300b Valve Amplifier, Several vendors in China and Taiwan, two in Russia and three in the Czechs and Slovak Republics make 300B’s. Using them in push-pull mode, Melody gets 21 Watts out of the AN300B MAX integrated amp, according to Jason Kennedy! LINLAI E-300B 1 Pair 300B Elite Vacuum Hifi Valve Electronic Tube for Class Pairing Audio Amplifier Replaced 10W Power Amplication (E-300B 1pair),DIFIIFOL,Tubes,Parts,Accessories,Amplifiers & Effects,Musical Instruments China-hifi-Audio online store Willsenton R800i 300B 845 Single-end Class A tube Integrated amplifier Balanced - Willsenton R-800i 300B 845 tube Single-ended Class A Integrated Amp & power amplifier with true Balanced XLR input Export version 100% Brand New Willsenton provide the Special Tailor-Made Export version to us, use the best parts and technology, looks top grade and Luxury. Sep 11, 2025 · As per the title, I'm looking for recommendations for 300b's, both for the valves themselves and where/how to buy. Point to Point True Audiophile. Explore the realm of premium audio with the best 300B amplifiers and elevate your listening experience to new heights. Input Section and Magical Output Transformers force 300B linearity. A third party DC filament supply for the 300B valve. 300B Amps: an early breadboard Browsing my schematic archive I found this early implementation from some years ago on the 300B: The amp design is straight forward. Totally independent power supplies for the driver valve and the power valve. And yet, it has taken my appreciation of the 300B to a new level. After many years of failing often to hear good 300B amps and that I wanted to increase a bit the power of my current 4P1L PSE, I got my hands busy again in designing a new amplifier. 300B SET 300B SET TT (Triode/Triode). I have Audion Silver Night PSE (Parallel Single Ended) monoblocs driving slightly-modified AvantGarde Duo Omega's. It’s been long since I had a 300B around. The vast majority of the negative comments about them are misleading in my view as very few designs out there are able to get the best out of a 300B in SE. Hi Folks, I already have a pair of this output transformers: Primary: 2,5k or 3,4k 18W I would like to build a 300b stereo amplifier or two mono amplifiers for my HiFI. Icon Audio Stereo 300 MkII valve amplifier uses the 300B valve, one of the best sounding (if not the best sounding) valve ever made. aliexp The Hi-Fi Class A Single-ended 300B Valve Tube Audio with German Components and Sikatrop Cap is a vintage tube amplifier featuring a 300B model. Some days I have to pinch myself. Special U. There's a time for everything and from the last two years of work on high-efficiency speakers, I needed a wider range of low-wattage valve amplifiers, thus also a reference 300B SET amp - 22 years after Hiraga's book. DC heater supply for the 6C45 valve Fixed bias for the 300B valve adjustable via a trim pot at the rear panel. And, the push pull 300B has symmetrical dampening of the woofer. Since those days a true Aladdin’s cave of 300B valves have become available. In this review, we delve into the top 300B amplifiers, providing detailed insights and expert recommendations to help you make an informed decision when choosing the perfect amplifier to elevate your audio setup. Free shipping on many items | Browse your favorite brands | affordable prices. This was designed for Western Electric 300B or Takatsuki 300B, the current flow on 300B is 65mA to prevent the tube and make it long life. I just put together my first 300B amp. Willsenton R300 PLUS is an integrated Amplifier, it is a Power Amplifier too (there is a group Power amp input), it is a Headphones amp, too. S. Hard Wired. Circuit Uesugi. It's a directly-heated filamentary type power triode vacuum tube with a four-pin base, specifically designed for audio-frequency power amplification. This project involves an ultra- wide power-bandwidth 300B push-pull amplifier with a Plitron toroidal transformer and Svetlana SV300B matched tubes without NFB. I'm wondering whether there is anyone out there who's been through this and can recommend a short-list of suitable speakers, which I assume will have to be quite sensitive. Newbie here. 30 years ago it was a dream. It also includes a driver circuit design by a circuit simulator, in collaboration with Menno van der Veen, a Plitron transformer designer in Holland (via the Internet). There The TU-8600S is a 300B single-ended integrated valve amplifier kit, pushing out a little over 9 watts output per channel. Still, Jean Hiraga declared the 300B to be "the tube of the century" and in my view rightly so. Melody uses point-to-point wiring in the classic valve style and incorporates Mundorf capacitors in this model. This used fix bias, there is current meter and bias adjust volume, help you check and control bias of the amp. This calls for an evaluation. Are there other tubes that rivals it sonically and in measureable quality? Cheers! Edit 11-2-26 to give a quick Unboxing and first impressions of the new Best 300B Psvane Hifi Vacuum - Must Have! Tube Replaces 300Bl 300B T 300Bs 300B Z Hifi Audio Valve. 300B was slightly less musical, with slightly more control and better focus, and was slightly better in the bass. Very rare and very hard to find Top quality 300b valve made in Japan like this. It is certainly the quietest Still, Jean Hiraga declared the 300B to be "the tube of the century" and in my view rightly so. Their products are available from a number of sources under the Full A few years ago I built this amp based solely on Andrea Ciuffoli's design (audiodesignguide. I used a pair of LL1623/90mA OPTs which I had wired on 3K:8 mode. importer for Melody Valve, wanted me to hear their 300B products, so he forwarded something completely different from the PM845/Pure Black 101 combination, the AN300B integrated amp. There is a fundamental problem regarding "direct" heating of the triodes: Looking for the best English valve amplifiers? Icon Audio is dedicated to the design and production of pure valve (or tube) amplifiers and hi fi equipment. The Factory specializes in early WE Replicas and has build up quite a reputation in Japan. Hugh, the U. The direction of the 8-Pin octal tube sockets for 6SN7 match with the screen silk of the board as in Figure 2. The kit can receive a single RCA input pair controlled by the front-located volume control. com). Jul 11, 2020 · If you listen the BoyuuRange A50 MKIII Amplifier, you will know 300B is good at bass too. 300B review by Thorsten Loesch 300B TJ Premium This Valve is rather new, the units I tested where some of the first series units. The concept of a 300B single-ended amplifier delivering 20-30W output power with three power tubes in indirect parallel operation was thus born. Yet, I always found it very interesting to hear all sorts of comments about the 300B single-ended amplifiers. The 300B is run hot at 33W (376V/90mA) with a fixed bias of about -78V. Pure hand-made, Point to point manual welding. The main HT rail is valve rectified using the 5U4 valve, smoothed by a 10H choke and a combination of 4 reservoir capacitors in a Pi network. Let’s start from the output stage. Compared to the bacchanalia of transformers and tubes of the PM845/PB101 combo, the AN300B is a minimalist exercise. Since then it's been used in several configurations, but the one that . No exception. If we include the souped-up versions—which, in fact, deviate from the original 1930s Western Electric (WE) specifications—the number of 300Bs to choose from now includes about 15 different brands and types. The bigger holes of the 4-Pin plate sockets correspond to the PIN1 and PIN4 of 300B (tube filament voltage). Mainly because the output transformer isn’ Dec 21, 2022 · Melody produces a range of valve amplifiers totalling 16 integrated and power amp models with the AN300B MAX chassis used for seven of them. I haven’t recently heard an under 5000 Euro 300b amp, except the Elekit amp (way under that price) and I was surprised by how decent it sounded. May 17, 2024 · In this review, we delve into the top 300B amplifiers, providing detailed insights and expert recommendations to help you make an informed decision when choosing the perfect amplifier to elevate your audio setup. It is certainly the quietest The main HT rail is valve rectified using the 5U4 valve, smoothed by a 10H choke and a combination of 4 reservoir capacitors in a Pi network. I'm toying with the idea of getting a 300B single-ended valve amp with an ouput of 10 watts or so. Very excited that it turns on and makes sound instead of smoke! The satisfaction of building something that allows me to sit down an enjoy music is undescribably awesome! As for the sound, it is quite good, i think (or is it just the "face Continue reading December 28, 2022 300B Amp, SE designs, Valves & Hi-Fi 300B, 300B Amp, 300B Amplifier, 6BY5G, damper tube 2 Comments EF86 – 300B XLS SE Amplifier build Here is a very nice build from Dan Kercher on his contraption of the 300B amplifier with auto bias. Is there any schematic that I can look at? The 4. The Western Electric 300b has a long and distinguished history, which I don't intend to go into here beyond this brief resume! It was designed in the '30's specifically as a power valve for audio - cinema amps specifically. Over the years I have been swapping parts in and out trying to improve it. A few years ago I built this amp based solely on Andrea Ciuffoli's design (audiodesignguide. This powers the 300B and the EF86 valves. Buy 300b Amplifier and get the best deals at the lowest prices on eBay UK! Great Savings & Free Delivery / Collection on many items About this item ONE YEAR WARRANTY. I don't have room for TOMON LAB 300B SE tube amplifier * designed for WE/Takatsuki 300B Prestage tube is 12AT7/12AY7, driver tube is 6C7G or 6DJ8. Made with high-quality components and a unique Sikatrop cap, this audio device delivers exceptional sound quality with a classic design. Output 18 watts. Single-ended pure Class A tube Integrated amplifier The body of Willsenton R300 PLUS use classic Black piano paint. Uncouple a few connectors, remove four screws, and the transformer rack comes right off the chassis. Our 300B SET TT has some interesting features. click. Max output 10W. Valve 12AU7A2, Power 300b X 2 this, Rectifie 5U4GB. Some transmitting valves are even more demanding. 300b amplifiers are often considered highest fidelity but expensive for this and other reasons and as I understand they are very demanding to the rest of the components and circuitry. For the moment I have a SE PCL 86 amplifier with 4watts, which is actually enough for my speakers, but I hope to achieve 1940’s Decca Decola Radiogram Cabinet Stereo Tube PX25 Amplifier $2,500 Jun 10, 2022 Partridge Output Transformer SE For 300B PX4 PX25 AD1 Limited Edition Super Rare €2,492 Apr 30, 2025 Partridge Output Transformer SE For 300B PX4 PX25 AD1 Limited Edition Super Rare £2,158 Apr 18, 2025 In the last two years, the available choices in 300B output tubes for one's low-wattage single-ended power amplifier have become an embarrassment of riches. Willsenton I have to say that for 5 watts output for example, a push pull 300B amplifier can have lower 2nd harmonic, 3rd harmonic, 2nd order intermodulation, and 3rd order intermodulation distortion than a single ended 300B amplifier. Get the best deals on 300b amplifier when you shop the largest online selection at eBay. The driver valve, the 5687 has its own dual supply +195Vdc and -195Vdc, formed by a solid state supply. I have now finally settled on what I believe is the finest 300B amp I have ever listened to. LINLAI E-300B 1 Pair 300B Elite Vacuum Hifi Valve Electronic Tube for Class Pairing Audio Amplifier Replaced 10W Power Amplication (E-300B 1pair),DIFIIFOL,Tubes,Parts,Accessories,Amplifiers & Effects,Musical Instruments China-hifi-Audio online store Willsenton R800i 300B 845 Single-end Class A tube Integrated amplifier Balanced - Willsenton R-800i 300B 845 tube Single-ended Class A Integrated Amp & power amplifier with true Balanced XLR input Export version 100% Brand New Willsenton provide the Special Tailor-Made Export version to us, use the best parts and technology, looks top grade and Luxury. Order online today. The 300B triode valve is one of the most prized amplifying tubes of the pre-WWII era, but it's no powerhouse. This guide highlights five proven models, detailing their strengths, design approach, and ideal listening contexts. ( So much It does something special with the 300B tube, somehow it’s appropriate, but if you were blindfolded, you probably wouldn’t guess you were listening to a 300B. Imported 0. They are being made in China in the Tianjin Province, the supplier being somewhat coy about more details. Order yours toda PSVANE 300B-SE Vacuum Tube Amplifier 300B 300B-N 300B-98 E-300B 300BT 300B-AT 300B-Z HIFI Audio Valve Electronic Tube AmplifierBuy on https://s. com. But, the best I heard from this tube, for my taste, was a 300b pushpull amp made by Western Electric that had been reconditioned (very expensive). This tube features a solid graphite anode, and its gold-wire grid helps to avoid thermal runaway in fixed bias; also, the four pins on the base are gold-plated. These valves arent easy to make and don't come cheap, but help to make this Stereo 300 MkII one of the best sounding valve amplifiers we've ever What obviously complicated matters here is that, say, the KR Enterprise tubes and the more powerful Valve Art 6300B did sound better when used with an amplifier which was designed specifically for these higher powered, he-man wimp haters 300B-type tubes. The 300B-N is famous worldwide for its incredible sound quality and powerful performance in both single-ended and push-pull amplifiers. Nov 21, 2025 · The following picks focus on 300B-based tube amplifiers that deliver classic warmth, rich harmonics, and robust midrange performance. I don't have room for The use of push-pull 300B output valves in a differential amplifier circuit appears to have been popular for some time in the Japanese audiophile community (that is where the renaissance of directly heated triodes started, after all), but is relatively new in Europe and North America. However, the 300B is yet very much so. It utilizes the Russian 6C45 valve to drive the 300B tube. Valve Art 300B-C60: $179/pair. The 300B features very low distortion, is very linear and still delivers a healthy 30W per channel (into 8 Ohms). Continue reading December 28, 2022 300B Amp, SE designs, Valves & Hi-Fi 300B, 300B Amp, 300B Amplifier, 6BY5G, damper tube 2 Comments EF86 – 300B XLS SE Amplifier build Here is a very nice build from Dan Kercher on his contraption of the 300B amplifier with auto bias. 35 core output amplifier audio dedicated core, core stack thickness 86-50, A20 flux of 13,000. Looking for the best English valve amplifiers? Icon Audio is dedicated to the design and production of pure valve (or tube) amplifiers and hi fi equipment. Audion 300B Special Edition Stereo amp. It does something special with the 300B tube, somehow it’s appropriate, but if you were blindfolded, you probably wouldn’t guess you were listening to a 300B. 1940’s Decca Decola Radiogram Cabinet Stereo Tube PX25 Amplifier $2,500 Jun 10, 2022 Partridge Output Transformer SE For 300B PX4 PX25 AD1 Limited Edition Super Rare €2,492 Apr 30, 2025 Partridge Output Transformer SE For 300B PX4 PX25 AD1 Limited Edition Super Rare £2,158 Apr 18, 2025 Who would have thought that one day I'd be building amps while listening to music coming through a nice valve amp and Tannoy speakers. I am looking to build a very very simple version of 300b SE with very few components. aarf, dv2g, tlaoyy, h7yp, 8mpti, jy7vr1, 3rsfll, zxbml, nfgou, hnkpo,