2a3 tube vs 300b. Solid, well built tube with excellent sonics.

2a3 tube vs 300b Really nice but not quite what I was looking for. I didn't find this quality pleasing because I listen to a lot of cello, either solo or duet with piano. - a "traditional" 300B (tube rectified, C3G driver, transformer coupled) and it sounded very nice, but a little syrupy, slow. My current thought is to use a 2a3 or a 300b and some type dht driver tube in a direct coupled configuration. Feb 23, 2024. I enjoy listening to SET amplified music (via 2A3 power triodes, in my case) -- whether for the first or second rationale proffered above Automatic detection of 300B and 2A3 tubes 300B and 2A3 tubes look similar, but their respective filament voltages and operating parameters are totally different. The It is not likely that you will receive much feedback here about your comparison of 300B and 2A3 tubes because most AVS tube owners have higher powered amplifiers, which In my opinion the 2A3 and 300B aren't that far apart, the 300B has a very laid back lush sound loke if the music is thick. Typical for a 2a3/6a3/6b4g is 250V and 45mA while a 300B often runs at 350 - 400V and 60 - 70mA. Sounds promising. All of these amps come highly recommemnded. The 2A3 vacuum tube is a power triode capable of outputting 3. I don't miss the 2a3, but occasionally I wonder if I shouldn't have stayed with the 300B as I liked the oomph it provided. ” More from Doron O in Feb It is not likely that you will receive much feedback here about your comparison of 300B and 2A3 tubes because most AVS tube owners have higher powered amplifiers, which utilize EL34, KT88, and KT120 power tubes, for example. In other words, Now, was this due to 300b vs 6922/12Bh7 driver tubes or system changes, or aural memory faulty? I recall thinking 300B had something to do with this. Rachel's pavane. And apparently this amp sound signature is really in the I’ve had a few push pull triode amps in the past based around all of the big characters; the 45, 2A3, 300B and 6B4G, and the Tube Fantasy 2A3 monos hold their own fidelity-wise with any of them. You'll see below why I 2A3-40 is similar version of 300B but price is double. Solid, well built tube with excellent sonics. ought to be safe. seems safe enough. Kw6. Hum was lowered, but I don't put my ear right beside my speaker, and decided that my lundahl filament chokes could be saved for valves with thoriated tungsten which require higher voltages and can't be run with AC. You should get better bass response with the 300B. Compared to the existing TJ 300B/n Mesh Plates the SG 300B-z have massive bass, they sound smoother, more relaxed, mid range is fuller (more lush) yet clean – more meat on the bones so to speak. Details; Discussions; Posts; This discussion; Message User; 981 posts. Clarity and purity but also balls. A friend of mine once demonstrated real WE300B vs Japanese 300B, and there was a surprising difference. Copy I have not matched the volume levels of the two systems. Lots of good 300B's out there to choose from and 8W 300B PSVANE HiFi tube Röhren factory matched pair 2x. Audion Silver Night DUO switchable 300B/2A3 power amplifier. Think DNA Stratus or Stellaris as what you could do with a 2A3 tube and transformers specifically designed for headphone Tubes, tubes, tubes! Find everything from the field of tubes: premium selected TAD tubes, TAD blackplate tubes, our beloved tubesets for nearly every amplifier out there, more brands and accessories. In some counties the 300b is called the king of tubes while the 2a3 is the queen. Discussion in 'Headphone Amplifiers and Combo (DAC/Amp) Units' started by Maven86, Oct 19, 2021. 845 Intergrated Tube Amp. The most popular triodes being: 300B 2A3 For those who say they don't understand tubes vs transistors, simply remember that in live music, instruments all resonate in even order harmonics. In my system the 2A3 had a soundstage that filled the entire front wall (small room). The Elekit attracted me quite a bit because of it's ability to put either 2A3 or 300B tubes. Both need pretty efficient speakers, the 2A3 even more so. A 300B or 2a3 or something like that. . It can be quickly seen from the 300B working points at 250V / 60mA / 2700 Ohms, that the output power is approximately 0. The 45 was sublime. Of PLEASE NOTE: Tubes Sold Separately. 300b Never forget that different output valves/tubes - even from the same group can easily have different levels of THD. I have never heard a single-ended amp with DHT output tubes in parallel (PSET). I'd be curious if there are references for the various output tube It's when they are driven by feeble 5-8mA driver tubes that the characteristic 45, 2A3, 300B, or 845 signature appears. , 6 W. So maybe I will then go with 2A3 amp Did you try different versions? Seems that there is the jelabs simple 2A3, the classic jelabs 300b that can be used as 2a3 and for third now this Radiotron SE2A3 that you posted 1975 by Svetlana Tube Factory General characteristics: Type: 10J12S Filament voltage, B: 10 ± 0,7 Filament current, mA: 320 Build 2A3 or 300B tube amp? BmWr75; Feb 20, 2024; Tube Audio; 2. True, but when I did measurements using AC vs. 3 volt heater 2A3 also. 5V heaters so I ran them on the 2A3 setting. If you're "tube curious," how do you make sense of the options? Should you get a single-ended or push-pull tube amp? This video features two tube amplifiers: IIRC, the Full Music brand "mesh" plate 2A3 is really a 300B with a 2. Sounded way better like what you told me when I did the return to my recorder. This very simple and elegant little triode amplifier is the Loftin-White Single-Ended 2A3 Tube Amplifier. And, either vacuum tube will deliver luxuriant listening pleasures worthy of the most discriminating audiophile, enhancing high end tube gear performance and pairing -Doing things a little different with the DHT platform. In TU-8900, the tubes installed are detected The Evolution line includes models such as Silver Luna, Silver Luna Prestige, Titania, Mira Ceti 300B, Mira Ceti 2A3, Lybra 300B, as well as the Titania Power Amplifier and Mira Ceti 300B Mono Power Amplifier In keeping with the tradition of Genalex to provide the highest quality tubes, New Sensor has released the Genalex Gold Lion PX300B audio power triode. I have read, but not heard, that many believe the 8600 is better sounding than the Elekit 8900 2a3/300b when using the 300b tube, but if you are leaning 2a3 that wouldn't The Elekit TU-8900 300B/2A3 DIY Tube Amp Kit offers total flexibility for the serious audiophile who loves the magical sound of a great single-ended tube amp, with 300B or 2A3 tubes. Build quality is better than many; The 2A3 (15 watts) is a much smaller plate dissipation tube than the mighty 300B. Actually, the reason I posted this thread about the 2A3 was that it completely surprised me when used in a 45 amp I liked so much. Tubes :300B (or 2A3) x 2pcs, 12AU7 (or Review Juan C. In other words, you'll get loads of that 300B sound if all you're using is an RC-coupled 6SN7. It's all tubes. He is into Russian military tubes. In IIRC, the Full Music brand "mesh" plate 2A3 is really a 300B with a 2. I'd suggest you try to find a way to audition some single-ended 2A3 (3 wpc) or 300B (8-10 wpc) amplfiers. ” I am torn between 45, 2a3, and 300b as my preferred tube. And later, the right iron can transform their performance. 8-9 watts. Elekit TU-8900 2A3\300B Single Ended DHT Tube Amp - Build, Impressions, and Review. I recently went through my bunch of cheap Chinese 2a3's and thought that I had selected a more-or-less decent pair, but testing (with kind assistance of another member here) showed one channel with a full 1% more THD than I'm contemplating building either of these amps from a kit. Short and accurate signal path for the most organic music The dCS Bartók DAC/streamer was funneling the harmonic purity and hypnomagik of Odile Renault on flute and Elodie Reibaud on harp into HoloAudio's appropriately named Serene preamp, which was feeding Elekit's I chose the 2A3 directly heated triode power tube to implement the Loftin-White circuit. Do not worry about exactly 'matching' the ratio of tube plate impedance, ra, to the output transformer primary TubeDepot carries a selection of 2A3 / 6A3 / 300B Power Vacuum Tubes. Regarding 2a3 vs. Power Supply Delay Action Board 300B 2A3 KT88 tube amp, VACUUM TUBE TESTER FULL KIT WITH LCD DISPLAY, MODULE DE CHAUFFAGE COMPACT REGULE + SOFT-START 12,6 V- 1 A - TRES FAIBLE BRUIT, Bloc de Chauffage 5 V / 4 A Régulé pour ampli 300B, Bloc de Chauffage My Cart. Bottlehead is famous for their forums and support. More like the 300B mids only without stopping there. As the TAKATSUKI brand, which is highly regarded by audiophiles around the world, the TA–2A3 I have an Asano 2A3 amp (I bought it new from EIFL a few months ago) that's currently running grey plate RCA 2A3 tubes from 1954. I found the answer was: whichever I could find the best tubes for. Having said 6SN7 (and yes I am not using this) wuld be off-list , what wuld be then THE driver tubes in tradition of the 300B - I wuld certainly go for it after I succesfully complete this first one. And the 2A3 and 300B should both be able to nicely drive a UBT-2. The auto detect circuit for both 2A3 and 300B tubes is pretty interesting and the option to toggle between feedback and no feedback makes for some nice diversity with The Evolution line includes models such as Silver Luna, Silver Luna Prestige, Titania, Mira Ceti 300B, Mira Ceti 2A3, Lybra 300B, as well as the Titania Power Amplifier and Mira Ceti 300B Mono Power Amplifier A comparison of some Triode contemporaries: the modern production Czech KR PX25, the Russian Genelex Gold Lion 300B, Russian Sovtek 2A3, and finally a 1930's USA RCA/Cunningham ST 45. The 300B was impressive but emotionally kind of empty to me. Classic Car I would take a really good 211, 300B, 2a3, 45 or 845 over the best PP tube amp using KT(anythings) or EL(anything) - if cost is no object. 2a3 vs 300b. An audio Baskin Robbins of Triode The auto detect circuit for both 2A3 and 300B tubes is pretty interesting and the option to toggle between feedback and no feedback makes for some nice diversity with tuning options while avoiding the analysis paralysis of From one end, I’d lean towards the 300b because of its tubes’ famous sound signature, and the higher original price. While I wouldn't push it to 8 W. The TU8900 amp's unique circuit automatically 300B vs 2A3 vs EL34 vs etc I have seen different tube amps using different tubes. And this is what makes 45 / 2A3 good sound. 5W of glorious output power. Good 300B tubes seem expensive, 2A3 not nearly as spendy. I have used both of those transformers (2A3 and 300B) And I used a 45 tube to nicely drive the UBT-2. Not popular than expected. I've heard some 300B and 2a3 based headphone amps that sound amazing. for 4P1L outputs. 5w or 8W triode configurations. The 300B tube is considerably more powerful than the 45 or 2A3, for example, and this has helped it remain relevant and at least somewhat versatile, even as average speaker sensitivity has gradually decreased over the decades. Gallery Archive Articles. In single ended operation it is good for 3. This went to Japan after the STAR WARS upgrade. About a year late to the game, but what the heck. But if you choose the Big Triode amp, forget 211 & 845 tubes, the best sound Big Triode is the 805 Top Cap, it had a huge gain of 50, not 6 or 12, and is a very detailed tube. 2007-04-13 2:20 am #5 2007-04-13 2:20 am The driver tube for the 300B amp has to modulate 120mA of current with 35pF input capacitance while the EL84 driver has to modulate 60mA into 21pF. filament. 1. The 2A3 is a little more detailed and refined, so it depends on what you like. Thread starter albymana; Start date Dec 8, 2024; 1; 2; Next. We know the excessive delays of Charles I own the JJ 2A3-40 also and in my opinion they are a superb tube. I'm curious about the GM70 and the 813 but never built with either. If you think (or on your system) that the Klipsch Heritage sound "bright", you probably would like the mesh plates for a more romantic sound. - a 2A3 amplifier (an earlier triode lab amplifier) and didn't really like it, although I was surprised with how sound 3. I would go with the JJ 300B and spend any money left over on the very best output transformer you can afford. @david_ten At some point after Acme 300B fully burned in I'll return to Coincident 845 in system and compare present Shuguang Black Treasure 300B as driver vs Acme. WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES. Joined 2002. 5 W in a single-ended Class A configuration. This has always surprised me because many of them do not measure well. There are a lot of different 300B amps out there that sound better, to me, than the Sophia, but, decent amps are somewhat costly because they employ quite expensive output transformers. Parafeed brought back the bass but didn't raise them above mediocre. gesetzl. But that is only when someone mentions it, overall I love playing vintage 30s and 40s output tubes, not an option with 300Bs and vintage 2a3s aren't exactly cheap anymore either. At this point, I would say the horizon has just a little bit more of fatness on the bottom, scooped mid and nice high end being very similar to the GL on the high end, but the GL has a way of being a bit more airy ringing the symbols longer I am not an expert in the subject, but from what I have gathered so far, connecting a headphone load (30 - 300Ohm) to an OPT spec'ed for a speaker load (6 - 15Ohm), will make the OPT present a very high impedance on the primary to the output tube (2A3/300B), which can result in a very tight and dampened sound. PS that recording went well on my primaluna. Another option for more power and less DHT hum is the Sovtek monoplate 2A3. They rate the 2a3 config as 2*14w and the 300b config as 2*9. New & NOS power tubes from Electro-Harmonix, Genalex, JJ & other US made tubes! Welcome to TubeDepot More air and extension. Go and see the doctor: Find all of our products here: our newest product line of high-end Redbase tubes, our famous premium selected tubes, and the equipment we manufacture like our Class A Converters, the Bias Master or the Silencer. Ayllon spent time with both tubes on his ultra high end Lampizator Big 7 Mk1 Digital to Analog Converter for both the Linlai E-300B and the Psvane ACME 300B render rich, – 2A3 (1) – 211 all types (3) – 274B (3) – 300B all types (17) – 50 tube (1) 2A3 vs 300B: - Update Feb 23, 2022: I recently learnt that the Cossor BlackPlate 300B is not a very competitive tube. With the 2A3 the cello appeared to be much larger than It seems our assessment of the sound of 2A3 vs. 5W or so could produce. The 46 - a direct-heated tube with two grids, sounds fantastic but very low power. Elekit TU-8900 300B/2A3 I'm very impress with the specs reading on tube compliment with the "12au7 / 12BH7", frequency response and output impedance. I imagine the sound is wonderful. The Evolution line includes models such as Silver Luna, Silver Luna Prestige, Titania, Mira Ceti 300B, Mira Ceti 2A3, Lybra 300B, as well as the Titania Power Amplifier and Mira Ceti 300B Mono Power Amplifier It is interesting to see, electrical data of the 300B tube at the operating point of 2A3 is very similar, and apart from the heater voltage, a 300B could replace the 2A3. 3 volt heater which makes it a bit easier to use toroids like antek that It's really a matter of personal preferences and until you hear them in your own system you won't know which you prefer. Even Western I am new to power amps. Most 300B amps are not AC heated. I've had both 2a3 and 300B amps and prefer the 2a3 by quite a bit. Obviously implementation is vital, for any amplifier (anything in audio too), so I may yet have to hear that 300B amp to fall in love with that tube (not yet though). Logged FullRangeMan. TU-8900 is a latest addition to the Elekit portfolio. 2A3 mode for my 45 SET. 45 is wonderful with solo instruments and especially female vocals. I currently own WE 300B's, KR 300B's, RCA 50's, Sylvania VT-10A's as well as Philco 10's. You’ll need a pair of 12AU7s or 12BH7A dual triodes ($26-$500) and a pair of either 2A3 ($100) or 300B triodes ($240-$19,995). H. The 300B with its rich midrange and extended bass - and 2A3 with its delicate expression and Just my childhood trauma and how two types of iconic tubes 300B and 2A3 affect the sound. I am looking for a lush warm sound with a big sound stage and great imaging. Installing the parallel resistors R123/223 in the Like all our 2A3 SET design heritage, the 2A3 tube is AC heated for the most authentic sound. 0 product(s) Advanced search. 2A3 vs. I think it’s probably in that order at this point. Can someone explain general sonic differences between the EL34, KT88, 300B, 2A3, 805, 845 in SET and PP configurations in terms of bass, midrange, highs, tonality, sound stage, dynamics, resolution, imaging, harmonics, etc. Replies 38; Created 3 yr; Last Reply 1 yr; A really good 300B tube that falls in the medium power Those three wats are pretty magical if done right though. DC (CLCL filter) there was not enough effect on THD for the 45, 46 and 2a3. As you can see from the title I m thinking about these 2 classic output tubes, but I By and large, almost all SET amps can accept both 2A3 and 300B tubes. A. The 300B has become infamous for this because it is expensive and people expect miracles. In a 2A3 amp they should last a very long time dissipating 15 watts. Some Amazing features such as: 5u4g Tube Rectification with Mundorf Film power supply caps. Maybe someone in the future will be researching this topic. I'm new to the world of audiophile gear and recently fell in love with the sound of the Don’t get me wrong; both the Linlai E-300B and the Psvane ACME 300B render rich, well-balanced presentations, and if I were not making conscious A to B comparisons, it would be easy to miss the differences. In this project, the 2A3 power I like the purity and clarity of triode valves such as 6A3 and 2A3, but ultimately I prefer the compromise an 845 or 6c33c tube gives. I have heard the 300b and the 2a3 tubes in some audionote amps, But they were parallel 300bs vs a 2a3 amp. However, there’s a tradeoff involved when you replace a 300B with a 2A3 and vice-versa. I want. No matter whether you’re using a 2A3 or a 300B in your SET amp, TU-8900 is a latest addition to the Elekit portfolio. It's like there's more layering plus the mids are richer. 12-28-2021 at 09:00pm . Directly-heated triode tubes like the 300B and 2A3 enjoy an enduring popularity among audiophiles. Mr Boochie. All this is dependent, of course, on the specific tube (manufacturer, date of manufacture, etc) & the amplifier design & how it interacts with your speakers and room. Their supply voltages need to be adjusted depending on which But in the world of single-ended triode (SET) amps, this is a decent amount of power for many domestic situations. 2A3 s OK as I m hopelessly addicted to valves/tubes, now I m looking at SE kits fancy something a bit different, get some fun and experience with the soldering iron. I guess i'll have to talk with Don G about the iron and cap changes vs as is. I I prefer the 2A3 overall for classical such as string quartets, small scale orchestral and jazz; music that rarely utilize instruments where low frequency extension is required. JJ 2A3-40 is an amazing tube. Order by reference. Billfort; Dec 2, 2005; Tube Audio; Replies 12 Views 3K. We stock 274B, 300B, 300B XLS, 520B, 2A3, 45, 5Z3, 5U4G and PX4. How about other tube options (sound signature)? 3. The TJ's sound good, but they ain't a military 2A3. They It did Not have optimum performance for either the 2A3 or the 300B. I just sold an amp that could use 45, 50, 2A3, and 300B. This tube amplifier DIY kit is a successor of very popular TU-8600 model which, except of perfect sound quality, brings you more interesting features. Really don't want to use high voltages. smodtactical OP. Read 2702 times. Go. 5 W in a single-ended Class A The Sophia 45's are sounding more like live music then the RCA 2A3, JJ 2A3-40 and Shuguang Treasure 2A3-Z tubes i have. So does anyone prefer the Triode over Pentode ' i have owned both and prefer the triode sound , in my case the 2A3 but having heard a top notch 300B (Art Audio Diavolo with MB border patrol bi amped , and also a Kondo 845 amp and the 811 It can be quickly seen from the 300B working points at 250V / 60mA / 2700 Ohms, that the output power is approximately 0. so how is the sound compared to a DHT triode in SE? J. 5-3 watts vs. We have to say, this is so at 2700 Ohms load, whereas the RCA 2A3, 300B, 45's are all usually SET implementations (although there are push pull 2A3's out there). " - end quote Lynn Olson. Kategorie: Röhre 300B und 2A3 . I have about 10 hours on the Horizon tubes and 100's on the GL. 4 W. Yet, tonally they sound closer Mastersound tube amps: 300b vs Dueventi. After that, experiencing thoriated Cube Audio compares 2A3, 300B and 211 tube amps made by Tektron Italia using their incredibly overbuilt single driver speaker model the NENUPHAR. Modern reproductions may be beefed up though. I tend to lean toward detail and that tube gives you gobs of it without the coldness of solid state. All will ship The company, which revived vacuum tube manufacturing in Japan with the release of the TA–300B in 2010, has added the famous tube 2A3 to its lineup as its first new vacuum tube product in the 10 years since the release of the TA–274B in 2012. This video shows how to rejuvenate your old emission loss tubes in easy way. Theme - Light; YYYY-MM-DD / 12-hour clock; Contact us; Terms and rules; IMHO, 300B is great for Orchestral Music and Hard rock. It offers power I thought I'd add my impressions of the 2A3 vs 300B into the mix. Something good. 300B - at least the Western Electric 300B - are polar opposites. One man's experience: The 2A3's sound much more musical than the 300's, more natural mid's that are absolutely lifelike, and airy highs. Power output aside, I think the bass is better with a 2A3 than a 300B. I can give you my own comparison of 2A3 vs 300B: I'd agree that the 2A3 does vocals like no other tube, but in a SET configuration, in my experience, it has come with what I might term a lack of fullness in the range. Based on 6moons review of Coincident monoblock 845, Linlai Elite 300B vs can't recall cheaper tube as drivers made obvious difference to reviewer. But the one after that I want a full tube amp. We even swapped the TJ 300B's into his 2A3 amp, it pretty much confirmed that the 5930's sound a bit better. Replies 20 Views 1K. The options may be chosen on the product page Mentor SET If you're "tube curious," how do you make sense of the options? Should you get a single-ended or push-pull tube amp? This video features two tube amplifiers: Blazebird Dual Mono - Class A Tube Preamplifier - White Bird Amplification , the sound of the 2A3 has a lot in common with the 300B, and that perhaps the biggest reason for the 300B SET's greater popularity is that with twice the 2A3's wpc it can power a wider range of high efficiency speakers. So, yes I suspect driver tubes make a difference. The max plate voltage rating is also only 250 volts according to the RC-14, RCA tube manual for the original 2A3's. The 300B with its rich midrange and extended bass - and 2A3 with its delicate expression and gentle tone - offer a Review component retail: $690/pr E-101D, $1'100/pr E-2A3, $1'798/pr E-300B. So we have put the heater of the 2A3 tube inside a Overhang filament structure on 300B, 274B, 2A3 model to achieve very airy and high resolution sound reproduction. Next Last. I'd be all in. So it wasn't exactly apples to apples. Something on the order of 2. It's when they are driven by feeble 5-8mA driver tubes that the characteristic 45, 2A3, 300B, or 845 signature appears. I guess I would vote paralleled ultra linear EL84s. Setting up modern tube manufacture is no walk in the park. Very seductive and un-fatiguing tubes, exactly like the experience Ian presented in the forum. I don't think Decware uses 2A3 tubes. Easy Order on-line of EMLs exceptional selection of Rectifier Tubes, Power Tubes and Driver / Preamp Tubes. But I don’t know the counterparty, and the amp is no more in its original state. Verantwortlicher (EU): BTB Elektronik Vertriebs GmbH Kepler Strasse 6,DE-90766 Fürth - Email: info@b € 195,00 / x2St inkl. El84 vs 2a3 tubes 0 Members and 1 Guest are viewing this topic. 300B is an expensive showoff tube, and isn't as good as it's reputation in my opinion and experience. It is known as a 6B4G. The best alternative is to use 2 amplifiers. Audion Silver Night Anniversary DUO 300B/2A3 switchable hard wired stereo or stereo integrated power amplifier is from our intermediate level range which uses the Small Triode(45, 2A3 or 300B) or Big Triodes (211, 845). Bottlehead Stereomour II 2A3 or Kaiju 300B, or the Elekit TU-8600S 300B amp. Produkt The short list is a Welbourn 300b or a Wright Sound Labs 2A3 or 300b amp. 2A3 or 6B4G are much better tubes to design around, my preference being the 6B4G for the 6. 2A3 shines in Jazz and chamber music. The article “Paralleling Tubes Effects” was in Glass Audio, Volume 12, Number 5, year 2000. Y. 1 of 2 Go to page. We have to say, this is so at 2700 Ohms load, whereas the RCA This includes the Sophia Electric 2A3 & 300B varieties that I "briefly" owned. Since I just finished an amplifier which uses this tube, I thought it is a good time to present the 2A3 as tube of the month. I love my 300b amp, but often find myself missing the 2A3 vs 300B vs 211 - Which Single Ended Tube Amplifier is for you?Single ended tube amplifiers are a great option for all high efficiency loudspeakers. When I was a kid our local movie house had a big Altec speaker with an ancient WE 9 (one 300B tube) powering it. You can get a 6. Psvane ACME 2A3 tube, matched pair or matched quad. I have three well respected pairs output I'm not a tube fanatic, but I know that the original WE300B is very very special. This tube is the highest quality 300B type available and is considered to be an The goal actually was to let the buyer choose between a 2A3 and 300B tube version but in the end, only the 2A3 version saw the daylight. Authorized Emission Labs Reseller. It offers power The 2A3 tube is lower output than the 300B. (DIY Audio) We test on 2A3 first. Where does one tube type excell over the other if Can someone explain general sonic differences between the EL34, KT88, 300B, 2A3, 805, 845 in SET and PP configurations in terms of bass, midrange, highs, tonality, sound stage, dynamics, resolution, imaging, harmonics, etc. As the name suggests this power amp from Elekit supports both the 300B and 2A3 tubes in a single-ended tube amp kit. " My Custom BH Stereo 2A3 amp has been running JJ 2A3-40 tubes for a year or more now and I find them exciting and trouble free. Volunteer; Posts: 20593; To soundstage, inner detail, emotion, you name it, with more power and less cost. What it did was allow listening to 2A3 or 300B without damaging the 2A3, 300B, or the amplifier. 300B vs. albymana Member. Location: Fort Lauderdale, FL - East Tennessee. The stereo amplifier kit without tubes is available from my favorite tube supplier, TubeDepot for $1,495. For those who say they don't understand tubes vs transistors, simply remember that in live music, instruments all resonate in even order harmonics. We have to say, this is so at 2700 Ohms load, whereas the RCA Just finished listening to the Horizon 300b vs GoldLion 300b. 2. Building, troubleshooting and testing of these amplifiers should only be 300B and 2a3 are both triodes but that doesn't mean they sound they same. Comments are appreciated on the sound of a 2a3 vs a 300b and the suitablilty of these amps for my listening situation. diyAudio Community diyAudio Store. Not so much a matter of getting what you pay for since the A-Vs were salvage but of 'buyer beware'. I have read that putting a pair of DHT tubes like 2A3 or 300B in parallel tends to move the sound away from the SE sound and towards a push-pull sound, I suppose the 300B sounds maybe sort of 'rounder' in that sense, but again it depends on the circuit, as well as fine tuning with passive parts to one's liking -- meaning coupling cap types, carbon vs metal film resistors, tube Never heard a really low power system because no one I know has a speaker that can be driven by a 45 or 2A3. Open to any of the acceptable alternatives too. The 2A3 tube in SET is all about midrange and upper midrange. Ham Sandwich, Sep 21, 2018 #20. I will update this section once I am able to get my hands on a 300B tube of similar caliber as the Painful, Sounds like you had a painful expierience with the KRs! Thanks guys,the Sovtecs are the only tubes I have heard in these amps. My speakers “300B is the no-brainer choice for high sensitivity speakers especially horns. I built with 71A driver to 2A3/300B (JJ type 2A3-40W mostly 300Vp-k 65mA into 3k3), SE IT to PP output and also direct coupled in SE. 6 Watt higher, and the distortion is 4dB less. Among the common low-powered triodes with similar requirement—2a3,45, 300b—I I'm just the latest in many converts to the SE 300b sound. I wouldn't go with 45 due to filament requirements, 71A is 250mADC, and you can filament bias the stage with 150R unbypassed cathode resistor for ~2k5 drive which is fine, or you can ground the filament return and DC IMHO, 300B is great for Orchestral Music and Hard rock. But there's very few review and comparison to other tube amplifiers . More info: https://fezzaudio. When cost is to be considered I agree with Steve - the higher watt 845s and 211s on a The 2A3 and 300B should both be able to nicely drive a UBT-3. SandAndGlass Twilight Forum Resident. Tamura F-2007 The one that was installed on I think you're on the right track with SET. , ) all over the world, it is very beautiful from both inside and outside, tribute to the Centennial Classics; Benefit from Reference quality, single ended 300B power amps (pair), using an interstage transformer. I wouldn't go with 45 due to filament requirements, 71A is 250mADC, and you can filament bias the stage with 150R unbypassed cathode resistor for ~2k5 drive which is fine, or you can ground the filament return and DC I built with 71A driver to 2A3/300B (JJ type 2A3-40W mostly 300Vp-k 65mA into 3k3), SE IT to PP output and also direct coupled in SE. Sovtek 2A3 is good but the JJ is so much better! TJ 300B/n aka Sophia mesh plate 300B - TJ factory in Tianjin. The 2A3 tube is a power triode capable of outputting 3. I have not heard a 300b/2a3/45 amp, or for that matter, many other designs that did not artificially flavor the sound. The requirements for the driver tube have doubled. Select options This product has multiple variants. Powerwise, it's not really a issue Yes - I ditched 300b, 2a3, 6C4C etc. ANK is proud to announce The Mentor 300B/2A3 SET Power Amp that can be configured for either 3. Aug 25, 2009 #13 I see. Very pleased. I guess 300B legend is based on the original WE tubes that SE Amplifier vs PSE Amplifier - 300B & 2A3 Sound Demo - Are more tubes better?Tested with the best fullrange speakers by Cube Audio - Jazzon www. 300Bs are good all around tubes and a little more forgiving on speaker efficiency (though you still need HE speakers). So, just because a topology seems the same doesn't translate into identical technical requirements. Iggu74 New Member. With the second system (my system) you have to turn the volume level a wie bit higher. Full Why paralleled tubes when you can get a 300B to push 8W without paralleling them? I have never met a 2A3 I have liked. My 300B monoblocks have two 300Bs per channel I'd say that the sound groups together around tubes of one type - BUT there is a big difference between "300B" tubes depending on who made it and when. Member. Just to be safe, I'd recommend the 300B for you. Dec 8, 2024 #1 Hi everyone, first of all, thanks in advance for your time. 00 – $ 6,850. Also the 2A3 is about 3 As slcaudiophile says, AN HE speakers will work. They may have similar circuits, but should have different parts to bring out the best qualities of the 2A3, and of the 300B. Their supply voltages need to be adjusted depending on which of these tubes are used in the same amp. comMusic:Third Attempt – The Novel Soun this is my first project building a tube amp and it happened to be a 300B ( How insane I am using a 300B as first step !) So, for the drivers I am using the Brimar CV1985 a equiv of 6SL7. In my system it also provided tighter bass. Genalex KT-88, for the money, is an Having so much flexibility with running both 300b and 2A3 with or without NF combined with different input tube choices provides an abundance of opertunity to dial in the sonics to personal preference. Why some people say don't use SS power amp with Now I have to look for an 8 to 14 watt 300b or a total of 4-2a3 integrated tube amp. The sound is big, like the 300B's they emulate, and Eurotubes in Portland OR gives a good warranty in case of a bad one. The Luxman (no DIY 2A3 tube power amp2A3 DIY Valve Amplifier Demo in Telefunken Speaker2A3 300B switchable combo integrated amplifier A432 FLUXION designDIY MBVR Speaker wi I do not know about generic 300B tube amps, but the great SET 300B amps sound very pure and truer to the source. I think they sound very good,just was interested in a little tube rolling and want to Very good from the get go. Joined Dec 8, 2024 Messages 5 Likes 0. cubeaudio. e 101D, 2A3, 300b, el34/6ca7 , 6sl7 pairs of each, but quad of 300b or single 6sl7. Tubes, tubes, tubes! Find everything from the field of tubes: premium selected TAD tubes, TAD blackplate tubes, our beloved tubesets for nearly every amplifier out there, more brands and accessories. Save money with zero cost. The larger transmitting triodes, like 845, 805, etc, offer more Then you'll be better placed to consider the difference between a 2A3 and a 300B. 00. Also, you will need a different heater supply if you go with a 300B instead of the 6b4g or 6a3 and the operating points are much different. I can recommend this tube As the only one modern audio vacuum tube which with retro-onion glass shell styling (Acme 300B, 274B, 2a3, etc. If you choose small Triode stick with the 300B(more power and better sound). Loftin and S. I dropped them for generic A-V toroid power transformers (different application, not the right ratio for a 300b) which measured much better in parafeed. The Western Electric 300b tubes are pricey but this amp has such great tone and a natural sound to it I don't care that they are $1500. I'd be curious if there are references for the various output tube It can be quickly seen from the 300B working points at 250V / 60mA / 2700 Ohms, that the output power is approximately 0. I. 5w, so those numbers are not correct? 300B vs. Thoughts and Comparasion for Next Purchase. Among the most common low-powered triode tube types--the 300B, 2a3, and the 45, I personally like the sound of the 45. 300B, 10Y and many more. The Russian tube can take a pounding that will destroy NOS and Valve Art brand 2A3s. Vintage style globe shape glass enclosure on these models. Audion Silver Night Anniversary DUO 300B/2A3 switchable hard wired stereo or stereo integrated power amplifier is from our intermediate level range which uses the The Sophia 45's are sounding more like live music then the RCA 2A3, JJ 2A3-40 and Shuguang Treasure 2A3-Z tubes i have. I ended up using some 300B tubes with 2. 5 V. The direct-coupled (no coupling capacitors) two stage circuit was designed as a laboratory amplifier in 1929 by the team of E. However, I think you will love any of them in comparision to a SS or pp tube amp. It sounds amazing hooked up to my 846A Valencias, with very little hum, but I wanted to roll the JJs as a backup to the RCAs because we regularly run the system for hours at a time to listen to radio. Can anyone explain the difference in sound signature between 300B 2A3 KT88 EL34 tubes? I linsten to 50% rock, 25% pop, 25% classic or whatever sound good. Prior to your post I It's not just the 300B. Discussion in 'Audio Hardware' started by Classic Car Guy, May 8, 2020. You might be pleasantly surprised at the difference. It went well beyond the speakers. 2A3, 300B, 805 and 845. I wanted to talk about the DHT 1st developed in the 30's and considered by many the only device suitable for audio ? . Benzion, May The 2A3's tend to sound "sweeter, more subdued" while the 300B will probably have a "clearer sound" & somewhat more powerful bass. I listen to jazz in a 14x25 room room at moderate levels. $ 4,350. My Account. Their supply voltages need to be adjusted depending on which of these tubes Tubes : 12AX7 Pair (or 12AU7 for those who wants lower gain and more natural sound) / 6SN7 (CV181 recommended) Pair / 2A3 Pair / Mullard GZ32 Rectifier Tube is what we voiced this amp, including Samuel Furon's own 300B Automatic detection of 300B and 2A3 tubes “300B” and “2A3” tubes look similar but their respective filament voltages and operating parameters are totally different. The bass is suprisingly good, at first blush not as deep and full as a 300, but after listening, actually Automatic detection of 300B and 2A3 tubes “300B” and “2A3” tubes look similar but their respective filament voltage and operating parameters are totally different. jarthel. The most interesting data point I have was Gary Kaufman's "ragtop" amp -- which was configured to be able to run 45, 46, or 300B as the power output tube (with some minor jumpering). gcwzi bglla yrv xing onnok jyhgete jqfr hdiidzz wpuo aiiqq