# agentsite-static-version=794ae1a2-115e-47d8-8e1a-81615988f76d # upscaleaudio.com > AI-optimized mirror of upscaleaudio.com containing 245 pages totalling 195,198 words of clean markdown content, structured data, and semantic HTML. Original source: https://upscaleaudio.com. Last updated: 2026-10-26T09:24:02.143Z. Each page is available as HTML (with JSON-LD structured data) and Markdown (text-only, ideal for LLMs and RAG). ## Homepage - [Upscale Audio](/content/site-root.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (2,423 words) ## Articles & Blog Posts - [Tung-Sol 12AX7 / ECC803-S Gold Pin – Upscale Audio](/content/products/tung-sol-12ax7-ecc803-s-gold-pin/index.html): Price of NOS 12AX7s got you down? This new production Tung-Sol 12AX7 made in Russia is the answer! Very low noise and microphonics. (472 words) - [Gold Lion KT88 – Upscale Audio](/content/products/gold-lion-kt88/index.html): Gold Lion KT-88 Russian re-issue of the legendary Genalex KT88. These guys rock... They've been working great in all applications we've tried them in, and haven't had a single complaint. Read web forums and you'll see tons of praise for this tube. Sound is beautifully balanced... airy highs, gorgeous mids, deep dynamic (690 words) - [Electro-Harmonix KT88 – Upscale Audio](/content/products/electro-harmonix-kt88/index.html): They got this one right... reliable and rugged, with great clarity and pop. Not the warmest KT88 around, for that check out the Gold Lion re-issue or Shuguang KT88. (651 words) - [Cryogenically Treated Vacuum Tubes – Upscale Audio](/content/pages/cryogenically-treated-vacuum-tubes/index.html): CRYOGENICALLY TREATED VACUUM TUBES. DONE TO UPSCALE AUDIO STANDARDS! Most of you already know that Upscale Audio is the premier destination for expertise and availability of vacuum tubes for high-end audio equipment. So when we offer services and options, you can be guaranteed that it represents a significant investmen (564 words) - [Western Electric 300B Vacuum Tube – Upscale Audio](/content/products/western-electric-300b/index.html): The WE 300B is a piece of great audio history that's still utterly relevant because of its wonderful sound, but also now because of modern manufacturing that assures close tolerances and great consistency. (747 words) - [Sovtek 6H30Pi – Upscale Audio](/content/products/russian-6h30pi/index.html): There are two types currently being produced. The Sovtek brand which have the chrome pins (listed here), and the Electro Harmonix Gold pin. They are the same tube from the same factory. (657 words) - [Mullard New Production GZ34 / 5AR4 Rectifier – Upscale Audio](/content/products/mullard-new-production-gz34-5ar4-rectifier/index.html): Mullard GZ34 / 5AR4 - New production made in Russia. This tube is well-built, sounds great, and has been a great rectifier for folks looking to break free from the typicak Sovtek or Shuguang offerings. Please do not buy this thinking it's going to sound like a NOS Mullard... it won't. But... it's also a fraction of the (236 words) - [Gold Lion ECC83 / B759 / 12AX7 – Upscale Audio](/content/products/gold-lion-ecc83-b759/index.html): Gold Lion ECC83 / 12AX7 Let's face it... NOS 12AX7's are getting scarce. When that happens, the price goes up. The good news? The quality of current production 12AX7's is getting better and better. The latest Russian re-issue is a perfect example. These Gold Lion 12AX7 re-issues sound incredible: A full, glorious midra (515 words) - [Mullard 6BQ5 / EL84 New Production – Upscale Audio](/content/products/mullard-6bq5-el84-new-production/index.html): Mullard 6BQ5/EL-84 Made in Russia. New production re-issue from New Sensor. Gorgeous mids, punchy bass, these guys are sure to please even the most demanding boutique EL84 amp owner.Pricing above includes matching in any quantity you need at no extra charge. (207 words) - [Russian 6C33-B – Upscale Audio](/content/products/russian-6c33-b/index.html): Russian 6C33-B From Russia with love. Need some replacement power tubes for your BAT? We got 'em in stock ready to go. Made in the Ulyanov factory in Russia. Most amps that use this tube do not require matching, as it is somewhat difficult to match this tube, but we still put each tube through a rigorous screening proc (248 words) - [Tung-Sol KT150 – Upscale Audio](/content/products/tung-sol-kt-150/index.html): The overall sound of the KT150 is thunderously powerful. The bass is tight, full, and precise with a neutral midrange and transparent high end clarity. The dynamics are unlike anything we have ever heard before. (1,039 words) - [Test Equipment – Upscale Audio](/content/pages/test-equipment/index.html): A Look Inside the Upscale Audio Tube Testing Room Triplett Model 3444-A: Sometimes, new isn't always better. This is one of the best all-around tube testers ever built. I was able to find a couple in great shape, back before people figured out just how good they were. Now... EVERYBODY wants one, and they are demanding (653 words) - [Tung-Sol KT120 – Upscale Audio](/content/products/tung-sol-kt120/index.html): Super cool KT88 variant made by New Sensor in Russia. This tube is a drop-in replacement for KT88s... no special re-wiring required! (734 words) - [Grading & Matching – Upscale Audio](/content/pages/grading-matching/index.html): Small Signal Tubes In order to sell "selected" tubes, you have to have tubes to select from. If you check most websites, they only have 3-5 pieces of one tube in stock. If you are only picking from five tubes, the chance of you getting super bitchin' ones is not so great. Most small signal and preamp tubes you buy at U (898 words) - [Electro-Harmonix 6H30Pi Gold Pin – Upscale Audio](/content/products/russian-6h30pi-gold-pin/index.html): There are two types currently being produced. Don’t get your panties in a bunch over which is better, as the gold plating is laid over the chrome plating. They are both terrific. What is most important is how they test. (667 words) - [Tung-Sol 6L6GC-STR – Upscale Audio](/content/products/tung-sol-6l6gc-str/index.html): New production tube made by New Sensor in the Reflektor factory in Russia. Perfect drop-in replacement for any 6L6GC amplifier. (230 words) - [Gold Lion ECC82 / B749 / 12AU7 – Upscale Audio](/content/products/gold-lion-ecc82-b749/index.html): Gold Lion ECC82 / 12AU7 Incredible current production re-issue of the legendary Genalex. Very low noise and microphonics. These tubes have beautiful and dynamic midrange texture, airy highs, controlled, tight bass. Excellent resolution. These tubes tested extremely low in noise and microphonics across the board, so we (437 words) - [Accessibility Statement – Upscale Audio](/content/pages/accessibility-statement/index.html): Upscale Audio is committed to ensuring digital accessibility for people with disabilities. We are continually improving the user experience for everyone, and applying the relevant accessibility standards.Measures to support accessibilityUpscale Audio takes the following measures to ensure accessibility of Upscale Audio (586 words) - [Gold Lion 6V6GT / CV511 – Upscale Audio](/content/products/gold-lion-6v6gt-cv511/index.html): Gold Lion 6V6GT A modern re-creation of the legendary Genalex 6V6GT/CV511. Produced in Russia by New Sensor. Feedback from customers say this tube embodies the quintessential "6V6" sound with amazing tone and reliability. Pricing above is for a single tube. Includes matching in any quantity you need at no extra charge. (607 words) - [Mullard New Production CV4004 / 12AX7 – Upscale Audio](/content/products/mullard-new-production-cv4004-12ax7/index.html): Mullard CV4004 / 12AX7 - Price of NOS 12AX7s got you down? This new re-issue of the famous Mullard CV4004 made in Russia is the answer to your woes! This is a short plate version of New Sensor's excellent Mullard 12AX7. Very low noise and microphony make this tube an excellent candidate for many touchy preamps and phon (496 words) - [Used Specials – Upscale Audio](/content/collections/used-specials/index.html): Used Amplifiers - High-quality used amps, offering power and clarity at reduced prices. Brands we love: PrimaLuna, Pathos, Mark Levinson (575 words) - [Gold Lion ECC81 / B739 / 12AT7 – Upscale Audio](/content/products/gold-lion-12at7-b739/index.html): Gold Lion 12AT7 / B739 A fine tube made today in Russia. Gold pins. When we grade them for low noise and microphony they are really good. Very linear with a super top end and bass. But they cannot be compared to the real Mullard CV4024 made in Great Britain. Platinum grade - The best of the best. Lowest noise and micro (374 words) - [Electro-Harmonix 6SN7 – Upscale Audio](/content/products/electro-harmonix-6sn7/index.html): Current production tube made by New Sensor in Russia. Great tube. These tubes have been testing really low in noise and microphony, so if you have a preamp that is very sensitive, this may be the way to go. (349 words) - [Gold Lion KT66 – Upscale Audio](/content/products/gold-lion-kt66/index.html): Gold Lion KT66 Russian re-issue of the legendary Genalex. This one get's Uncle Kevvy's seal of approval. Built to the highest standards and is very reliable. Great substitite for the 6L6GC, but consult your amp's manufacturer: The KT66 has a higher dissippation than its 5881 and 6L6GC counterparts, and if your amp's bi (361 words) - [Mullard New Production 12AT7 / ECC81 – Upscale Audio](/content/products/mullard-new-production-12at7-ecc81/index.html): Mullard 12AT7 / ECC81 - Current production Russian re-issue. These tubes are quiet, they sound great, and are dependable... giving them Uncle Kevvy's seal of approval. A great choice for any 12AT7/ECC81 circuit. This tube tested extremely low in noise and microphonics across the board, so we do not have any Driver Grad (365 words) - [Gold Lion KT77 / EL34 – Upscale Audio](/content/products/gold-lion-kt77-el34/index.html): Gold Lion KT77 Notice: We supply the very finest KT77s, and our testing is the best, period. They are all burned in before testing and matching. These tubes are NOT as dependable as the Mullard EL34.   However, people really seem to like them....a lot. Our job is to tell you the facts.  Other dealers won't tell you the (730 words) - [Why We Don't Sell Certain Brands; and Our Tube Prices – Upscale Audio](/content/pages/why-we-dont-sell-certain-brands/index.html): People may think, that because we don’t sell certain brands or models, that we don’t have them available to us. Nothing could be further from the truth. In China, tube manufacturers have gotten hip to the fact that they are making some good stuff. They want to capitalize on that fact, but they can’t just triple their p (665 words) - [Mullard KT88 – Upscale Audio](/content/products/mullard-kt88/index.html): Mullard KT-88 Before buying any power tubes you need to know this: Upscale Audio pays more for our tubes than other companies. We pay the factory to pre-test for us, and give us the top 50% of production. Upscale Audio tubes will last longer; period. Nobody pays attention to your tube purchase like Uncle Kevvy. Incredi (654 words) - [Tung-Sol 12AU7W / 6189 – Upscale Audio](/content/products/tung-sol-12au7w-6189/index.html): From Russia with love. These current production tubes are quiet, they sound great, and are dependable... giving them Uncle Kevvy's seal of approval. (313 words) - [Mullard 12AX7 / ECC83 – Upscale Audio](/content/products/mullard-12ax7/index.html): Mullard 12AX7 / ECC83 Price of NOS 12AX7s got you down? This new re-issue of the famous Mullard 12AX7 made in Russia is the answer to your woes! Very low noise and microphony make this tube an excellent candidate for many touchy preamps and phonostage applications. Has a smoother midrange similar to NOS Mullards (thoug (489 words) - [Gold Lion N709 / EL84 New Production – Upscale Audio](/content/products/gold-lion-n709-el84-new-production/index.html): Genalex Gold Lion N709/EL-84 Made in Russia. New production re-issue from New Sensor. Gorgeous mids, punchy bass, these guys are sure to please even the most demanding boutique EL84 amp owner. If your amp is cathode bias, it will run these tubes too hard, causing them to fail prematurely! Use the early production Russi (242 words) - [Mullard New Production 12AU7 / ECC82 – Upscale Audio](/content/products/mullard-new-production-12au7-ecc82/index.html): Mullard 12AU7 / ECC82 - Current production Russian re-issue. These tubes are quiet, they sound great, and are dependable... giving them Uncle Kevvy's seal of approval. A great choice for any 12AU7/ECC82 circuit. This tube tested extremely low in noise and microphonics across the board, so we do not have any Driver Grad (365 words) - [Mullard EL34 – Upscale Audio](/content/products/mullard-el34/index.html): Mullard EL-34 A modern re-creation of the classic Mullard. Produced in Russia by New Sensor. We've been playing these in everything from the PrimaLuna amps to the Manley Classic 250s, and they sound great. Nice warmth, plenty of detail, but will retain a little more top end extension than the SED Winged C. Pricing abov (651 words) - [Tung-Sol EL34B – Upscale Audio](/content/products/tung-sol-el34b/index.html): New Sensor has been making some incredible tubes here lately, and this new re-issue is no exception. Nice warmth, plenty of detail, great bass. (621 words) - [Tung-Sol KT170 – Upscale Audio](/content/products/tung-sol-kt170/index.html): Tung-Sol KT170 Power Tube A high-dissipation octal beam tetrode with 85 W maximum plate dissipation, a 6.3 V heater, and the size and current capability required for serious high-output tube amplifiers The Tung-Sol KT170 is the biggest bottle in the modern Tung-Sol beam-tetrode family, built for amplifiers that need mo (661 words) - [One Whole Kilowatt of Bass – Upscale Audio](/content/blogs/newsletter/precisely-one-kilowatt-of-bass/index.html): A ground-up redesign of the No. 32; advances in material design and internal components warranted the No. 36. The best subwoofer shouldn't make you think about the subwoofer. There's a funny thing that happens when you hear a really great REL properly integrated into a high-end system. You don't necessarily just notice (775 words) - [Gold Lion U77 / 5AR4 New Production Rectifier – Upscale Audio](/content/products/gold-lion-u77-5ar4-new-production-rectifier/index.html): Gold Lion U77 / 5AR4 Note: This tube is not suited to PrimaLuna amps. New production made in Russia. This tube is well-built, smooth, refined, and balanced for the very best high-end audio sound. A great alternative to the typical OEM offerings. Please do not buy this thinking it's going to sound like a NOS Genalex U77 (250 words) - [Sovtek 5AR4 – Upscale Audio](/content/products/sovtek-5ar4/index.html): Current production made in Russia. Excellent and dependable tube. (181 words) - [Tung-Sol New Production 5AR4 Rectifier – Upscale Audio](/content/products/tung-sol-new-production-5ar4-rectifier/index.html): Tung-Sol 5AR4 New production made in Russia. This tube is well-built, sounds great, and has been a great rectifier for folks looking to break free from the typicak Sovtek or Shuguang offerings. Great performance and reliability. (205 words) - [Upscale Audio Data Privacy Notice](/content/pages/upscale-audio-data-privacy-notice/index.html): The California Consumer Privacy Act (“CCPA”) provides consumers with specific rights regarding their Personal Information. UPSCALE AUDIO DOES NOT SELL YOUR PERSONAL INFORMATION. What information does Upscale Audio Collect? We collect the information you give us directly at the time of purchase for the purposes of order (407 words) - [Tung-Sol 5881 – Upscale Audio](/content/products/tung-sol-5881/index.html): New production tube made by New Sensor in the Reflektor factory in Russia. Gotta 5881 amp and you're sick of using the same old Sovteks? Folks are really getting into this current production homage to the legendary Tung-Sol. (301 words) - [Electro-Harmonix KT90 – Upscale Audio](/content/products/electro-harmonix-kt90/index.html): A drop-in for any KT88 or 6550 tube. Sonically they are true to the Electo Harmonix brand; clear top end that is open but not bright or tizzy, tight bottom end, and a clear midrange that is not hard or clinical. (638 words) - [Vacuum Tube Warranty Information – Upscale Audio](/content/pages/vacuum-tube-warranty-information/index.html): Vacuum tubes are warrantied for 90 days from the date of shipment, against defects, except in cases of abuse, and replaced with like-item only. Only tubes sold to customers in the United States and Canada are covered by this warranty. We do not sale tubes to other countries and do not warranty orders placed through fre (534 words) - [Electro-Harmonix 300B Gold Grid – Upscale Audio](/content/products/electro-harmonix-300b/index.html): This is the default bitchin' tube that will not give you problems, sounds wonderful, and priced right. (220 words) - [Tube Basics and Frequently Asked Questions – Upscale Audio](/content/pages/tube-basics-and-frequently-asked-questions/index.html): I have a brand new tube that's noisy. When I put my old tubes back they worked fine. This tube is defective. Okay... I know this one's not really a "question" but we get it so often that it needs to be addressed anyway. Many times when a piece of tubed equipment is noisy, the cause is a bad connection between a tube an (2,392 words) - [Hana E Series MC Phono Cartridges – Upscale Audio](/content/products/hana-e-series-mc-phono-cartridges/index.html): The best way to upgrade from “starter” cartridges that typically come packaged with turntables. (319 words) - [HV Stands for High Voltage – Upscale Audio](/content/blogs/newsletter/hv-stands-for-high-voltage/index.html): T+A's HV Series represents the pinnacle of solid-state performance. Shown here, the A 3100 HV power amp. "Any music lover would be blessed to have this amplifier in their system." Power amps are often thought of as the heavy muscle in a system, but that overlooks the fact that they also need to be keen, highly attuned (813 words) - [Tung-Sol 6SN7GTB – Upscale Audio](/content/products/tung-sol-6sn7gtb/index.html): Re-issue, made by New Sensor in Russia. These tubes sound great, they stay quiet and have been solid and reliable. Great detail and depth. (347 words) - [Sovtek 5881 – Upscale Audio](/content/products/sovtek-5881/index.html): Sovtek 5881 The workhorse of the 5881 family. This is most commonly used 5881 on the market today. If you have a 5881-based amplifier, chances are this was the tube that came stock. It has solid, military-spec build quality, which makes it very sturdy and dependable. If you just want a tube that is just plain going to (323 words) - [VPI Super Prime Scout 26 Turntable - New Carbon Fiber Hybrid Tonearm & – Upscale Audio](/content/products/vpi-super-prime-scout-26-turntable-w-10-5-carbon-wrap-tonearm-vta-on-the-fly.html): VPI Super Prime Scout 26 Limited Edition   Fantastic cartridge bundles with huge savings. Contact our analog specialists.  The Super Prime Scout 21 is an amazing turntable, but we wanted to do better.  The 2026 model is a VPI Best Buy, and only available at Upscale Audio! Historically, a VPI table in the mid-$3k price (654 words) - [Headphones & Amplifiers – Upscale Audio](/content/collections/personal-audio/index.html): Premium headphones, and headphone amplifiers for immersive, detailed listening experiences. Brands we love: Grado, Meze Audio, Dan Clark Audio (2,881 words) - [PrimaLuna EVO 300 Tube Integrated Amp (OPEN) – Upscale Audio](/content/products/primaluna-evo-300-tube-integrated-amp-open-stock/index.html): PrimaLuna EVO 300 Tube Integrated Amp (OPEN) Specifications Power (Ultralinear, 8 Ω, 1% THD): 42 W x 2 (EL34) Power (Triode, 8 Ω, 1% THD): 24 W x 2 (EL34) Inputs: Stereo RCA x 5, Stereo RCA HT bypass Outputs4 and 8 Ω multi-connector speaker outputsRCA stereo / mono subwooferStereo RCA tape out1/4" Headphone Frequency R (470 words) - [Digital – Upscale Audio](/content/collections/digital/index.html): Digital - High-resolution digital solutions for breathtaking audio clarity. Brands we love: Aurender, Chord Electronics, HiFi Rose (2,712 words) - [Home Theater – Upscale Audio](/content/collections/home-theater/index.html): Home Theater - High-quality systems for surround sound and cinema-like experiences. Brands we love: GoldenEar, Elac, PSB (4,099 words) - [Cables – Upscale Audio](/content/collections/cables/index.html): Cables - Superior cables designed for optimal signal transfer and noise reduction. Brands we love: Kimber, Nordost, Cardas (5,518 words) - [Used Equipment FAQ – Upscale Audio](/content/pages/used-equipment/index.html): We get tons of calls and emails regarding the used equipment listed on our website. Many of these questions have the same answer, so please read over the FAQ below before calling or emailing us. This will save us time, and you don't have to wait for us to call you back or reply to your email. Sometimes we get backed up (1,034 words) - [Loudspeakers – Upscale Audio](/content/collections/loudspeakers/index.html): Loudspeakers - Transform your listening space with high-fidelity loudspeakers, from retro classics to ultra-modern designs. Brands we love: Focal, Fyne Audio, Klipsch, Spendor (5,504 words) - [Turntables & Analog – Upscale Audio](/content/collections/turntables-analog/index.html): Turntables and Analog Audio - Dive into the world of vinyl with custom-built turntables, cartridges, and phono stages. Brands we love: Clearaudio, Rega, Technics (5,508 words) - [Stereo Amplifiers – Upscale Audio](/content/collections/amplifiers/index.html): Amplifiers - Our favorite amps, including Integrated Amplifiers, Preamplifiers, Power Amplifiers, and Surround Sound & Multichannel models, deliver pristine, powerful sound for an audiophile experience that transforms your listening space. Brands we love: PrimaLuna, Mark Levinson, Pathos, Anthem, Devialet, Musical Fidelity, Cambridge Audio, Naim Audio, Western Electric, Balanced Audio Technology, Parasound, Pro-Ject (5,640 words) - [Vacuum Tubes – Upscale Audio](/content/collections/vacuum-tubes/index.html): Vacuum Tubes - Do you love the warm sound of tube amps? Upscale Audio is the world's premiere source for power tubes, preamp tubes, and rectifier tubes for tube amplifiers and tube-hybrid amplifiers. These tubes amplify sound signals with a warm and rich quality. Brands we love: PrimaLuna, Gold Lion, Mullard, Tung-Sol, GE, Telefunken, Electro-Harmonix, Sovtek, Brimar, Western Electric (1,097 words) - [Wharfedale Linton Heritage Bookshelf Loudspeaker (pair) – Upscale Audio](/content/products/wharfdale-linton-bookshelf-loudspeaker-pair/index.html): The original LINTON was well known for its warm, rich and natural sounding character and the new Wharfedale LINTON retains that standing but imbues it with an open, detailed performance that will entice you to explore your whole music collection, once more. (729 words) - [Contact Us – Upscale Audio](/content/pages/contact-us/index.html): Give Us A Call (909) 931-9686 Chat/Message Us Click the red chat circle on the lower right hand corner of the screen to chat or leave us a message. We'll ask a few quick questions and get you to the right team. Thanks! (178 words) - [Sbooster BOTW P&P ECO MKII Power Supply (OPEN) – Upscale Audio](/content/products/sbooster-botw-p-p-eco-mkii-power-supply-open/index.html): Sbooster BOTW P&P ECO MKII High-Quality Power Supply Upgrade “As for the Sbooster's contribution to Ethernet music… WOW!… This is no joke. The Sbooster made almost as much difference as the EtherStream switch itself. There is so much more heft it isn't even funny. It introduced a massive amount of flesh and body, a (1,539 words) - [Tannoy Definition Subwoofer (OPEN) – Upscale Audio](/content/products/tannoy-definition-subwoofer/index.html): Powered by a 1,000 Watt class-D amplifier, the two 12" long-throw aluminum cone drive units provide exceptional low-frequency performance. (520 words) - [Western Electric – Upscale Audio](/content/collections/western-electric/index.html): Western Electric - High-quality tube amplifiers with a classic American heritage.  Integrated Amplifiers (Tube), Power Tubes (246 words) - [VPI – Upscale Audio](/content/collections/vpi/index.html): VPI - Precision turntables designed for audiophile vinyl listening. Record Clamps & Weights, Record Cleaning Machines, Record Cleaning Supplies,Tonearm Cables,Tonearms,Turntable Drive Systems,Turntable Isolation,Turntable Replacement Parts,Turntable Tools,Turntable (759 words) - [Tri-Planar – Upscale Audio](/content/collections/tri-planar/index.html): Tri-Planar - High-performance tonearms for precise vinyl playback. (205 words) - [Vincent – Upscale Audio](/content/collections/vincent/index.html): Vincent - Hybrid amplifiers that combine tube warmth with solid-state power.  Integrated Amplifier, Integrated Amplifiers (Hybrid), Integrated Amplifiers (Solid State), Phonostages, Power Amplifiers (Hybrid), Power Amplifiers (Solid State), Preamplifiers (331 words) - [Outlet – Upscale Audio](/content/collections/outlet/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (3,815 words) - [Accessories – Upscale Audio](/content/collections/accessories/index.html): Accessories - Enhance your setup with accessories that optimize audio performance. Brands we love: PS Audio, IsoAcoustics, Pangea Audio (3,653 words) - [PrimaLuna EVO 400 Tube Poweramp (OPEN) – Upscale Audio](/content/products/primaluna-evo-400-tube-poweramp-open/index.html): PrimaLuna EVO 400 Tube Poweramp (OPEN) Specifications Power (Stereo Ultralinear, 8 Ω, 1% THD): 70 W x 2 (EL34)Power (Stereo Triode, 8 Ω, 1% THD): 38 W x 2 (EL34)Power (Mono Ultralinear, 8 Ω, 1% THD): 140 W (EL34)Power (Mono Triode, 8 Ω, 1% THD): 82 W (EL34) Inputs: Stereo RCA x 1, Stereo XLR x 1 Outputs4, 8, and 16 Ω m (2,041 words) - [Zesto Audio – Upscale Audio](/content/collections/zesto-audio/index.html): Zesto Audio - Hand-built tube amplifiers and phono stages with meticulous craftsmanship. Phonostages, Power Amplifiers (Tube), Preamplifiers (Tube) (356 words) - [Electro-Harmonix 6922 Gold Pin – Upscale Audio](/content/products/electro-harmonix-6922-gold-pin/index.html): This is the gold pin version of the 6H23 Type 2. Like the Type 2s, they are slightly relaxed... just a smidge warmer than the Type 3. If you have a Sonic Frontiers or ARC they will help you have a more palpable midrange. (383 words) - [Bread Financing – Upscale Audio](/content/pages/financing-bread/index.html): Available financing programs at Upscale Audio. (357 words) - [Technics – Upscale Audio](/content/collections/technics/index.html): Technics - Iconic turntables and high-end audio equipment with precision engineering.  Bookshelf Loudspeakers, Disc Players, Floorstanding Loudspeakers, Integrated Amplifiers (Solid State), Powered Loudspeakers, Turntables (586 words) - [T+A Elektroakustik – Upscale Audio](/content/collections/t-a-elektroakustik/index.html): T+A Elektroakustik - High-end amplifiers and speakers with pristine clarity.  Bookshelf Loudspeakers, DAC / Streamer, Disc Players, Floorstanding Loudspeakers, Headphone Amplifiers, Headphones, Integrated Amplifiers (Solid State), Power Amplifiers (Hybrid), Power Amplifiers (Solid State), Power Supply, Preamplifiers (Solid State), Speaker Stands, Turntables (925 words) - [Tannoy – Upscale Audio](/content/collections/tannoy/index.html): Tannoy - High-fidelity loudspeakers with rich, natural sound.  Bookshelf Loudspeakers,Center Channel & Surround,Floorstanding Loudspeakers,In-Wall Loudspeakers, Loudspeakers (420 words) - [Sutherland – Upscale Audio](/content/collections/sutherland/index.html): Sutherland - Audiophile phono preamps with outstanding transparency.  Phonostages (381 words) - [Sovtek 6550WE – Upscale Audio](/content/products/sovtek-6550we/index.html): Sovtek 6550WE - From Russia with love. If you have an Audio Research amp, this is the tube you want. These tubes are very rugged, reliable, and sound great. They have a little bump in the midrange, tight bass, good top end extension. Pricing above is for a single tube. Includes matching in any quantity you need at no e (614 words) - [SPL – Upscale Audio](/content/collections/spl/index.html): SPL - Professional-grade audio equipment for high-fidelity home and studio use.  Headphone Amplifiers (177 words) - [Spendor – Upscale Audio](/content/collections/spendor/index.html): Spendor - Loudspeakers with natural, well-balanced sound.  Bookshelf Loudspeakers, Center Channel & Surround, Floorstanding Loudspeakers, Speaker Stands (555 words) - [SUPATRAC – Upscale Audio](/content/collections/supatrac/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (187 words) - [Vicoustic – Upscale Audio](/content/collections/vicoustic/index.html): Vicoustic - Acoustic treatment products enhancing room sound quality. (223 words) - [Soundsmith – Upscale Audio](/content/collections/soundsmith/index.html): Soundsmith - High-performance phono cartridges and preamps with innovative tech. (584 words) - [Sonus faber – Upscale Audio](/content/collections/sonus-faber/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (629 words) - [Solid Tech – Upscale Audio](/content/collections/solid-tech/index.html): Solid Tech - Vibration-damping audio racks and stands from Sweden. (180 words) - [Welcome, McIntosh Labs! – Upscale Audio](/content/blogs/newsletter/welcome-mcintosh-labs/index.html): The MA2375 is a 75 W, KT88 integrated amp with 12AT7 driver tubes. The preamp uses 12AX7A and 12AT7 tubes. This American brand's cultural identity is as important as its engineering pedigree. "Welcome to the Garden of Eden" goes the first line of Jack White's crunchy, bouncy opener to his latest album, Frozen Charlotte (608 words) - [Newsletter – Upscale Audio](/content/blogs/newsletter/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (465 words) - [It's Time for Rebellion – Upscale Audio](/content/blogs/newsletter/its-time-for-rebellion/index.html): It's not often that we see a new Heritage Series speaker; here the Rebellion in the American Walnut finish. "This speaker sounds just glorious on top." Kevin Deal is always really excited when Klipsch releases a new speaker or model in its Heritage Series. It's not because he's a retrogrouch, but because he understands (504 words) - [Product Status Guide, e.g. "Open" – Upscale Audio](/content/pages/product-status-guide/index.html): Upscale carefully categorizes all products so you know exactly what you're buying. (502 words) - [Solidsteel – Upscale Audio](/content/collections/solidsteel/index.html): Solidsteel - Audio racks and stands with an elegant, minimalist design. (638 words) - [Upscale Audio Rewards](/content/pages/upscale-audio-rewards/index.html): Who Doesn't Like Receiving HiFives? Join Upscale Audio’s Rewards Program and keep coming back for more of the world’s best audio gear.   Once you sign up, you will earn HiFives for every dollar you spend (no exclusions!), and can use your riches to buy any product. HiFives never expire, and can be used even for discoun (729 words) - [Sumiko – Upscale Audio](/content/collections/sumiko/index.html): Sumiko - Phono cartridges with rich, dynamic sound. (469 words) - [Sennheiser – Upscale Audio](/content/collections/sennheiser/index.html): Sennheiser - Premium headphones and audio gear with durability.  Headphones, Loudspeakers (280 words) - [Schick – Upscale Audio](/content/collections/schick/index.html): Schick - High-quality tonearms for analog audio setups. (195 words) - [Sbooster – Upscale Audio](/content/collections/sbooster/index.html): Sbooster - Linear power supplies that enhance audio component performance. (289 words) - [Salamander – Upscale Audio](/content/collections/salamander/index.html): Salamander - Audio furniture and racks with both function and style. (221 words) - [Revel – Upscale Audio](/content/collections/revel/index.html): Revel - Precision-engineered speakers for accurate sound.  Bookshelf Loudspeaker, Center Channel & Surround, Floorstanding Loudspeakers, Speaker Stands, Subwoofers (253 words) - [REL Acoustics – Upscale Audio](/content/collections/rel/index.html): REL Acoustics - Subwoofers that add deep, clean bass to high-end systems.  Accessories, Cables, Subwoofers (1,004 words) - [Rega – Upscale Audio](/content/collections/rega/index.html): Rega - High-quality turntables and phono preamps from the UK.  Cartridges, Disc Players, Integrated Amplifiers (Solid State, Interconnects, Phonostages,Tonearms,Turntable Power Supplies,Turntable Replacement Parts,Turntable Tools,Turntables (1,079 words) - [Reed – Upscale Audio](/content/collections/reed/index.html): Reed - High-end tonearms with customizable features for audiophile turntables. (261 words) - [Record Doctor – Upscale Audio](/content/collections/record-doctor/index.html): Record Doctor - Vinyl record cleaning machines for optimal playback quality.  Record Clamps & Weights, Record Cleaning Machines. Record Cleaning Supplies (284 words) - [RAAL – Upscale Audio](/content/collections/raal/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (201 words) - [Pro-Ject – Upscale Audio](/content/collections/pro-ject/index.html): Pro-Ject - Affordable, high-quality turntables and audio accessories.  DACs, Disc Players, Phonostages, Power Amplifiers (Solid State), Preamplifiers (Solid State), Record Cleaning Machines, Streamers,Turntables (935 words) - [Quad – Upscale Audio](/content/collections/quad/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (321 words) - [PSI Audio – Upscale Audio](/content/collections/psi-audio/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (176 words) - [Pure Fidelity – Upscale Audio](/content/collections/pure-fidelity/index.html): Pure Fidelity - Turntables emphasizing detail and vinyl quality. (214 words) - [PrimaLuna – Upscale Audio](/content/collections/primaluna/index.html): PrimaLuna - Reliable tube amplifiers with warm, natural sound.  Accessories, DACs,Integrated Amplifiers (Hybrid), Integrated Amplifiers (Tube), Phonostages. Power Amplifiers, Power Amplifiers, Power Amplifiers, Power Tubes, Preamp Tubes, Preamplifiers, Rectifier Tubes (769 words) - [Phasemation – Upscale Audio](/content/collections/phasemation/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (550 words) - [Polk Audio – Upscale Audio](/content/collections/polk-audio/index.html): Polk Audio - Affordable speakers with solid performance and easy setup. (229 words) - [Pathos – Upscale Audio](/content/collections/pathos/index.html): Pathos - Combines tube and solid-state tech for refined, high-end audio. (707 words) - [Parasound – Upscale Audio](/content/collections/parasound/index.html): Parasound - Amplifiers and preamps delivering professional-grade audio quality. (385 words) - [Pangea Audio – Upscale Audio](/content/collections/pangea-audio/index.html): Pangea Audio - Affordable cables, racks, and accessories for home audio. (416 words) - [Ortofon – Upscale Audio](/content/collections/ortofon/index.html): Ortofon - Phono cartridges known for precise, detailed vinyl sound. (889 words) - [Nordost – Upscale Audio](/content/collections/nordost/index.html): Nordost - High-performance cables enhancing detail and clarity in audio systems. (2,373 words) - [Onkyo – Upscale Audio](/content/collections/onkyo/index.html): Onkyo - Affordable AV receivers with robust, dynamic sound. (279 words) - [Nagaoka – Upscale Audio](/content/collections/nagaoka/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (295 words) - [My Sonic Lab – Upscale Audio](/content/collections/my-sonic-lab/index.html): My Sonic Lab - High-end phono cartridges with dynamic and detailed analog sound. (361 words) - [NAD – Upscale Audio](/content/collections/nad/index.html): NAD - Affordable hi-fi gear with quality sound and minimalist design. (929 words) - [Music Hall – Upscale Audio](/content/collections/music-hall/index.html): Music Hall - Turntables and audio accessories designed for vinyl playback quality. (436 words) - [Musical Fidelity – Upscale Audio](/content/collections/musical-fidelity/index.html): Musical Fidelity - Amplifiers and DACs with smooth, powerful sound. (950 words) - [MoFi Electronics – Upscale Audio](/content/collections/mofi-electronics/index.html): MoFi Electronics - Turntables and vinyl accessories inspired by Mobile Fidelity's legacy. (852 words) - [Monitor Audio – Upscale Audio](/content/collections/monitor-audio/index.html): Monitor Audio - Quality speakers featuring advanced metal driver technology. (1,247 words) - [Mission Audio – Upscale Audio](/content/collections/mission-audio/index.html): Mission Audio - Affordable, high-quality sound with British engineering. (196 words) - [Meze Audio – Upscale Audio](/content/collections/meze-audio/index.html): Meze Audio - Beautifully designed headphones delivering detailed, natural sound. (464 words) - [McIntosh Labs – Upscale Audio](/content/collections/mcintosh-labs/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (845 words) - [Mark Levinson – Upscale Audio](/content/collections/mark-levinson/index.html): Mark Levinson - Ultra-high-end amplifiers and preamps with pristine sound. (410 words) - [Marantz – Upscale Audio](/content/collections/marantz/index.html): Marantz - High-performance AV receivers and hi-fi components with warm, rich sound. (955 words) - [Manley Laboratories – Upscale Audio](/content/collections/manley-laboratories/index.html): Manley Laboratories - Tube amplifiers and processors with studio-level sound quality. (358 words) - [Lyra – Upscale Audio](/content/collections/lyra/index.html): Lyra - Premium moving coil phono cartridges with refined, dynamic sound. (305 words) - [Luxsin – Upscale Audio](/content/collections/luxsin/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (175 words) - [Lumin – Upscale Audio](/content/collections/lumin/index.html): Lumin - Digital music players offering high-res streaming with precise clarity. (539 words) - [Lehmann Audio – Upscale Audio](/content/collections/lehmann-audio/index.html): Lehmann Audio - High-quality headphone amplifiers and phono stages from Germany. (300 words) - [Koetsu – Upscale Audio](/content/collections/koetsu/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (353 words) - [Kuzma – Upscale Audio](/content/collections/kuzma/index.html): Kuzma - Precision turntables and tonearms for exceptional vinyl playback. (315 words) - [Klipsch – Upscale Audio](/content/collections/klipsch/index.html): Klipsch - High-efficiency horn-loaded speakers with dynamic sound. (592 words) - [KLH – Upscale Audio](/content/collections/klh/index.html): KLH - Affordable, high-performance speakers and headphones with American roots. (255 words) - [Kirmuss Audio – Upscale Audio](/content/collections/kirmuss-audio/index.html): Kirmuss Audio - Ultrasonic vinyl record cleaners enhancing record fidelity. (417 words) - [Kimber – Upscale Audio](/content/collections/kimber/index.html): Kimber - High-quality audio cables designed for clear, dynamic sound. (453 words) - [JL Audio – Upscale Audio](/content/collections/jl-audio/index.html): JL Audio - High-performance subwoofers and amplifiers with deep, accurate bass. (176 words) - [JBL – Upscale Audio](/content/collections/jbl/index.html): JBL - Powerful speakers for home and professional sound systems. (430 words) - [IsoTek – Upscale Audio](/content/collections/isotek/index.html): IsoTek - Power conditioners designed to reduce noise and improve audio clarity. (469 words) - [IsoAcoustics – Upscale Audio](/content/collections/isoacoustics/index.html): IsoAcoustics - Isolation stands that improve clarity and soundstage in audio setups. (762 words) - [IntegrityHiFi – Upscale Audio](/content/collections/integrityhifi/index.html): IntegrityHiFi - Turntable accessories like Tru-Lift for enhanced vinyl playback. (215 words) - [Integra – Upscale Audio](/content/collections/integra/index.html): Integra - Premium AV receivers and processors for immersive home theater experiences. (239 words) - [HiFi Rose – Upscale Audio](/content/collections/hifi-rose/index.html): HiFi Rose - Innovative audio streamers featuring high-res displays and advanced functionality. (516 words) - [HiFiMAN – Upscale Audio](/content/collections/hifiman/index.html): HiFiMAN - High-end headphones and portable audio with planar magnetic technology. (337 words) - [Grimm Audio – Upscale Audio](/content/collections/grimm-audio/index.html): Grimm Audio - Studio-grade DACs and audio interfaces with audiophile appeal. (250 words) - [Hana – Upscale Audio](/content/collections/hana/index.html): Hana - High-quality phono cartridges with smooth, natural sound. (339 words) - [GoldenEar – Upscale Audio](/content/collections/goldenear/index.html): GoldenEar - Unique driver technology in high-performance speakers for immersive sound. (773 words) - [Grado – Upscale Audio](/content/collections/grado/index.html): Grado - Handcrafted headphones and phono cartridges with high-fidelity sound. (689 words) - [Fyne Audio – Upscale Audio](/content/collections/fyne-audio/index.html): Fyne Audio - Loudspeakers with detailed sound and innovative BassTrax technology. (1,397 words) - [Focal – Upscale Audio](/content/collections/focal/index.html): Focal - High-end speakers and headphones with remarkable clarity and dynamics. (1,839 words) - [Finite Elemente – Upscale Audio](/content/collections/finite-elemente/index.html): Finite Elemente - Audio racks and isolation systems for optimized sound performance. (371 words) - [Final Audio – Upscale Audio](/content/collections/final-audio/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (311 words) - [Ferrum – Upscale Audio](/content/collections/ferrum/index.html): Ferrum - DACs and amplifiers with a minimalist, precision-engineered design. (287 words) - [Feliks Audio – Upscale Audio](/content/collections/feliks-audio/index.html): Feliks Audio - Handcrafted tube amplifiers offering warm, detailed sound. (349 words) - [Eversolo – Upscale Audio](/content/collections/eversolo/index.html): Eversolo - Quality DACs and audio streamers for seamless high-res digital playback. (413 words) - [English Electric – Upscale Audio](/content/collections/english-electric/index.html): English Electric - Network switches optimized for audiophile audio systems. (174 words) - [ELAC – Upscale Audio](/content/collections/elac/index.html): ELAC - High-performance speakers known for quality and affordability. (225 words) - [EBI Audio – Upscale Audio](/content/collections/ebi-audio/index.html): EBI Audio - High-fidelity audio components focused on acoustic transparency. (172 words) - [EAT – Upscale Audio](/content/collections/eat/index.html): EAT - European-made premium turntables and phono equipment with elegant design. (354 words) - [EarMen – Upscale Audio](/content/collections/earmen/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (181 words) - [Dynavector – Upscale Audio](/content/collections/dynavector/index.html): Dynavector - Japanese moving coil phono cartridges for vibrant analog sound. (281 words) - [DS Audio – Upscale Audio](/content/collections/ds-audio/index.html): DS Audio - Optical cartridge technology for unmatched vinyl clarity and detail. (274 words) - [Dr. Feickert Analogue – Upscale Audio](/content/collections/dr-feickert-analogue/index.html): Dr. Feickert Analogue - Precision turntables crafted for audiophile vinyl playback. (349 words) - [DH Labs – Upscale Audio](/content/collections/dh-labs/index.html): DH Labs - High-performance audio cables engineered for signal purity and clarity. (702 words) - [Devialet – Upscale Audio](/content/collections/devialet/index.html): Devialet - Innovative, powerful wireless speakers with sleek, futuristic designs. (390 words) - [Denon – Upscale Audio](/content/collections/denon/index.html): Denon - Wide selection of AV receivers and headphones with immersive sound experiences. (379 words) - [Dan Clark Audio – Upscale Audio](/content/collections/dan-clark-audio/index.html): Dan Clark Audio - Award-winning headphones that combine comfort with superior sound. (251 words) - [Clearaudio – Upscale Audio](/content/collections/clearaudio/index.html): Clearaudio - German precision turntables and analog audio equipment. (1,048 words) - [Chord – Upscale Audio](/content/collections/chord/index.html): Chord - High-end DACs and amplifiers for outstanding sound performance. (640 words) - [Cardas – Upscale Audio](/content/collections/cardas/index.html): Cardas - High-quality cables designed to enhance detail and clarity in audio systems. (1,407 words) - [Cambridge Audio – Upscale Audio](/content/collections/cambridge-audio/index.html): Cambridge Audio - Affordable, high-quality hi-fi components with a legacy of British engineering. (627 words) - [Campfire Audio – Upscale Audio](/content/collections/campfire-audio/index.html): Campfire Audio - Premium in-ear monitors and headphones known for exceptional clarity. (539 words) - [Bluesound – Upscale Audio](/content/collections/bluesound/index.html): Bluesound - Multi-room streaming systems offering high-resolution wireless audio. (420 words) - [Bob's Devices – Upscale Audio](/content/collections/bobs-devices/index.html): Bob's Devices - Crafts high-quality step-up transformers for superior phono setups. (266 words) - [Berkeley Audio Design – Upscale Audio](/content/collections/berkeley-audio-design/index.html): Berkely Audio Design - Precision DACs and digital products for detailed audiophile listening. (301 words) - [Bassocontinuo – Upscale Audio](/content/collections/bassocontinuo/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (353 words) - [Balanced Audio Technology – Upscale Audio](/content/collections/balanced-audio-technology/index.html): Balanced Audio Technology makes ultra-high-end vacuum-tube audio with a range of pre and power amps, DACs, and phonostages. (280 words) - [Austrian Audio – Upscale Audio](/content/collections/austrian-audio/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (198 words) - [Auris – Upscale Audio](/content/collections/auris/index.html): Auris - Combines tube amplification for headphone amplifiers and design for refined, natural sound in audio setups. (401 words) - [Aurender – Upscale Audio](/content/collections/aurender/index.html): Upscale Audio is an Aurender Premier Dealer - You're guaranteed to get the best price and full warranty coverage when purchasing Arender streamers and music servers through Upscale Audio.- High-end music servers and streamers for pristine high-resolution digital playback. DAC / Streamer, DAC / Streamer / Music Server, Master Clocks, Streamer / Music Server (638 words) - [Frequently Asked Questions – Upscale Audio](/content/pages/frequent-questions/index.html): Tube Basics & Tube FAQ A Product Has (OPEN) In the Title. What Does That Mean? Basic Troubleshooting Checklist Troubleshooting Tubed Components Packing Your Gear for Transport I changed a component and the hiss/noise went up... what happened?? I have some questions about your used equipment... (209 words) - [AURALiC – Upscale Audio](/content/collections/auralic/index.html): AURALiC - High-res streaming products designed for audiophile-grade wireless audio. (291 words) - [Audio Research – Upscale Audio](/content/collections/audio-research/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (457 words) - [Audeze – Upscale Audio](/content/collections/audeze/index.html): Audeze - High-end headphones featuring planar magnetic technology for unmatched precision. (319 words) - [AudioQuest – Upscale Audio](/content/collections/audioquest/index.html): AudioQuest - Produces high-quality cables and accessories for better connectivity and sound fidelity. Audio Cables, Accessories, Power Cables (2,756 words) - [Audio-Technica – Upscale Audio](/content/collections/audio-technica/index.html): Audio-Technica - Offers turntables and headphones with reliable performance across all price ranges. (703 words) - [Arcam – Upscale Audio](/content/collections/arcam/index.html): Arcam - British-made amps, AV receivers, and streamers deliver exceptional audio quality. (487 words) - [Audio Desk – Upscale Audio](/content/collections/audio-desk/index.html): Audio Desk - Innovates with ultrasonic record cleaners for pristine vinyl sound. (202 words) - [Anthem – Upscale Audio](/content/collections/anthem/index.html): Abyss - Renowned for premium planar magnetic headphones that deliver detailed and immersive audio. (457 words) - [Upscale Audio](/content/community/wishlist/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (177 words) - [Acoustic Grove System – Upscale Audio](/content/collections/acoustic-grove-system/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (257 words) - [Abyss – Upscale Audio](/content/collections/abyss/index.html): Abyss - Renowned for premium planar magnetic headphones that deliver detailed and immersive audio. (275 words) - [Books – Upscale Audio](/content/collections/books/index.html): Books - Insightful reads on the art of listening and high-end audio gear. Brands we love: Gideon Schwartz (247 words) - [T-Shirts – Upscale Audio](/content/collections/t-shirts/index.html): T-Shirts - HiFi-themed apparel for true audio enthusiasts. Show your love for PrimaLuna, Tannoy, or Upscale Audio! (198 words) - [Sound Dampening – Upscale Audio](/content/collections/sound-dampening/index.html): Sound Dampening - Acoustic treatments for better room acoustics and precise audio. Brands we love: Vicoustic (352 words) - [Vibration Control – Upscale Audio](/content/collections/vibration-control/index.html): Vibration Control - Minimize vibrations for a cleaner, clearer sound. Brands we love: Nordost, IsoAcoustics, MoFi Electronics (372 words) - [Racks & Stands – Upscale Audio](/content/collections/racks-stands/index.html): Racks & Stands - Elegant and functional racks that reduce vibration and look great. Brands we love: Salamander, Fyne Audio, Solid Tech (1,957 words) - [Speaker Stands – Upscale Audio](/content/collections/speaker-stands/index.html): Speaker Stands - Designed to elevate speakers for better sound and stability. Brands we love: Wharfedale, Devialet, solidsteel (966 words) - [Power Conditioners/Strips – Upscale Audio](/content/collections/power-conditioners/index.html): Power Conditioners/Strips - Clean, stabilize, and protect your audio gear. Brands we love: Naim Audio, PS Audio, IsoTek (1,079 words) - [Multichannel Amplifiers – Upscale Audio](/content/collections/surround-sound-multichannel/index.html): Surround Sound & Multichannel - Designed for home theater systems, these amps create immersive 3D soundscapes by distributing audio across multiple speakers, delivering a true cinematic experience. Brands we love: Arcam, Denon, Integra, Marantz, Onkyo, Paradigm (1,359 words) - [Ethernet Cables – Upscale Audio](/content/collections/ethernet-cables/index.html): Ethernet Cables - High-speed cables for stable, jitter-free streaming. Brands we love: DH Labs, Chord Company, AudioQuest (336 words) - [HDMI Cables – Upscale Audio](/content/collections/hdmi-cables/index.html): HDMI Cables - For high-definition sound and video, with lossless transfer. Brands we love: DH Labs, Nordost, AudioQuest (664 words) - [Tonearm Cables – Upscale Audio](/content/collections/tonearm-cables/index.html): Tonearm Cables - Precise cables for connecting tonearms to phono stages, reducing interference. Brands we love: VPI, Pangea Audio, Kimber (498 words) - [Power Cables – Upscale Audio](/content/collections/power-cords/index.html): Power Cables - Ensure stable and clean power delivery to your gear. Brands we love: IsoTek, Naim Audio, Nordost (1,358 words) - [USB Cables – Upscale Audio](/content/collections/usb-cables/index.html): USB Cables - Minimize data loss with high-performance USB cables. Brands we love: Sbooster, Cardas, AudioQuest (494 words) - [Interconnects – Upscale Audio](/content/collections/interconnects/index.html): Interconnects - High-quality cables for linking audio components with zero signal loss. Brands we love: Acoustic Zen, Nordost, Bob’s Devices (1,415 words) - [Speaker Cables – Upscale Audio](/content/collections/speaker-cables/index.html): Speaker Cables - Audiophile-grade cables that connect your speakers with precision. Brands we love: DH Labs, Nordost, AudioQuest (1,663 words) - [Headphone Cables – Upscale Audio](/content/collections/headphone-cables/index.html): Headphone Cables - Upgrade your headphones with better sound and durability. Brands we love: Cardas, Nordost (300 words) - [Digital Audio Players – Upscale Audio](/content/collections/digital-audio-players/index.html): Digital Audio Players - Portable players for high-res audio on the go. Brands we love: Pro-Ject (215 words) - [Headphone Amplifiers – Upscale Audio](/content/collections/headphone-amplifiers/index.html): Headphone Amplifiers - Dedicated amps that bring your headphones to life with clarity and power. Brands we love: SPL, Feliks Audio, Chord Electronics (994 words) - [Headphones – Upscale Audio](/content/collections/headphones/index.html): Headphones - Audiophile-grade headphones perfect for critical listening. Brands we love: Sennheiser, Bowers & Wilkins, Auris (2,120 words) - [Gift Card – Upscale Audio](/content/products/gift-card/index.html): Upscale Audio Gift Certificates   Are you difficult to shop for? Do people actually like you? If yes on both questions, the Upscale Audio Gift Certificate is your solution to holiday success. Ask the significant other of any audio nerd if gift giving is easy. "No way," they'll say. "Just last year I bought him the X300 (478 words) - [Disc Players – Upscale Audio](/content/collections/disc-players/index.html): Disc Players - Play CDs and SACDs with high-fidelity performance. Brands we love: Marantz, Musical Fidelity, Technics (825 words) - [Streamers – Upscale Audio](/content/collections/streamers/index.html): Streamers - Stream high-quality audio from the internet or local libraries effortlessly. Brands we love: Bluesound, Lumin, Naim Audio (1,920 words) - [Music Servers – Upscale Audio](/content/collections/music-servers/index.html): Music Servers - Store and manage your entire music library with servers that offer audiophile-grade sound. Brands we love: Roon, Grimm Audio, Aurender (720 words) - [DACs – Upscale Audio](/content/collections/dacs/index.html): DACs - Convert digital signals to analog with crystal-clear precision. Brands we love: Berkeley Audio Design, AURALiC, Cambridge Audio (2,141 words) - [Stereo Receivers – Upscale Audio](/content/collections/stereo-receiver/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (170 words) - [Power Amplifiers – Upscale Audio](/content/collections/power-amplifiers/index.html): Power Amplifiers - Used to drive speakers with immense power and precision, transforming refined signals from the preamp into dynamic, distortion-free sound. Ideal for those seeking maximum authority and impact. Brands we love: Anthem, Devialet, Musical Fidelity, Pathos, Lumin (1,967 words) - [Streaming Amplifiers – Upscale Audio](/content/collections/streaming-amplifiers/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (398 words) - [Preamplifiers – Upscale Audio](/content/collections/preamplifiers/index.html): Preamplifiers - Used to refine and control audio signals before amplification, ensuring every musical detail is crystal clear and setting the stage for an incredible listening experience. Brands we love: Balanced Audio Technology, Parasound, Pro-Ject, Manley Laboratories, NAD (1,262 words) - [Integrated Amplifiers – Upscale Audio](/content/collections/integrated-amplifiers/index.html): Integrated Amplifiers - Amplifiers that combine a preamplifier and power amplifier in one unit, delivering high-end performance with simplified setup. Brands we love: Cambridge Audio, Naim Audio, Western Electric, PrimaLuna, Mark Levinson (3,083 words) - [Turntable Tools & Accessories – Upscale Audio](/content/collections/turntable-tools-accessories/index.html): Turntable Tools & Accessories - Essential tools for perfect turntable setup, from alignment gauges to mats. Brands we love: Dr. Feickert Analogue, Rega, VPI (1,264 words) - [Record Cleaning – Upscale Audio](/content/collections/record-cleaning/index.html): Record Cleaning - Keep your vinyl pristine and your sound immaculate with our record cleaning systems. We offer everything from automatic washers to precision ultrasonic cleaners. Proper cleaning removes dirt and dust, improving sound clarity, preserving record value, and extending stylus life. Even new records benefit from cleaning, removing the mold release compound for the best sound. Brands we love: Kirmuss Audio, Audio Desk, MoFi Electronics (887 words) - [Turntable Dust Covers – Upscale Audio](/content/collections/dust-covers/index.html): Dust Covers - Custom-built dust covers that protect your investment and ensure long-lasting performance. Brands we love: AudioShield, Clearaudio (248 words) - [Phonostages – Upscale Audio](/content/collections/phonostages/index.html): Phonostages - Expert-curated phonostages matched to your table and tonearm for pure, dynamic audio. Brands we love: Manley Laboratories, Sutherland, Zesto Audio (1,977 words) - [Cartridges – Upscale Audio](/content/collections/cartridges/index.html): Cartridges - Capture every nuance of your vinyl records with precision-engineered cartridges, perfectly matched to your system. Our expert staff will guide you in choosing the ideal cartridge to complement your turntable, tonearm, and overall setup, ensuring maximum sound quality. We’ll even handle installation and alignment at no extra charge, so you can enjoy flawless playback right away. Brands we love: Ortofon, Soundsmith, Hana (4,101 words) - [Tonearms – Upscale Audio](/content/collections/tonearms/index.html): Tonearms - Precision-engineered tonearms that guide your cartridge with absolute accuracy, ensuring every detail of your vinyl playback is faithfully reproduced. Our expert staff will help you select the best tonearm for your turntable and cartridge combination, and we provide professional setup to guarantee perfect performance. Brands we love: Graham Engineering, Reed, Kuzma (831 words) - [Turntables – Upscale Audio](/content/collections/turntables/index.html): Turntables - Our turntables are expertly set up for you, saving hours of frustration. We’ll unbox, install, and align every accessory—tonearm, cartridge, or upgrade—at no extra charge. When you take it home, you’re ready to spin and enjoy music immediately. Must-have brands we love: VPI, MoFi Electronics, Pro-Ject (2,057 words) - [Speaker Feet & Spikes – Upscale Audio](/content/collections/speaker-feet-spikes/index.html): Speaker Feet & Spikes - Optimize your sound with precision-crafted feet and spikes that reduce vibrations. Trusted brands we love: IsoAcoustics, JBL (645 words) - [In-Wall Loudspeakers – Upscale Audio](/content/collections/in-wall-loudspeakers/index.html): In-Wall Loudspeakers - Enjoy clean, unobtrusive audio with in-wall speakers that deliver premium sound without taking up floor space. Top brands we love: GoldenEar, Fyne Audio, Tannoy (1,435 words) - [Center Channel & Surround Loudspeakers – Upscale Audio](/content/collections/center-channel-surround/index.html): Center Channel Speakers - Hear every word and feel every effect with dedicated home theater center channel speakers. Brands we love: Focal, Polk Audio, Tannoy (981 words) - [Supertweeters – Upscale Audio](/content/collections/supertweeters/index.html): High-fidelity music systems. Precision selected rare tubes. We treat your system like it's our own. This is Music Illuminated. (193 words) - [Floorstanding Loudspeakers – Upscale Audio](/content/collections/floorstanding/index.html): Floorstanding Speakers - Command your room with full-range, floorstanding speakers designed for deep, immersive sound. Our favorites: Klipsch, Tannoy, Focal, Fyne Audio, Revel (2,713 words) - [Subwoofers – Upscale Audio](/content/collections/subwoofers/index.html): Subwoofers - Unleash powerful, deep bass that transforms music and movie experiences. Impactful brands we love: REL, JL Audio, Cabasse (806 words) - [Powered Loudspeakers – Upscale Audio](/content/collections/powered-loudspeakers/index.html): Powered Loudspeakers - Simplify your setup with high-quality, self-amplified speakers that deliver robust sound. Brands we love: Bluesound, Devialet, Elac (528 words) - [Bookshelf Loudspeakers – Upscale Audio](/content/collections/bookshelf/index.html): Bookshelf Speakers - Compact, audiophile-grade bookshelf speakers perfect for smaller spaces or immersive home theaters. Brands we love: Fyne Audio, Wharfedale, Monitor Audio (2,205 words) - [Preamp Tubes – Upscale Audio](/content/collections/preamp-tubes/index.html): Preamp Tubes - Elevate your listening experience with preamp tubes that boost audio signals for breathtaking detail and musicality. Expert-curated brands we love: PrimaLuna, Mullard, Telefunken (627 words) - [Rectifier Tubes – Upscale Audio](/content/collections/rectifier-tubes/index.html): Rectifier Tubes - Shape the dynamics of your tube amp with precision-engineered rectifier tubes, converting power seamlessly. Brands we love: Mullard, Primaluna, Tung-Sol (267 words) - [Power Tubes – Upscale Audio](/content/collections/power-tubes/index.html): Tube Basics and FAQ Grading and Matching Tube Warranty & Return Policy Cryogenic Treating Tube Testing Equipment Why We Don't Sell Certain Brands (553 words) ## About Pages - [The Upscale Team – Upscale Audio](/content/pages/team/index.html): Meet our merry band of music-mad audiophiles who live and breathe the brands we sell. Hear all about how we got into hi-fi, and see how many of our "on repeat for life" albums are on your list too. (1,761 words) - [About us – Upscale Audio](/content/pages/about/index.html): Welcome to Upscale Audio Upscale Audio is the world's largest purveyor of vacuum tubes, including rare, vintage, and 'new old stock' tubes that aren't available anywhere else. Every tube we sell is tested and graded by us with state of the art and proprietary equipment. The Upscale seal on every tube we ship is your gu (1,172 words) ## Resources - [Full Page Index](/index.html): Browse all cached pages with rich metadata - [About This Cache](/about.html): Methodology, technical details, and usage guidelines - [XML Sitemap](/sitemap.xml): Machine-readable sitemap for crawler discovery - [Robots.txt](/robots.txt): Crawler directives - [Agentsite Network](https://agentsite.network/network.html): Public index of Agentsites and their machine-readable resources