This is the tube you want rugged, quality made 300B with clarity and musicality. The highly reliable TA-300B (manufactured by Takatsuki Electric Industry Co. Amp/Preamp Asylum: REVIEW: Manley Laboratories neo-classic 300B pre Preamplifier (Tube) by JayTea. Class-A2 1636 amp using a power opamp driver. For-Sale: Amplifier (Tube) Page: [ 1 ] Number of Ads/Page: AES (Cary) SE-1 Beautiful sounding 300B amplifier Custom faceplate: $1,100. The Fender 5F1 Champ is a Class A cathode biased amp. Our tube amplifiers are the only ones ever designed with, and optimized for, full-range and other high efficiency speakers. As a thank you for the 300B amplifier schematics, Stamou has shared with us his implementation of the 300B single-ended (SE) tube amplifier schematic by J. Aiqin's 300B tube amps are already one of leader of chinese market AIQIN is well-known brand in china, this 300B tube amplifier is sold a few hundred per month. I used a Moth 45 SET with my Cornwalls and the sound was wonderful. The current generation of the 300B is receiving praise from a wide range of listeners and amplifier producers alike. com FREE DELIVERY possible on eligible purchases. Vacuum tubes have long been known and favored for adding a very warm, rich, and identifiable musical element to the distortion of sound they produce, in contrast to the more artificial distortion of the more common transistor. Are you looking for the very best tubes for your vacuum tube amplifier? This is the place to start. ( Many tube power amplifier in Hi-End audio market. see Amp Michaels Waynes description for details. Lamm Industries ML 2. An inherently pure Class A bias triode design with a single output tube per channel, this power amp is rated to provide a robust 7 watts per channel. Aside from the monoblocks, that is. I find 300b amps, SET or pushpull tend to have a somewhat over ripe lower midrange/upper bass. 12" (3mm) Tube, Dual 0. And the output transformer is halved in size. This is the "benchmark" tube that got stuck with the 7. There is a switch on the rear that allows you to use the MS-300B as a dedicated headphone amp diverting all the power directly to the headphone output. The Schematic. In TU-8600R, the 300B tubes are heated after the indirectly-heated tubes have warmed up. The KR Audio 2A3 HP tube is fully compatible with any well designed 2A3 amplifier and sonically delivers exactly what owners of these special amps expect, and then some. Emission Labs Tubes. A lot of the recording we like to listen to are not always pleasing to the ear. Building your own tube amplifier became a popular hobby and tubes were widely available after World War II. The 300 Beast is a 300B push pull amp that I designed and built several years ago. LaoChen 845 300B audiophile Tube Amplifier Single-Ended Class A Amp with VU meter 100% Brand New If your speakers and audio source are very good, you have a higher level of pursuit for the sound quality of the machine and the sound level of the tube. Description I know this amp has been out for a few years, but for a long time the EC-300B was the all-out statement amp for WAVAC. Tube-friendly design Warm-up time for directly-heated and indirectly-heated tubes largely differ. 95: Marshall JCM800 2204a 50w Tube DIY Amp Kit VERSION 1 $509. It have to be experienced as a description is far from enough compared to feeling it in your chest!. Thanks, Gordon. There is more information about power supply design with tube rectifiers in the Power Supply Design for Vacuum Tube Amplifiers article. The soundstage offers a three dimensional and vibrant realism. The World Most Powerful 300B amplifier: Generating power from eight pieces / four matched pairs of 300B tubes per channel. This tube feeds an interstage transformer designed specially by Audio Note for use in the Interstage Mono Block Kit. The 12w example above will likely have an idle bias around -80v per tube, so the phase inverter will need to deliver 160 peak-to-peak which will complicate the design of that inverter/driver. OVERVIEW The 300B PSE is an unusual single-ended tube amplifier that I designed in 2002. Adobe Reader is required to view PDF files. The finest examples used Plitron interstage,output and power transformers, sadly no longer available. 99 USD $269. He tested and comparated this topology versus a pure tube vacuum state power supply design with a 300B output tube amplifier and there was no difference both while listening and measuring the output noise spectrum. Now you can order a complete kit for Modern Western Electric Model 91A (WE91A) power amplifier, JEL power amp, or JEL preamp!!!! Read on. You may also like. But, even if you're a complete novice in the world of audio amplifiers, it is easy to find a great product to suit your needs online. All the tweed is intact and clean, as is the mustache handle. There is a switch on the rear that allows you to use the MS-300B as a dedicated headphone amp diverting all the power directly to the headphone output. This eliminates the output coupling transformer from tube amps, along with the distortion and non-linearity of the transformer. 38 viewed per day. For those who are looking for more power output and true triode sound, there is the Elekit TU-8300 Stereo Tube Amplifier Kit which is based around 300B tubes. It's very important to get a properly designed one with proper circuitry and transformers. A push-pull 300B amp will not make as much demand on the power supply filtering, but trades that for very stout phase inverter/driver requirements. These latter tubes are found in a variety of Chinese built audio gear, such as the Shanling T-100 CD player. A few agree with me. DIYTube Get Set Go 300B Headphone Amp Antec is one of the few manufacturers out there that builds certain toroids specifically for tube amplifiers. Elekit TU-8600R 300B Tube Amplifier Kit - Lundahl Version; Elekit TU-H82 Hybrid Tube Amp Kit; Model 16LM Mono Integrated Tube Amplifier; Model 16LS Stereo Integrated Tube Amplifier; Model 8LM Mono Integrated Tube Amplifier; Model 8LS Stereo Integrated Tube Amplifier; Model K11G Monobloc Tube Amplifier Kit; Model PL Stereo Tube Preamplifier. I might try some Psvane 6SL7 tubes first. As of 12/11/2005 [ Projects | Search]. We stand by all of our products, striving to give you the optimal sound stage environment with quality tube amplification products. It would depend on the number of output tubes employed in what mode of operation with what transformers. Since it is a three element tube, (plate, grid and cathode/filament), many tube failure modes are eliminated. 99 USD $269. com offers 374 300b tube amplifier products. I know Bill B has got the Harmonia 300B based Tube Buffer that really looks amazing. The advanced HI-FI design without large loop feedback makes the sound delicate and lingering, and rich musical. This is a high power amplifier that outputs 12W being 50% more than 300B. Western Electric 86 300B output stage. 5U 300B Single Ended Amplifier This time will be use H20-3. But when it comes to the 300b, arguably the finest audio tube the world has ever known, Woo Audio has only a couple of options. Truly a magnificent pair, faithfully cared for tube amps from the genius Vladimir Lamm. Despite being relatively low powered, 2A3 still is the triode of choice for many high-end audio amplifiers and DIY projects. This is the tube you want rugged, quality made 300B with clarity and musicality. 99 USD Line magnetic LM-219IA 310A 300B 845 integrated Amplifier Class A single-ended Power Amplifier. 6P1 Tube Vacuum HiFi Single-ended Power Amplifier A Audio Amp Stereo Home Class Class Amp Home Stereo 6P1 Amplifier A Power Tube Audio HiFi Vacuum Single-ended. Israel Blume's Frankenstein amps are a modern 300B amp that have had very good reviews, and sound fabulous. Description I know this amp has been out for a few years, but for a long time the EC-300B was the all-out statement amp for WAVAC. China Amplifier (6J8P-300B/2A3 SE KIT), Find details about China Amplifier, Tube Amplifier from Amplifier (6J8P-300B/2A3 SE KIT) - Sino Vacuum Tube Amplifier Co. I fired up my new Dared VP-300B four days ago. The bandwidth (at –3dB) is from 20Hz to 20kHz, without any feedback. "However, most 300B intergrates, usually are rated at 6-12 Watts but in "Class A". Famous Hi-End manufacturers like Jadis, Cary, Audio Note…etc all offer their top models based on the 300B single-ended amplifier design. This time they didn't have the purity, immediacy, transparency and the ultra low sound-floor of the Golden Tubes (neither does any other amplifier I have ever heard). All that is required is a couple of resistor changes. An inherently pure Class A bias triode design with a single output tube per channel, this power amp is rated to provide a robust 7 watts per channel. I spent a long time planning the layout of the 300B SET amplifier as you need to be careful so not to create ground loops in your amplifier build. Electro-Harmonix 300B, both regular and Gold versions are clear and honest sonics, reliable and are a great value. 300B-T Tested Months Months warranty Grade Classic Classic 1pc Psvane Treasure 12. It is also using 12ax7 and 12au7 tubes for amplifying and come with extra wide range frequency output. All the tweed is intact and clean, as is the mustache handle. 5 watt 300B amp for my K-horns. FWIW, the best sounding 300B amplifiers I've heard were bespoke units built by Kevin Kennedy -- but way, way out of my price range. Classifieds: FOR SALE - Art audio diavolo 300b tube amp and don sachs tube preamp, oppo 105D - $2500 asking for $2500. Be the first to write a review. The OD-300B uses the 300B output tube, driven by the 6N2 and the 6N3 tubes. I might try some Psvane 6SL7 tubes first. A very tube-friendly design that will not overload tubes that have not fully warmed up. There was no difference between the two tubes' technical performances. 300B Single Ended Mono Power Amplifiers 8 Watts per channel input sensitivity 1. It is my first venture into amp building. That is, as drop in replacements to whatever 300B tube might be in their existing unit(s). The filament supply of the 300B is electronically regulated, and the plate (anode) current settings is done automatically by the amplifier. NOS tubes are available in the $5 USD range and upwards. The 300B SET amplifier was built using point-to-point construction. Marc Felder's Integrated WE91A-2A3 Stereo. I fired up my new Dared VP-300B four days ago. 95: Marshall JCM800 2204a 50w Tube DIY Amp Kit VERSION 1 $509. The 300b power triode first invented by Western Electric back in 1938 and has never been equaled for the unique sound characteristic it delivers. All you are listening to is the 300B and the SE transformer iron. Spec said 300B Single Ended Amplifier has 8W rms so on but real is 6. The item for sale here, the Connoisseur SE-2, is a single-ended tube integrated amplifier using 300B tubes to output up to 9 wattswhich will certainly drive a lot of efficient speakers. Everyone from famous guitar amp manufacturers to golden-eared audio fanatics use our tubes. Xiangsheng - $335. I think, based on what you have written and your speakers, you'd be happiest with a 300B amp. Tube Integrated Amps. Check out the following tube reviews for guidance in getting the best possible tone out of your tube equipment. "So, here I am listening to my Cary300 SEI amplifier one fine day and I get an itch to try a new 300b tube. The legendary 300B tube was chosen. So no coloring of any kind. 19% VAT / pair. The line preamp stage use 6SJ7 tube , The driver stage use 6SN7 to driver 300B power tube. KR Audio - hi-fi and high-end vacuum tube amplifiers. 5K in parts but it is the one of the best SE tubes amps I have heard. cir 300B curves. Nobsound 300B Monoblock Vacuum Tube Integrated Amplifiers Class A HiFi Power Amp Monoblock Design: with independent power supply and signal ground wire, deeper degree of separation than most amplifiers on the market which can bring much stronger sound filed. Amplifier matching – This Silver Night Anniversary is best suited for use with loudspeakers of 89db or better efficiency. Aiqin's 300B tube amps are already one of leader of chinese market AIQIN is well-known brand in china, this 300B tube amplifier is sold a few hundred per month. Vacuum tube audio equipment since 1974. 6sn7 + 300b single-ended output form design This is DIY KIT,you need to solder it by yourself, If you want the assembled board,pay more 12USD,PLS mail me! NOTE: 1. The LM-845 Premium uses Shuguang 300B tubes in drivers, the 310A for amplifier and Shuguang 12AX7 in pre-amplification. I think the simpler non active Zu speakers (the Soul and the Druid) are a really good match to your amp. I fired up my new Dared VP-300B four days ago. Tube aficionados have long known that the best possible realism and detail comes when an amplifier is run in SET mode, or Single-Ended Triode. First I was afraid I needed Rx // to the choke because the gain of a penthode is the slope ( mA/v ) multiplied by Rl, since the choke is not a linear Resistance but a. This pair is fully tested by an authorized Lamm dealer, comes with all original packaging including the custom wood crates, a. Amp Design. useable power is 6 W rms. In TU-8600R, the 300B tubes are heated after the indirectly-heated tubes have warmed up. The 5670 is a very sweet sounding, particularly linear tube (important when using an output tube as linear s the 300B!) There’s enough variety of brands to make tube rolling interesting and it is not prohibitively expensive. The last few amplifiers that I've designed used pentodes and lots of NFB to get low distortion. For Sale Ads. A 12AT7 (dual triode) is used to drive the 300B. To be released around late September, 2017. Customer feedback on these tubes has been extremely positive no matter what amp they are used in. All the tweed is intact and clean, as is the mustache handle. The author chose the 2A3 directly heated triode power tube to implement the Loftin-White circuit. Ten or more years ago, you might have been able to find a 300B integrated amp this well built, and you might have been able to find a 300B amp this affordable—but you certainly wouldn't have found both in the same package. I can't imagine what this might sound like feeding into 10 Altec A2 systems,,. Finally, a chance to enjoy the legendary sound of 300B tubes without spending a fortune. Electra-Print Tube Amp Schematics. The bandwidth (at –3dB) is from 20Hz to 20kHz, without any feedback. Please refer to that review for more infos on the manufacturer. The main or most evident difference between an SE amplifier with 300B tubes, and an amplifier with 813s is output power – we are talking about maybe 10W against 35W. Single-Ended Amps. I built this power supply and the sonic result is very high even if it uses semiconductors the sound depends on the rectifier tube. The "Glowing Hybrid" amp. very very simple single ended 300b valve amp schematic? The ±2. "Ruby" XR 300B Reference SET Monoblock Amplifier. Dave Ewing's 300B Integrated stereo amp Note the table it's on: a candlestick and a quill pen! It evokes that 1800's, "world lit only by fire and a 300B" feeling. It is based loosely on a design that appeared in Vacuum Tube Valley issue number 12 a few years ago. The result is the "Fatboy" 300B amp - named as such because, like me, it is a tad overweight. The owner, Joe Fratus, considers their PX-25(which I own) to be their finest. Find great deals on eBay for 300b tube amplifier and single ended tube amplifier. The driver stage, powered at 400V, is built around a double-triode 6SN7. ステレオマイク1本で録音してみました ご参考までにどうぞ。. power Tube: 300B * 4: impulse Tube: ECC99/12BH7/12AU7 * 2 12BH7/12AU7 * 2. At Jolida we strive to provide our customers with premium vacuum tube home electronics for every sound stage. It takes a very quiet and well behaved high voltage power supply and a super quiet filament supply. TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar players, DIY tube audio enthusiasts, and audiophiles. The finest examples used Plitron interstage,output and power transformers, sadly no longer available. There is more information about power supply design with tube rectifiers in the Power Supply Design for Vacuum Tube Amplifiers article. Although that design was not single ended I think. 300B Single Ended Mono Power Amplifiers 8 Watts per channel input sensitivity 1. Classifieds: FOR SALE - Art audio diavolo 300b tube amp and don sachs tube preamp, oppo 105D - $2500 asking for $2500. In the meantime the materials arrived and while I wait for some stuff which is needed to continue with the 211/211 amps, I finished the single ended 300B mono blocks. The MQ-300 is a stereo power amplifier with a single configuration 8W + 8W output. The RH Universal easily over-powers classic 300B amps while providing better bass and definition, while the RH307A offers approximately the same power of classic SE 300B amps from a less expensive tube (while providing better bass and definition), and adds the thrill of direct heating, the particular sound of direct heated tubes…. Biasing an amp requires some knowledge of tube amp circuits and experience with high voltage. The 300B is an unusual single-ended tube amp with 300B power tubes. It is frequently used in single-ended triode (SET) audio amplifiers but unfortunately they are lack of the power that EL-34 and KT-88 tubes can produce. All resistors I used were 2w carbon and the hum balance pot is a ten-turn type. Buy Nobsound 300B Monoblock Vacuum Tube Integrated Amplifier; High-End Class A Hi-Fi Power Audio Amp; 1 Pair (JJ Tesla 300B): Amplifiers - Amazon. The maximum available output power will be slightly reduced. This is an amplifier that will always delight and entice you as it adapts to a variety of efficient speakers (and ears!). Tube choice This amplifier, can be operated with every possible 300B tube available on the market. OVERVIEW The 300B PSE is an unusual single-ended tube amplifier that I designed in 2002. The item for sale here, the Connoisseur SE-2, is a single-ended tube integrated amplifier using 300B tubes to output up to 9 wattswhich will certainly drive a lot of efficient speakers. Power output is a whopping 8 (or maybe 9) watts per channel with no global negative feedback; the amp can also be wired for double-the-power mono operation. Conservatively rated at 8 watts per channel. Finally, someone has made a Single Ended Triode amplifier with deep, powerful, extended bass and highs that extend to the limits of human hearing. The 300B tube requires 5 volts and 1. We stand by all of our products, striving to give you the optimal sound stage environment with quality tube amplification products. The amazing thing is it sure doesn't sound like what one would imagine a low powered amplifier should. $1K), including myself, to try to narrow down those 300B amplifiers (8W) available online (eBay, Aliexpress, DH Gate, DealExtreme etc) that seem they could hold a lot of potential based on specs (circuit, transformers, tubes, components etc) and visual build. Aiqin's 300B tube amps are already one of leader of chinese market AIQIN is well-known brand in china, this 300B tube amplifier is sold a few hundred per month. The Western Electric WE 91E was recently taken from prototype stage three into pre-production. The first stage is SRPP constructed by 6SN7 twin-triode tubes and the final stage is a common-cathode 300B tube. The Transcendent 300B SE-OTL is worth the effort and expense though, it is an amazingly good amplifier when partnered with the right speakers. Despite being relatively low powered, 2A3 still is the triode of choice for many high-end audio amplifiers and DIY projects. Classifieds: FOR SALE - Art audio diavolo 300b tube amp and don sachs tube preamp, oppo 105D - $2500 asking for $2500. com FREE DELIVERY possible on eligible purchases. We stand by all of our products, striving to give you the optimal sound stage environment with quality tube amplification products. The amp delivers 7 watts into 8 ohms from a 300B, with quality both inside and out. 2A3 is very nice, but if you're looking for an amp that does not need to blow the roof off, my favorite would be a 45 SET. 2v is a good target for a warm amp. Integrated tube amplifier made in Italy. Make offer - Douk Audio 6N8P+300B Vacuum Tube Amplifier HiFi Stereo Integrated Amp 7W*2. Although that design was not single ended I think. We encourage users purchasing high-value items to meet and verify their purchases at a safe. 20 (1 new offer) Nobsound Stereo 300B Push 845 Vacuum Tube Power Amplifier HiFi Class A Audio Amp 25W×2. All you are listening to is the 300B and the SE transformer iron. By the way, what 300B amp are you now using? Hey Arnold, how about pictures of my amp. It was chronically over-engineered and cost $3. Why Grant Fidelity?. E! Great for iPod $689. The amplifier uses two 300B tubes in parallel, which yields 30W of clean and wonderful single-ended 300B power! The input stage also relies on two. Such as tubes,tube sockets,capacitors,resistors,tag board,meter,pot,knob,feet,chassis and so on to get you started. After you have listening the 300b or 2a3, you will never go back to kt88, 6l6gc, el34 anymore, it sings absolutely clean, detail, beautiful, it is so wonderful. The amp delivers 7 watts into 8 ohms from a 300B, with quality both inside and out. A few agree with me. Tube aficionados have long known that the best possible realism and detail comes when an amplifier is run in SET mode, or Single-Ended Triode. The 300B-XLS is made to deal with such conditions, and will allow the amplifier to play gently at low sound level, as well as reproduce higher sound level with the detail and precision you expect from a push pull amplifier. It takes a very quiet and well behaved high voltage power supply and a super quiet filament supply. com ,the Leading Trading Marketplace from China. The 300B tube has the bayonet pin so located that it may also be mounted in a Western Electric 100M, 115B or similar socket. 5 V of a balanced A/C filament (and the linearity of the tube's electron emission) ought to pretty. LaoChen 845 300B audiophile Tube Amplifier Single-Ended Class A Amp with VU meter 100% Brand New If your speakers and audio source are very good, you have a higher level of pursuit for the sound quality of the machine and the sound level of the tube. Tube Type and Plate-to-Cathode Voltage must be entered for all calculations on this webpage. Can, i buy a complete kit or is it better/ cheaper to buy it all individual. The cathode by-pass capacitors are BlackGate FK type for the 300b tube and VK for the driver. Even if safe, an output transformer for the usual SE amps will not be able to perform correctly at high power levels. This sonic advantage exists not only with the new Frankenstein amplifier, it also applies with other low-powered SET amplifiers with an adequate (though not outstanding) damping factor, like, surprisingly, the highly modified version of my Golden Tube 300B amplifiers. other way 2A3 SE with Tango,Tamura Transformer. You can hardly find another 300B integrated amp built to this quality level at this price point!. Yes, for $495 you can enjoy the sound of 300B "KING of the TUBES" or 2A3 "Queen of the Tubes" Entering the real audiophile world. unrated For sale is the Audio Electronic Supply (AES) SE-1 Signature single-ended triode 300B/2A3 tube amplifier made by AES, a division of Cary Audio Design, in perfect working order. Sound Character of the 300B-XLS tube. After the initial feedback I got from him, it might take a while before he returns my amp. 300B was designed as audio power triode by Western Electric. Hope they get that sorted out. A tube amp feels like an extension of the instrument. As mentioned, this is the tube you'll see shipping with any number of China-made 300B amplifiers. Western Electric announce 300B to re-enter production, launch of new 91A amplifier Posted on January 21, 2018 by Rafe Arnott in Announcements // 4 Comments Feel the 300B love. The 300B is an unusual single-ended tube amp with 300B power tubes. This DIY 300B triode amplifier project was completed by Stamou Tasos who is from Greece. As a thank you for the 300B amplifier schematics, Stamou has shared with us his implementation of the 300B single-ended (SE) tube amplifier schematic by J. 12BH7A Cathode Follower Driven 300B Single-Ended Power Amp Project with Hashimoto PT-270, C-10-200W, and H-20-3. Being offered are many input and output transformers, speaker parts, capacitors, cables and much. 300B Tube Reviews. About Jolida. This pair is fully tested by an authorized Lamm dealer, comes with all original packaging including the custom wood crates, a. yourself,diy,lundahl. The Kaiju 300B amp is indeed a beast, capable of 8 watts per channel in stereo configuration and 16 watts of 300B magic as a monoblock. This octal tube has so much current capability it can put out 2 watts as a single ended output tube. "Ruby" XR 300B Reference SET Monoblock Amplifier. In most designs, amp power-up starts heating both the directly heated 300B tubes (fast warm-up) as well as the indirectly-heated 12AU7 and 12AX7 (slower warm-up). The driver stage, powered at 400V, is built around a double-triode 6SN7. Electra-Print Tube Amp Schematics. The filament supply of the 300B is electronically regulated, and the plate (anode) current settings is done automatically by the amplifier. 38 viewed per day. Amps with power tube cathode resistors greater than 10 ohms are usually cathode biased. The result is an amp with amazing sound quality, super low noise, and can be used with headphones. png 847 × 742; 49 KB. Here are some DIY schematics to ponder. The SET-300B, as you've correctly guessed by the model name, is a 300B-based single-ended-triode stereo amplifier. Building your own tube amplifier became a popular hobby and tubes were widely available after World War II. 3 volts at 4 amps. Classifieds: FOR SALE - Art audio diavolo 300b tube amp and don sachs tube preamp, oppo 105D - $2500 asking for $2500. : Tube/Itergrated Amplifiers - CD Players Tube/Itergrated Amplifiers Vacuum Tube Audio Cables Power Flter Socket Headphone Amplifiers Speakers USB DAC Decoder Pre-Amplifier Audio Rack HiFi Shanling Auido CD player, Hifi E&T Audio Rack, ToneWinner HDCD Player, JungSon Audio CD player&Speakers, Xindak Cables & Amplifier, Opera Audio Consonance CD player, Bewitch vacuum tube Amplifier, G&W power. Two PSvane 300B power tubes, one 6SN7 and one 6SL7 small signal tubes, and one 5AR4 rectifier. There is no comparison. The Spirit is the pinnacle of 300B tube amplifiers. 19% VAT / pair. Designed to compliment to Aqua 274B and Classic 300B tubes, the new 6SN7 is a great choice to replace vintage 6SN7 tubes in all tube pre-amplifiers and tube amplifiers. NOS tubes are available in the $5 USD range and upwards. The current model under test is the MD300A, an integrated amplifier that uses a pair of the legendary 300B vacuum. 300b single-ended triode (set) amplifier schematic. D avid Berning is considered to be one of the world's most respected amplifier designers. This pair is fully tested by an authorized Lamm dealer, comes with all original packaging including the custom wood crates, a. All Synthesis audio components are available for audition in our listening rooms. The current model under test is the MD300A, an integrated amplifier that uses a pair of the legendary 300B vacuum. Be the first to write a review. Why? Are there really similar characteristics between chip amplifiers and tube amplifiers? And if there are, what are they? This one is an example:. Description I know this amp has been out for a few years, but for a long time the EC-300B was the all-out statement amp for WAVAC. I had a 300B designed for me from the ground up by a electronics engineer from Seattle who builds value amps himself. Western Electric 310a replicas and 12AX7’s fill out the rest of the tube compliment which I believe are part of the pre-amp stage. Over the years Supratek has produced many types of tube power amplifiers- Single Ended, Push Pull and OTL. THIS MODEL AND ALL OTHER PRODUCTS OF THE LINE DHANI AMP ARE DESIGNED AND ASSEMBLED BY HAND IN ITALY. The 300B is an expensive tube, but is extremely long lived and stable. In the meantime the materials arrived and while I wait for some stuff which is needed to continue with the 211/211 amps, I finished the single ended 300B mono blocks. If you listen to your amp for 6 hours every day (without skipping a day), such a tube will last you about 20 years. In pursuit of great sound quality of the 300B amp, we have updated and improved the amplification, power, and feedback circuitry. Put more succinctly, the tube supplies were so sizable that even today tubes from that period and earlier (from the rarer 1930s) are available as so-called New Old Stock. As-300B is an integrated amplifier that can also be used as pure power amplifier. This octal tube has so much current capability it can put out 2 watts as a single ended output tube. I owned an older Mastersound 845 as well as 300B and 32B integrated amps from this company. Since 2006, its EL34 series is already sold more 10milles copies. The pre amp and driver are made with 6SN7, best described as 'What goes in, is what comes out. 5U Hashimoto Transformer for 300B Single Ended Amplifier 2016 Mr Audio from South Americain PeruMr Western Electronics Still using 300B Single Ended Amplifier with Raspberry Pi Volumio Music Server 2016 PSVANE 300B with James Transformer 300B Single Ended Amplifier on. (And yes, a transformer has it's own sound). In electronics the 300B is a directly-heated power triode vacuum tube with a four-pin base, introduced in 1938 by Western Electric to amplify telephone signals. The two high voltages, driver and power, have vacuum-tube power supplies. 300B single circuit configuration. Inputs: 3 line inputs. There is a speaker impedance matching toggle switch on the back of the chassis. Review by Noam Bronstein. 300B Tubes. The other aspect that I'm impressed by is the bass. Electro-Harmonix 300B, both regular and Gold versions are clear and honest sonics, reliable and are a great value. 20 (1 new offer) Nobsound Stereo 300B Push 845 Vacuum Tube Power Amplifier HiFi Class A Audio Amp 25W×2. As mentioned, this is the tube you'll see shipping with any number of China-made 300B amplifiers. Put more succinctly, the tube supplies were so sizable that even today tubes from that period and earlier (from the rarer 1930s) are available as so-called New Old Stock. Wavelength Audio, creates and designs high end products for home audio, pro audio, guitar/bass amps, USB & computer audio. This product was further improved in precision and reintroduced. The 300B is a directly heated power triode tube which was first introduced in 1937. Single Ended Triode in parallel to double the power of legendary 300B tube output - you can use it either as integrated or a straight forward power amp. Shopping for Cheap 300B 2A3 Small Triode Amp at HIFI EXQUIS and more from tube amplifier hifi,tube amplifier,amplifier hifi,300b tube amplifier,class a tube amplifier,amplifier wire on Aliexpress. Not being able to design an amplifier from scratch completely (this is the next step), I decided to interpret Roberts' interpretation and developed a mono block pure Class A single ended design using 300B tubes as power valves and 310A as first stage valves. 2A3 is very nice, but if you're looking for an amp that does not need to blow the roof off, my favorite would be a 45 SET. About 2 watts of tube magic. First I was afraid I needed Rx // to the choke because the gain of a penthode is the slope ( mA/v ) multiplied by Rl, since the choke is not a linear Resistance but a. Of course this amp deserves a 'Making Of' series of posts. The driver stage, powered at 400V, is built around a double-triode 6SN7. The 8600R has been reviewed by Stereophile and is now a Stereophile recommended component. In pursuit of great sound quality of the 300B amp, we have updated and improved the amplification, power, and feedback circuitry. As music pours out of Elekit's new amp through my speakers, I'm smiling, and remembering that some things are much more than the sum of their parts. Single Ended Triode in parallel to double the power of legendary 300B tube output - you can use it either as integrated or a straight forward power amp. The line preamp stage use 6SJ7 tube , The driver stage use 6SN7 to driver 300B power tube. A wide variety of 300b tube amplifier options are available to you, such as professional amplifier, home amplifier, and mini amplifier. A 12AT7 (dual triode) is used to drive the 300B. I used a Moth 45 SET with my Cornwalls and the sound was wonderful. Unfortunately, there are probably more of the syrupy variety than examples of well executed 300B amps, but thats what happens when folks are more interested in capitalizing on the 300B reputation than making a good amp. AS-6M (300B) P-P Mono Amplifiers; AS-6M (300B) SE Mono Amplifiers; AS-6M (KT88) Mono Amplifiers; AS-8i MKIII Tube Integrated Amplifier; Galaxy 300 Tube Integrated Amplifier; Galaxy 34 Tube Integrated Amplifier; Galaxy 88 Tube Integrated Amplifier; LINE-2 Preamplifier; LS-3/5A Monitor Speaker; Mini Galaxy 1 Tube Integrated Amplifier; Mini-2. Not being able to design an amplifier from scratch completely (this is the next step), I decided to interpret Roberts' interpretation and developed a mono block pure Class A single ended design using 300B tubes as power valves and 310A as first stage valves. Inexpensive 2A3 single amplifier makes a poor sound. In my correspondence with Jac, he recommended that 5. OVERVIEW The 300B PSE is an unusual single-ended tube amplifier that I designed in 2002. The question also was which speakers should I use with the amp. The 300B is an unusual single-ended tube amp with 300B power tubes. We encourage users purchasing high-value items to meet and verify their purchases at a safe. Used 300B Tube Amplifier for sale on 300+ second hand hifi sites & shops. "A most amazing amplifier.