274b vs 5u4g Equipment Forums Never tried the Sophia 274B and the NOS SED 5U4-G. Logged mick wolfe. Sophia Electric Aqua II 274B Rectifier Tube with Live-Like Sonic Performance. Just use 10uF, the 5U4's will last longer that way. " Upgrading rectifers does make a significant difference in sound. It's a 274B, so it probably won't work in all 5U4G amplifiers and has different specifications. Itsjaw, Apr 7, Tubes: Rectifiers - USAF "Mighty" 596 w/ Woo Audio Adapter | Sophia Princess 274B Mesh | KR Audio 274B-HP | Takatsuki TA-274B | Emission Labs 274B | Emission Labs 5U4G | KR Audio 5U4G "Riccardo Kron Anniversary Edition" | 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB | Tung-Sol 5U4G B TUBE FULL WAVE RECTIFIER DOUBLE EML 5U4G Mesh Plate VS. Do you have any opinion on 5U4G Mesh vs. So I am reordering the 274B solid and he is shipping tonight. choosing a selection results in a full page refresh. In my SE84UFO3 monoblocks I used Amperex 5R4GWA rectifiers that are slightly smooth and tight, and most of the time use Sophia Electric Aqua 274B which seem to share the best chacteristics of the Mullard and Amperex--a big 5U4G really I think. They are far and away my 2 favorite rectifiers. Authorized Emission Labs Reseller. Replaces the 5Z3P, 274B and others. A directly heated full-wave shouldered 5U4G by Psvane. We do NOT recommend to use the 274B as a replacement for 5U4G. Both are excellent tubes. I may be being sent some Mundorf 3. Interesting only WE and Takatsuki do not add the calcium oxide "pep" to their valves. 6 products. 81-Monodiode - 274A /274B-Mesh - 80-Mesh. Sophia Electric’s latest Blue Glass 5U4G is a revolutionary product that delivers superior high resolution, wider bandwidth (high-frequency and bass extension), and musicality unmatched by any vintage 5U4 family rectifier tubes. The Aqua II 274B features a number of technical innovations: The Aqua II has a higher current output (max 220ma) compared to the original Aqua 274B (max 180ma), and way more compared to the WE 274B (max 150ma). 8 to 3 amps) WE 422a (filament current 3 amps) WE 274A/B (filament current 2 amps) Takatsuki 274B (filament current 2 amps) Hope that Having said that, My WA6-SE Gen 2's (both of them) have had no issues with any rectifier I've used so far (5U4G, 274B, 596, GZxx, etc. It also is the stock tube that Woo Audio supplies with new amps. 9uF for free, it seems like these would work For those that have the weaker resistor, the WE 274B would be your choice. Reasonably priced. Joined 2007. These are of excellent vintage constructionold type heavy grey plates,1x side D getter,tight base and strong yellow print 54 years old . 5. Will my B+ come up "too fast"? Does it really make any difference at the end of the day? kmaier. The WE 274a and 274b is superior though. The 5U4G is rated for less current draw vs. Thread starter tenderland; Start date 2005-04-28 1:44 am; Status Not open for further replies. 5. There is no any compromise in every procedure, including the material, structure, technology, and sound performance etc. Tubes: Rectifiers - USAF "Mighty" 596 w/ Woo Audio Adapter | Sophia Princess 274B Mesh | KR Audio 274B-HP | Takatsuki TA-274B | Emission Labs 274B | Emission Labs 5U4G | KR Audio 5U4G "Riccardo Kron Anniversary Edition" | 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB | Tung-Sol 5U4G B TUBE FULL WAVE RECTIFIER DOUBLE Der letzte Versandtag im Jahr 2024 ist der 20. 82; View count： 14040; Rank: Quantity： Total： Available Options. Leave your E-mail Address and we will inform you when this *1* Emission Labs / 5U4G *2* Sophia Electric / Aqua II 274B *3* Sophia Electric / Aqua 274B *4* Linlai / Global 5U4G *5* Linlai / Global E-274B *6* RCA / NOS 5AS4A Any other rectifiers I should consider? Any one of these I should not? There's a bias for currently manufactured tubes as I need a pair of those, so they should be as matched as possible. Output tubes. Join the EMISSIONLABS 5U4G – Svetlana coke bottle NOS. 6FG7/6FQ7 + GZ34 / 6F8G + GZ34 2. 5U4G is glass- shell eight- feet That is to say, there is as much of a difference between, say, RCA 5U4G and Ken-Rad 5U4G, as there is between the Ken-Rad 5U4G and Sylvania 5U4GB. Search . It's worth trying a few. Similar to 274B and 5Z3P, they can be used Sophia's 274B are $160 to $175 each where the EML 5U4G or 274B are $320 Each. 68 The Western Electric 274B is similar to the 5U4G in specifications although it uses only 2A of filament current. Jun 20, 2017. Member. Your Position: Home > Shuguang Tube > Rectifier > Shuguang 274B (5Z3P 5U4G) Vacuum Tube. cathode sleeve). ). Service/Help Shop / Sales / Order processing Product Q / Wholesale / OEM inquire Contact Amp-Service / technical support Warranty / Returns Downloads FAQ Jobs Magazin Menu Search. I have been rolling other tubes to compliment it. Fred Volz, Emotive Audio. However, when the power supply capacitor is higher than 8 uF the long plate of the WE274B sparks, which forced Western Electric to limit the design requirement to 4 But we experimented with KR 274b, 5 u4g, and EML mesh 5u4g . I'm inclined to think I had a bad 274 that was Sophia's 274B are $160 to $175 each where the EML 5U4G or 274B are $320 Each. If they can take the 5U4G is glass- shell, 8-pin socket, directly heated full-wave rectifier tube，5U4G is very similar with 274B and 5Z3P, which can be Service/Help Shop / Sales / Order processing Product Q / Wholesale / OEM inquire Contact Amp-Service / technical support Warranty / Returns Downloads FAQ Jobs Magazin Menu Search. 0. Western Electric Bell System, the real McCoy! Simply one of the best recifiers ever made, even Tubes: Rectifiers - USAF "Mighty" 596 w/ Woo Audio Adapter | Sophia Princess 274B Mesh | KR Audio 274B-HP | Takatsuki TA-274B | Emission Labs 274B | Emission Labs 5U4G | KR Audio 5U4G "Riccardo Kron Anniversary Edition" | 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB | Tung-Sol 5U4G B TUBE FULL WAVE RECTIFIER DOUBLE 1pc PSVANE 5U4G Rectifier Tube electron tube replace 274 274B 5z3p Vacuum tubes. This MK II version of Aqua 274B tube is the ultimate 274B from Sophia Electric. The Sophia Electric Aqua 274B rectifiers were a revelation in performance for my vintage McIntosh Preferred Series 274B The Preferred Series 274B tube is a full-wave rectifier that is very similar to the classic 5U4G. Picked up a short 5U4G tube the other day--anyone ever seen one like this? EastPoint; Jun 19, 2017; Tube Audio; Replies 7 Views 507. mkane Lunatic Member. Sort by. QUANTITY. mtemur Forum Resident. - alle bis zum 20. Factory tested . 300B - 300B-mesh - 300B-XLS - 320B-XLS. BTW, the 5U4G is very similar to the 274B and 5Z3P, although, from what I can gather, a piece of equipment which, for example, uses a 274B, cannot always be replaced with a 5U4G (or the 5U3C Russian equivalent User Experiences. Stereo 300B tube amplifier needs to have one 274B rectifier tube per Buy 1pc PSVANE 5U4G Rectifier Tube electron tube replace 274 274B 5z3p Vacuum tubes: Tubes - Amazon. We have one piece in stock. Share Feb 14, 2023 at 2:54 PM. This product has been discontinued permanently: For Immediate News Release: Grant Fidelity will discontinue the entire Psvane line as of 8pm 1-274B, 2-5U4G, 2-5U4GB, 5-5V4GA and just one tube amp which uses a tube rectifier. 04 Psvane ACME 274B Valve - £563. Most commonly used in guitar tube amps and home audio tube amps. I believe an RCA 5U4G is worth exploring. NOS Tubes VS. 5u4g vs 5u4gb. Quantity Add article. AVAILABILITY: 1 DAY. Mar 29, 2022; Tube Audio; Replies 10 Views 4K. Quite probably the "aggressive hit" it takes out is a Interestingly, I bought (new, but not in original box) a Sovtek 5U4G awhile back. wooaudio. Octal, IO) K8A, USA 1935 and Power-supply shown. 1 Jehuty. Much better than KR 274b, KR5u4G, Svetlana black plate 5U4G, and the small one 5C3S that was mentioned in Horizon thread. NO Mullard 5U4G. And of course they have a whole range of WE274B replica, as well as just regular 274B and 5U4G. 5U4G is glass- shell eight- feet directly heated full-wave rectifier tube，5U4G is very similar with 274B and 5Z3P, which can be replaced by each other. Your Sophia Electric™ mesh plate 274B is the best rectifier tube I have ever heard including the actual Western Rectifier tube: Psvane 274B-T2 Psvane Reference T-series Mark 2 274B is very close in all spec details to 5U4G, 5Z3P and even 5Z3 vs 5U4G rectifier question. Is it Bad Rectifier Tube 5U4G Acring at startup? megasat16; Feb 18, 2014; 5U4G TUNG-SOL U52 VT-244 CV1071 CV841 (274B sub) DOUBLE HALF WAVE RECTIFIER VALVE - FULL WAVE - POWER STAGE 100% OK; 5U4G TUNG-SOL U52 VT-244 CV1071 CV841 (274B sub) DOUBLE HALF WAVE RECTIFIER VALVE - FULL WAVE - POWER STAGE 100% OK. Pricing: Option 1: $299. 3. Test data . Each power Rebiasing of your power tubes is absolutely required. WE never made a pierced plate 274B just as they never made a pierced plate 300B, but the Chinese know that these plates look attractive and so they cater to our modern sence of aesthetics. Share Dec 4, 2009 at 2:26 PM Tube 5U4G replaces 274B 5Z3P tube rectifier tube original precision matching 5U4G is an eight-pin direct-heated full-wave rectifier tube with a glass shell. Please always check with your amplifier about tube substitution in case you accidentally damage your precious amplifier or the newly acquired tube. × Modal title. jpg. Mesh - 5U4G-Mesh - 5Z3-Mesh. There is a new 274B that is very well regarded, but the price is off the charts. For what it is worth, I prefer the Ken-Rad 5U4G, for its superior dynamic clarity. This position shouldn´t affect the sound much and I don´t think it does. 1 - 5 Tage. I am based in Europe. jrenkin. A quad of Modern 274B rectifiers. Sophia Electric Aqua II 274B Rectifier Tube with Live-Like Sonic Performance Here are two modern 5U4G tubes, a Sovtek and a Ruby. Psvane WE274B: This product has been discontinued permanently: For Immediate News Release: Grant Fidelity will discontinue the entire Psvane line as of 8pm MST, Feb 7th, 2021 . Forums. 5A of current. Quote: grmnasasin0227 said: Sorry to bump but I feel the next comparison that needs to be drawn is between EML tubes themselves. From Jeff Day's Positive Feedback review: ". If your prefered level is in between steps, the Sylvanias might present a problem. Our PS-274B tube is a beautiful large coke bottle shaped rectifier tube with large A 274B cannot be used in place of a 5U4g or 5AR4 because of the limits on the value of the power supply capacitor that has to be used with a 274B. with Sophia Electric 91-01 300B mono-block amplifiers First impressions on Aqua 274B and Classic 300B. " We have received so many inquires lately from customers asking us to help them to make a choice between the two tube brands out of China. Another important point: the 5U4 has a 3A filament vs a 2A filament in the 274B. com FREE DELIVERY possible on eligible purchases. 5A which is lower than the 5U4G/GB or 5Z4P which would with replacing some 5U4G' rectifier's for modern 274B'sThe traditional WE 274B's had a low Nov 24, 2024 Can 5AR4 be replaced by 5U4G or 274B? amp is used 5AR4/GZ34,can I replace with 5U4G or 274B. the 5U4G (VT244). I have a long history with the Sophia Electric Aqua Um, I wouldn't put a switch at full B+. Direct-voltage output characteristics as functions of the direct load current Psvane 274B 1:1 replica My wallet is now creaking under the strain!!!! I still refuse to purchase the Takatsuki 274B still way to expensive for a pair. 76 JJ Electronic 5U4GB - £19. I also prefer Psvane ACME 274B to Psvane WE 274B Replica. The 422A is a completely unique plate structure design and looks nothing like the 5U4G's where it is a substitute for. So far it is the best rectifier that I have rolled. Share Dec 4, 2009 at 2:26 PM For those that have the weaker resistor, the WE 274B would be your choice. This is absolutely not one of, but just the best rectifier tube you've ever heard! Our product 274B is the only one in the The Sophia Electric claims to be "for those who want 5U4G rectifier tube without missing 274B magic. Jehuty. This Aqua 274B can directly replace 5U4G in most amplifiers with great sonic improvement. Similar to 274B and 5Z3P, they can be used EML 5U4G Mesh Plate VS. The Weston Tempest (old KT88/ class A version) currently use 5R4W. 5U4G Russian - £20. Joined Aug 21, 2013 Posts 11,066 Likes 16,549 Location Down at Dino's Bar & 原装 德国 Emission Labs 274B 整流电子管 直代5U4. 274B Mesh (both EML)? What I have heard of 5U4G tubes has not impressed me in general, especially their uncontrolled bottom end, but I imagine the EML Meshplate is a different animal and can't really be compared to run of the mill 5U4 types. Lieferzeit: ca. Versandkosten . There are several issues with that: The 274B has lower current capability than the 5U4G and lower peak currents which results in smaller allowed input capacitance after the rectifier. M. Electrically these will replace a 5U4GB but they are larger and may not fit in some amplifiers. (Direct filament vs. 95 Design Considerations for a 5U4G or 274B Tube Power Supply, using a Choke. Location: Grit City, USA. Feb 5, 2023. I have been having fun with your Psvane 274B replica. 274B is very similar with 5U4G and 5Z3P, which can be replaced by each other in many cases. " The Aqua II has a lower impedance than any other 274B ever made, thus higher efficiency in converting AC into DC. Maybe I'm lucky. I first wrote about the Sophia Electric Aqua 274B rectifier in Issue 93 of Positive Feedback . All good Kirk . Equipment Forums. JBL LE15A + 2441 AZ4-Mesh - RGN2504. It benefits from Sophia Electric Aqua 274B Rectifier. It has a higher resolution – akin to watching 8K video instead of 1080 – and even more live-performance-like sound. I Treble is smooth and midrange is warm yet not overly colored. Sophia Princess 274B Mesh Plate WA22 Home. The 45 EVO is very sensitive to rectifier choice, and using anything other than these high-quality 274B rectifiers sounded dreadful in comparison. 2005-04-28 1:44 am #1 2005-04-28 1:44 am #1 I am almost ready to power up my amp but after reading some threads I decided to ditch the Sovtek 5u4g , I have a sylvania 5u4gb I would like to use , any My favourite is still Psvane ACME 274B, with Elite 274B being second. My account Shopping cart 0 €0. B. Late in the afternoon, the Psvane Acme 274B rectifier arrived. HenryS and jonwoody like this. I hear more detail, the soundstage is wider and more layered. I’ve always enjoyed visiting with Richard and Sue at Sophia Electric about their vacuum tubes and amplifiers, so when Dr. Brimar + Gold 8Pin Octal Vacuum Tube Socket Saver KT88 EL34 274B 5U4G 6SN7 KT66 6L6 6V6 5881 6550 CV181 6SL7 GZ34 6CA7 5AR4 KT100 KT120. Historically, WE 274B was designed for the WE300B amp, the current NOS WE 274B is $1000 each unit (see Vacuum Tube Valley magazin . 5AR4 / GZ34 vs. Can't really knock it as it was the best rectifier I had at one point. 6FG7/6FQ7 + 5AS4 4. While the 274B allows 4uF load capacitance, the 5U4 can handle 10 times that, 40uF. 274B: NO, DON’T DO IT! A 5AR4/GZ34 requires 1. I´m telling myself it sounds a bit rounder, but I´d have to make a blind test with the stock tube. The Takatsuki 274B. 60 Psvane MK2 T-Series 274B Valve, Premium Grade, single valve - £140. i had over 50 rectifiers , but never had chance to test WE 274B, can you share impression of WE274B vs WE422A and metal base GZ34 pre 55 4- tungsol 5U4G the one with plate top getter, never listen to mullard 5U4G ( i think you have few ) 5- CV717/5R4GY brimar with duo 45 DEG angle is BEST This Aqua 274B can directly replace 5U4G in most amplifiers with great sonic improvement. Zoom in picture. ” It is still an expensive tube to try at $199, but I am curious to hear any Tubes: Rectifiers - USAF "Mighty" 596 w/ Woo Audio Adapter | Sophia Princess 274B Mesh | KR Audio 274B-HP | Takatsuki TA-274B | Emission Labs 274B | Emission Labs 5U4G | KR Audio 5U4G "Riccardo Kron Anniversary Edition" | 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB | Tung-Sol 5U4G B TUBE FULL WAVE RECTIFIER DOUBLE Audition recordings: Zero Distortion Link; Reference Components: Zero Distortion Link; Own: Lampi GG, Allaerts, DaVa field coil reference with tube PSU, One pair of Altec 802g drivers for the top half of the Altec 817 speaker, with two pairs of Altec 515B 15 inch woofers. My So please kindly send me a PayPal invoice for another set Aqua 274B tubes. But I wanted to mention one First, we describe it as far more musical than any other 274B or 5U4G tubes ever made. Was a challenge to stay with it during its burn in, channel in-balance, dry and course sound all have cleared up Interesting that the design of the Takatsuki 274B appears almost identical to the original WE274B, right down to the number, size and position of the perforations on the back of each plate (5). . 5U4GB are suited to currents up to 275mA at 450V. This limitation prevented the 274B rectifier tubes from being used in a wide variety of applications, both in vintage times and today, as most modern equipment was designed with up to 47 uF capacitors as the first capacitor in the power supply so Rectifier tube: Psvane 274B-T2 Psvane Reference T-series Mark 2 274B is very close in all spec details to 5U4G, 5Z3P and even 5AR4/GZ34. But that's what I want! I want to hear from you, which 5U4G YOU think sounds the best. It is recommended by Western Electric for their 124B amp when a WE 274B tube is not available. I came up with the plan to roll in brighter drivers. 5A Limit Ratings Anode peak reverse voltage : 1550V Anodic current peak : 750mA Recommended work status Anode supply voltage: 2 × 500V Each arm impedance: 75Ω Load impedance: 2000Ω The rectifier location is compatible with 5U4G, 5AR4, 5Y3GT, and some 274B. " In other words, I doubt its really a proper 5U4G. 274B Linlai black Plate tube 2-Wege Röhrengleichrichter. Common tube rectifiers developed in the 1930s and 1940s such as USA types 5U4, 5R4, 5V3, WECO 274B etc, and U. For those that have the weaker resistor, the WE 274B would be your choice. Post #2,485 of 2,879 Monsterzero Headphoneus Supremus. Post #36 of 38 adamrut New Head-Fier. But even so, the 5Z3 is electrically identical to the 5U4G, except for the base. saturdayboy, Agitater, BKphoto and 1 other person like this. 9 Products . Replaced it with my old generic tube, what a difference. , Bruxelles, Belgium (Mazda) Notes from correspondence with Gibosi So Mullard didn't make it. 520B - 1605 - 52B. I've got my KT88 home-built amp sounding magnificent, properly biased- although waiting on resistors of The good 5U4G's are never harsh, and something like RCA coke-bottle top-getter 5U4G sounds far preferable to solid-plate Sophia 274B IME. Reviewed by Tone Audio (Issue 2) See User Reviews. / zzgl. halongaudiophile likes this. However, there ARE two great British 5U4G and I have several of each on hand and they are NOT for sale! First is the much-revered GEC U52: The other great one is the 1940's/50's Brimar 5U4G: And if you REALLY wanna spend some SERIOUS cash on a pair of 5U4G types, then you have to get yourself a pair of Western Elecric 274B Rank most often combo I use right now with PERFECT CD and HD650: 1. Definitely a Our product 274B is the only one in the world which completely reproduces the engraved Western Electric 274B of 1940s. Some of these are bad-ass tubes. Example, how do I know I deal with a genuine Sylvania 274B when there is no marking on the glass and on the base itself. Headphone Amps (full-size) the rectifier in my Dac (lampizator Dac 4 gen. But the actual limiting factor is not just this cap value but the steady state peak plate current the tube can handle. All(3) Pic review(0) Additional review(0) Local review(0) 5 5U4G 5AR4 WE 274B, Western Electric 274B, Shuguang 274B They are working perfectly in parallel and the sound is just as gorgeous as the appearance of them. As far as mesh 274B's, they'll work for low-power applications, but they have far lower current rating than solid-plates, so don't buy them for your 300B amps, for example. Currently I am trying a Brimar KB/FE 5Z4GY (CV1863) that I got from the UK after a postal strike slowed down shipping quite a bit. Which it did however it went too dark (Really something for me to say too dark). AdamAnt316. Filtered by: Clear All. 95 There was a blacker background using the Glenn adapter on the WA22. Customer Reviews (3) 5. Submit. ga('ec:addProduct', { 'id': 'PS-WE274B', 'name': 'WE274B Psvane WE-Replica Series', 'category': 'Rectifier tubes', 'brand': 'Psvane & Treasure Audio Tubes', 'variant Tubes: Rectifiers - USAF "Mighty" 596 w/ Woo Audio Adapter | Sophia Princess 274B Mesh | KR Audio 274B-HP | Takatsuki TA-274B | Emission Labs 274B | Emission Labs 5U4G | KR Audio 5U4G "Riccardo Kron Anniversary Edition" | 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB | Tung-Sol 5U4G B TUBE FULL WAVE RECTIFIER DOUBLE The Shuguang 5Z3P-J, is basically a 5U4G. Feb 25, 2016 #9 As do I, 10 in all, but just 2 5r's. 5U4G is glass- shell eight- feet directly heated full-wave rectifier tube，5U4G is very similar with 274B The Aqua II 274B version looks a lot different than the original Aqua 274B. First, we describe it as far more musical than any other 274B or 5U4G tubes ever made. What's the difference between the 5R4W and the more popular 5U4G, 5AR4? I heard from tube (shop) keepers that if the amp uses 5R4W, the 5U4G and 5AR4 tubes will be compatible. 6k Region: Australia Location: Zanarkand Posted March 25, 2023. 17. 4). com It is not a plug-in for 274's or early 5U4G's because their bases are different even though the 422A will work fine with a base converter. Miniwatt 5AR4 - Made in Sittard Holland. NOS 5U4G / 5AS4 Rectifier Vacuum Tube No Reviews yet. The Aqua 274B rectifier is a beautiful sounding tube period! I rolled that one I have been using a Sophia Aqua 274B rectifier which was designed to handle a larger first capacitor than a normal 274B. While I have not tried modern production tubes "Compared to the industry standard rectifier tube, namely RCA 5U4G tube, the 274B offers much lower power supply impedance; thus it has a better resolution and high frequency extension. Toggle signature. But, what's Der letzte Versandtag im Jahr 2024 ist der 20. "Chernobyl"). 440. View attachment 100452. I was suprised to see the construction to be like a Sovtek 2A3 without a grid. I 玉転がしが醍醐味. Radio tubes are valves. This limitation prevented the 274B rectifier tubes from being used in a wide variety of applications, both in vintage times and today, as most modern equipment was designed with up to 47 uF capacitors as the first capacitor in the power supply so 5V4 is rated for less current draw than 5AR4. So is the Sovtek "5U4G" not a 5U4G (since it is supposedly a substitute for a 5U4GB), and can I get away with it in my 5G9 build (which has a 40uF first filter stage followed by a choke)? Or is the Emission Labs 5U4G another beastie? Or should I be filtering the Sovtek 5U4G the way that Emission Labs suggest filtering their 5U4G? Ahh yes, 4uF is recommended so that users can always swap between 274B and 5U4G. Description Related · · · · Exploring Baosity's 274B 5Z3PJ 5U4G Vacuum Tube for High-Quality Audio Latest Price & AMZN link here https://bit. Posted by mc1b (A) on December 17, oh, and btw i asked if a 274b could be used, and they (dared) advised against. It has a higher resolution 274B Western Electric Vacuum Tube High Fidelity Characteristics The current-voltage characteristic of a single diode unit Of the 274B tube Vs shown in figure 3. A. いきなり、記号ばかりでごめんなさい。。(^_^; あこがれの真空管アンプを購入してまもなく真空管を替えてみた(もうかよ。整流管を 5u4g (右)から 274b (左)に交換しました。 というのは、許容範囲といえばギリギリ許容範囲なんだが、110vのところ、昇圧トランスで120vになって I may follow up on your suggestion of the Phillips 5R4GYS. Also TAD 4003, One-day-to-build Altec 817 dual woofer Front loaded horn (FLH) Analog shortlist: I like that Mullard in my CSP3 a lot--I have one that took quite some time to bloom. The analogy is, that 5Y3 is to 5V4, as 5U4/GB is to 5AR4. com 274B is very similar with 5U4G and 5Z3P, which can be replaced by each other in many cases. This current draw makes it acceptable for many amps originally designed for a 5AR4/GZ34 tube. Jump to Latest tenderland. Each. 2008-09-07 8:20 pm #2 2008-09-07 8:20 pm #2 You're correct on both counts and yes, the B+ will come up before the input "The 274B is direct heating tube. thanks in advance for any and all replies! happy holidays! This post is made possible by the generous support of people like you and our sponsors: EML 5U4G Mesh Plate VS. "The rectifier location is compatible with 5U4G, 5AR4, 5Y3GT, and some 274B. The whole frequency range is more controlled and with more exciting dynamics and illumination of timbre (more complex and easily identifiable signatures to pianos, horns, strings, etc. The coke bottle RCA black plate and GE 5-rib skinny 5u4g have been exceptional in my Melody Pure Black 101 pre, in Quad amps and in my guitar amps where appropriate. I don't have a Tremoverb, though. Collapse. From what I've read, it sometimes depends on the layout of the circuit - and possibly some other factors - so be careful. new posts. Thank you and greetings Luigi from Italy Sophia Electric Aqua 274B rectifier tube. I have no experience in swapping them. Prev Next Shuguang 274B (5Z3P 5U4G) Vacuum Tube . 0) power supply for my Modwright -Sony 5400es SCD player, but the new Sophia Electric blue 274B, which is a drop-in replacement for a 5U4G (and subsitutes) is the best rectifier I have ever heard in the PS 9. The 274B is a more traditional looking tube and has a plate structure very similar to the 5R4GY RCA WW2 era double bottom getter tubes. Reference N15U4GTSW. ; Option 2: $249. 5U4G (44v drop) has a smaller voltage drop compared to 5U4GB (50v drop), so you amp is running at higher voltage. So I guess its a coin flip. × Keep me informed Unfortunately, this product is currently sold out. Yes, the rectifier can/will have an effect on sonics. MORE IN STOCK! Sweet original WE 274B yellow label base type tubes. However, it is kind of fun trying the NOS tubes. The indirect heating 5AR4 may turn on slower, however, people who buy 274B is for its superior sonic performance. 71 Mesa Boogie 5U4G - £39. Always check the new B+ voltage against the maximum ratings of the capacitors. 2-Wege Röhrengleichrichter Type 274B-kann für 274A verwendet Preferred Series 274B The Preferred Series 274B tube is a full-wave rectifier that is very similar to the classic 5U4G. 300B – Elrog 300B. 52 Mesa Boogie 5U4GB - £48. Also, adapters to allow the use of 5Z3 in a 5U4G socket are easy to find. KR Audio Tube 274B/A 5U4G € 682,50 Price include 21% VAT Price exclude VAT € 564,05. Order Code: AM000039; Brand: Shuguang; Market price: $18. 5A Limit Ratings Anode peak reverse voltage : 1550V Anodic current peak : 750mA Recommended work status Anode supply voltage: 2 × 500V Each arm impedance: 75Ω Load impedance: 2000Ω A Svetlana 5µ3C black plates, presented as the russian version of the 5U4G? however, if the 5U4G as a first capacitor limit of 40uf, the 5µ3C, like the 5Z3P has a limit of only 4uf (bad) and a nominal 230mA DC current output (good). I go back and forth between the 422a and WE 274b on my Stratus. 0 - better than EML, Phillips 5R4GYS, 1940's RCA and Tung Sol, CEC, Mullard GZ32 5V4, etc. 00; Member Price： $17. So here is a summary of our take – OBJECTIVELY: – 274B (3) – 300B all types (17) – 50 tube (1) – 6CA7/EL34 all types (9) – 6SL7 / 6N9P (1) – 6SN7 / CV181 (14) – 845 all types (15) The 274B and 5U4G--how do they compare against each other? Share Sep 11, 2011 at 9:53 PM. The 5U4. 99 per Princess 274B mesh plate tube with one year warranty. Said it I would prefer NOS 5U4G 1940/50, but no Sylvanias 1970s. comemail: info@wooaudio. Once the mistakes are made, it is often impossible to localize them in the power supply, and you'll be looking everywhere at the wrong place, and not find where the hum It does sound better than the 5U4GB and than most of the Chinese/Russian new production tubes. Last Update: Description Many mistakes are made with the power supply, causing the amplifier to hum. Cancel OK. Close search. Subscriber . the indirectly heated cathode of the 5AR4. After reading a bit about all 300Bs I came to the conclusion to invest here. Search titles only By: Exploring Baosity's 274B 5Z3PJ 5U4G Vacuum Tube for High-Quality Audio Latest Price & AMZN link here https://bit. The 5U4 rectifier tube is also known by the equivalent part numbers 5U4G, 5U4GA, 5U4GB or 5AS4. A must have for anything that uses a 5U4G. Tax included Excellent and enough . This 274B vacuum tube's filament draws 2. 5A which is lower than the 5U4G/GB or 5Z4P which would Collection: 274B / 5U4G /5Z3PA Rectifier Tubes Filter by. However, the Primaluna manual lists compatible tubes as: GZ34, CV1377, 5V4G, 5T4, 5Y3 and Upscale Audio also list the Philips 5R4GYS. Too much heat. ; Feedback from Mr. Full Member; But we experimented with KR 274b, 5 u4g, and EML mesh 5u4g . Every musical instrument and voice Dubstep Girl's Massive 5AR4/5R4/5U4G Rectifier Review/Comparison! (Rectifer Tube Rolling thread) Home. The 274B and 5U4G--how do they compare against 5u4g：声音雄壮、开阔、透明、有劲，频率响应够宽。 5ar4：声音清楚，细节较多，频率响应够宽，但是声音较薄，韵味较少。 cv378：声音清楚、有韵，频率响应够宽，但是没有5u4g的声音雄厚。 5u4g：比5ar4有韵，但分辨率没有5y3，低音较松。 with replacing some 5U4G' rectifier's for modern 274B'sThe traditional WE 274B's had a low Nov 24, 2024 Can 5AR4 be replaced by 5U4G or 274B? amp is used 5AR4/GZ34,can I replace with 5U4G or 274B. It can NOT How can you distinguish between a 5U4G (vt244) tube and a 274B. Hom_zui Advanced Member. I favor these over every 5U4 varient except 274B! If you can use 5Z3 I also like early Cunningham and Sylvania green leaf -- still the 422A is simply in a much higher league! -- you full wave rectifier tube, beautiful ST-shape bulb and black base 5U4G (=5Ц3C / 5Z3S) made at the Svetlana factory St. I haven’t tried any other 5u4g but I should get my Acme 274b I believe an RCA 5U4G is worth exploring. Each rectifier change will also make audible differences in the sound and performance of the amplifier. Why don't you reach out to the builder? I'd like to try the new ACME 274B tubes in place of the current 5U4G tubes in my Line Magnetic 210IA amplifier IF the former is compatible with the latter. 50. Sylvania also makes almost similar looking rectifiers, e. Considering I couldn't hear much of a difference between the 53KU and the WE 274A/B I don't think I'll ever purchase one of Looking to try different rectifier tubes. Tubes Menu; Tubes. gesetzl. Lassen Sie die Finger von waghalsigen Tauschaktionen mit zweifelhaftem ‘Altglas’! Hier kommt eine weitere erstklassige Replik von Takatsuki‚ frisch aus Japan. Takatsuki 274B – Ein neuer Star am Röhrenhimmel. Shuguang 274B (filament current 3 amps) (Optional) EML 5U4G (filament current 3 amps) Other tubes mentioned in Wyan's post just above: 5Z4 (filament current 2 amps) Cossor 53KU (filament current apparently 2. Oct 25, 2005 Aural Thrills 274B phono pre. Why don't you The Chinese 274B is a 5U4G with "274B" stamped on it for marketing reasons. It´s still breaking in and changed its sound significantly over the last 274B = 5U4G = 5U4GB?? Dave_in_Va. Time. Chinese Psvane WE274B. So here is a summary of our take – OBJECTIVELY: – 274B (3) – 300B all types (17) – 50 tube (1) – 6CA7/EL34 all types (9) – 6SL7 / 6N9P (1) – 6SN7 / CV181 (14) – 845 all types (15) Buy 1pc PSVANE 5U4G Rectifier Tube electron tube replace 274 274B 5z3p Vacuum tubes: Tubes - Amazon. Pairs of so closely matched-date 422A's are somewhat rare to see, and plates are matched as well -- according to both calibrated testers (see Exhibit B & C) making this set a superior buy -- they'll sell quickly for this reason. It benefits from advanced ceramics and anode technology that minimize conductivity issues and thermal stress, enhancing sound purity and operational My favourite is still Psvane ACME 274B, with Elite 274B being second. In 2016, Sophia Electric released the revolutionary blue glass Aqua 274B that lifted the capacitance limitation (above), broadening the 274B market to be almost fully interchangeable with a 5U4G. BTW, the 5U4G is very similar to the 274B and 5Z3P, although, from what I can gather, a piece of equipment which, for example, uses a 274B, cannot always be replaced with a 5U4G (or the 5U3C Russian equivalent). I haven't looked closely at the inner structure of the Aqua II 274B yet, and it is a little hard to see through the blue glass. Kategorie: Gleichrichterröhre 5U4 . All from verified purchases. The voltage is measured between the plate and a center tap on the filament transformer. 54 Electro Harmonix 5U4GB - £29. 274B is very similar with 5U4G and 5Z3P, Quả 274b mà cắm vào vị trí zin là 5u4g có ổn không các bác ơi, có phải chỉnh chọt gì không, nếu mà phải ra thợ chỉnh thì khi cắm lại 5u4g lại phải vác ra thợ chỉnh? tuanhcm, 16/8/23 #4. J. Feb 26, 2012 #5 I've always been told that the ST70 is However, instead of an octal base, these have a 4-pin UX base. Ethernet: Netgear Orbi>Network Acoustics ENO RJ/E, > SOtM SNH-10G> Network Acoustics MUON RJ/E > Network Acoustics RUBICON switch> Network Acoustics MUON RJ/E > Antipodes K40 > Nordost Valhalla 2 KR Audio Tube 274B/A 5U4G. I suggest sticking to ONLY gz34/5ar4's in the 70 using it's original PT that is. 95 . 99 per Princess 274B mesh plate tube with 30 days warranty. We stock 274B, 300B, 300B XLS, 520B, 2A3, 45, 5Z3, 5U4G and PX4. 2A3-S - 2A3-Mesh - 300B 2. Previous template Next. Page of 1. Attachments. There are both my pre and phono stage utilize 5u4 rectifiers and have recently gotten a hold of some The big difference is the 5U4G filament draws over 50% more than the A5R4. GB has a bit more max current capability. One more thing to add: We discuss a bit here about the capacitor input value because if it's higher than the maximum recommended value Upgrading rectifers does make a significant difference in sound. Since a 274B is a curved or ST shaped envelope, it may touch the capacitor can which isn't good. 'Mullard' 5U4G (Mullard never made any 5U4G so this a masquerade) Mullard GZ34 - L1J L = M. The Sophia blue 274B has bested all of them (including the Phillips metal base 5AR4) except the rare, legendary, and expensive GEC/Marconi/Osram U52 5U4G (which I have several My experience is similar in that I know nothing of the 274b, and it is important to make sure the 5AR4 and 5U4 can be used in the same circuit. 00 * New Anyway, not to worry, as I found (by sheer luck), exactly the same thing about this tube. 45 - 45-B-45-mesh - 45-Globe. X. The glass bulb has a different shape, and the glass is a deeper blue in color. 9A filament current. tubeswell. The RK 5u4g is excellent indeed. All Time Today Last Week Last Month. 274B Western Electric, yellow label base, ST shape, NOS. Black Woo Audio WA6-SE Gen 2 w/ Brimar 5Z4GY (A. Related items. Die japanische Elektronikschmiede Takatsuki, normalerweise ein Großsortimenter in puncto moderner Elektronik, baut so ganz nebenbei Eight-foot glass enclosure full wave rectifier direct thermal, and 5U4G, 5Z3P similar, can be used interchangeably. Notes from The Valve Art 274B looks just like a 5U4, but the EML 274B mesh plate is another animal altogether. I personally never had good luck with Russian and Chinese tubes. The 274B. To fully utilize its benefits, it may require first stage capacitor (capacitor input) to be less than 10MFD, or would shorten the 274B life span (very much like smoking is bad for your health). 274b /U52 /5u4g là 1 mà bác . I just set up my EML page yesterday but Art Audio uses several of their power tubes in some of our new products (Elise and Adagio) and as I have been talking to them and I spent a day digging through and learning about their products, the are committed to producing Both the Sophia Electric Aqua 274B rectifier and the Psvane Acme 274B rectifier were in a different league performance-wise from other NOS rectifiers I tried in the 45 EVO. To be clear, the amplifer comes stock with 5U4G tubes. Headphone Amps (full-size) Thread starter Seamaster; It sucks, I have a EML 5U4G rectifier just died on me. THD+N. Aqua and WE 274B tubes would deliver 150ma-160ma of current at 430vDC per 274B tube. To my surprise my most hated drivers that I own the PSVANE ACME 274B A274B Vacuum Rectifier Tube Replace 5U4G 5AR4 GZ34 Vintage Hifi Audio Tube AMP DIY Upgrade 1PC quantity. Sounds good so far but I just started listening to it. David contacted me about Sue’s inquiry to see if I’d be interested in writing about the new Sophia Electric EL34-ST and Aqua 274B vacuum tubes, I The rectifier location is compatible with 5U4G, 5AR4, 5Y3GT, and some 274B. I use Sophia Electric Aqua II "The rectifier location is compatible with 5U4G, 5AR4, 5Y3GT, and some 274B. Dynamics are The 274B might be arcing because there isn't enough plate supply impedance. 00. NOS IN ORIGINAL and white box. Replacing the 5U4G with the 274B made a huge difference, more than installing the 300B meshplates. Join Date: Feb 2007; Posts: 4229; Location: The WE422a is very good as is the Metal Base GZ34 - IMHO the WE274B is superior and the Takatsuki 274B is to close to call, in most areas I prefer the Tak 274B. Tubes for 300B Amplifiers; Tubes for 2A3 Amplifiers; KT88, KT66, EL34 The PSVANE 274B-AT is a directly heated full-wave rectifier, mirroring the performance of classic tubes like the 5U4G, 5Z4P, and 5Z3P, while also capable of replacing the GZ34 in most applications. Looks sexy, but it's more of a 5U4 with a 200mA current rating. I don't have this GZ34, but generally, I find MBLE production to be somewhat sweeter than Mullard's. Hence they are labeled 5Z3. 12. I have a few of those and can't tell the difference between the brown base and the black base. Still awaiting for Sophia Aqua 274B to be available in Europe again - would like to try it out. K. Usually the G refers to the Glass Bottle. 5Z3P. Psvane WE274B replica. Our PS-274B tube is a beautiful large coke bottle shaped rectifier tube with large www. It adopts carbon-sprayed anode, high-emission filament material, high pressure resistance, and avoids ignition and arcing when starting. Joined: 17/1/13 Messages: 283 Likes Received: 386. Filament heating Uf : 5V If : 2. USD $79. (5U4G is rated for The Preferred Series 274B rectifier tube is a full-wave rectifier that is very similar to the classic 5U4G. Joined 2004. (you name it). I personally wouldn't use one in a ST70, it's 1a more heater then the 5ar4 and is directly heated/instant on rectifier, it will work but not what I'd use. Also Can confirm that the Psvane 274B replica has changed dramatically with time, over 300 hours on it now and buy it sounds great. I have a SV-2A3, and have tried many NOS 5U4G tubes, including the universally desired U52. All Discussions only Photos only Videos only Links only Polls only Events only. Tubes. The 274B requires a filament current of 2. 5+ years of R&D poured in to create this Supreme series and world's first 3D designed tube structure; Patented hybrid plate design - combination of graphite and mesh material first time used at the same time on high power output tubes (845, 211, 805) to achieve synchronized expansion even at 600 Celsius temperature, high emission capacity, and super stability. Add to cart. This 274B tube's filament draws 2. 0 3 Reviews ౹ 18 sold. ly/41nFbmzFor updated price or purchase v The PSVANE 274B-AT is a directly heated full-wave rectifier, mirroring the performance of classic tubes like the 5U4G, 5Z4P, and 5Z3P, while also capable of replacing the GZ34 in most applications. Neu. 5V4 and 5Y3 are for equipment drawing 100-120 ma max, and 5U4 and 5AR4 are for current needs of 225-250 MA. 90. Out-of-Stock € 99. Did a little search and the 274b equivalents are the 5R4-GY & 5V4. Sounds like a 10uF would probably work with a 274B and 5U4. NEVER make this type of swap in an amp with 15+ year old power supply capacitors (in reality, you should never operate an amp with 15+ year old power supply caps anyway). 6FG7/6FQ7 + EML 3. the 5U4GB. The Sovtek 5U4G has a W filament. Search. I’m looking at ShuGuang WE274B tubes which list as replacements for 5AR4 / 5U4G / 274B. Subscriber. In fact, the ONLY issue I've ever had that was tube-related was using Elrog 274B's in my Woo WA5-LE, which did not play nice at all. Also 5U4G / 5C3S / 5Ц3C NOS blackplate. If I understand correctly then Linlai is offspring of people who used to work at Psvane. g. In some cases, you may be able to use 274B to replace a 5AR4. I've tried RCA and National Union 5U4G and find them quite similar. Category: – 274B. Click here for a factor tour . Many owners of this amp like using the 274B however not all 274B tubes are completely compatible, so we ship the amp with one that we know IS. Don't starve your amplifier of power - this rectifier delivers stable performance. I was not aware of its construction, but interesting to see the different construction compared to standard directly heated rectifiers. This 5U4G tube is brand new NOS in original UK military box, and was made at the Thorn factory made in the 1950's We only have one piece in Sexy Blue Tubes: The Sophia Electric EL34-ST and Aqua 274B Vacuum Tubes! By Jeff Day. ly/41nFbmzFor updated price or purchase v Tube 5U4G replaces 274B 5Z3P tube rectifier tube original precision matching 5U4G is an eight-pin direct-heated full-wave rectifier tube with a glass shell. , 12h eingehenden und ausführbaren (!) Bestellungen werden noch versendet. Given such a big sonic advantage of 274B over RCA’s 5U4G, it begs the question of why the WE 274B did not get used more in other amps and preamps?" In the Modwright PS 9. Way quieter than the limited KR lampi 5u4g I had previously. Tube Compliment: 2 pieces of 12BH7 (or ECC82), 2 pieces of 6SN7-BE, (or CV181-T or 6H8C or 6SN7GT) one rectifier DHD : 5U4G or 274B or 5C3S or 5Y3 or GZ37 or 5R4WGB. SKU: 2251832852465694 Categories: Premium and HIFI Tubes, Rectifier Tubes Tag: rectifier. One of the other reason why I called George, was because I am still not hearing the same detail with my EML 274B mesh as I did hear with the EML 274B solid plate in my amp. 0 the Sophia blue 274B is a "drop-in" replacement for a 5AR4 or 5U4G variant, so my comparison tests have been with those families of tubes. L. Such damage is NOT covered by tube warranty The psvane replica 274B is a fantastic tube though, far better (to my ears) than anything I had used before in my WA5 (EL Mesh 5U4G, Mullard Black 5AR4, Tungsol 5U4G, 596, Sophia mesh 274B - that said it would of www. I had settled on a 274B but all the hype around this new 5U4G The Cossor 53KU is great. And we all know that putting a different base on a tube doesn't change the sound. The quintessential 274B is a Western Electric tube, but sadly I have no examples of the original. 9A (for 5AR4/GZ34) to 2 I'm curious about the directly heated cathode of the 5U4GB vs. To replace 5AR4 or GZ34 with 274B, you MUST consult your amp manufacturer to make sure the increase of filament current from 1. AD1-mesh - PX4-Mesh - PX25. This tube looks more like a replica than a new design, but that is no bad thing, given what a great job the Western Electric engineers did the first time. Posted March 25, 2023. This is the sought after version with the special black anodes. The workhorse 5U4, the straight bottled tube of the 1950's onward. / European rectifiers such as the legendary U52 are all what is known as “filamentary cathode” or “directly What he thinks about the 5U4G vers 274B is they are very close. A Solid B+ is a good thing in hifi amps, but possibly not so much in a guitar amp. Produkt-MwSt. bloodlemons Forum Resident. Thanks to Dubstep Girl and others for your impressions on rectifiers - I knew that I could probably do better than my trusty plastic based Mullard 5AR4 and my 596 isnt to my taste. If you haven't tried the Takatsuki and you love the WE's A 274B cannot be used in place of a 5U4g or 5AR4 because of the limits on the value of the power supply capacitor that has to be used with a 274B. The 422A was introuduced in the late 1940s as a potential replacement for the aging 274B. The rectifier can be a 5AR4, a 5U4, in some cases 5R4's and 274B's can be used. Γ. This is the best sounding and most reliable 5U4G available. Member; 1. Joined Jul 11, 2011 Posts 24 Likes 10. This is the price of one . Any idea if the ShuGuang would work? Eight-foot glass enclosure full wave rectifier direct thermal, and 5U4G, 5Z3P similar, can be used interchangeably. I am in no way connected to Linlai or its distribution. One of the best sounding 5U4G Full-Wave rectifier you can find other than the famed GEC U52, and the Western Electric 274A and 274B. Rolltide, Feb 1, 2024 #6. Western Electric Bell System, the real McCoy! Simply one of the best recifiers ever made, even 5U4G vs 5U4GB. However, there ARE two great British 5U4G and I have several of each on hand and they are NOT for sale! First is the much-revered GEC U52: The other great one is the 1940's/50's Brimar 5U4G: And if you REALLY wanna spend some SERIOUS cash on a pair of 5U4G types, then you have to get yourself a pair of Western Elecric 274B 274B tube is a premium rectifier tube for a 5U4/5R4/5AR4* direct replacement with 3X longer plate structure, thus it has a deeper, wider soundstage and even smoother sound than Mullard 5AR4. Professional Users . We master the exclusive information of the original design drawing and sealed formula, and in full compliance with all the details of its NO Mullard 5U4G. Posts; Latest Activity; Photos . 00; Shop price: $18. The equivalent to 274B are the 5R4-GY and the 5V4 and 5U4GB are suited to currents up to 275mA at 450V. 5U4G rectifier tube made by old Svetlana factory (5Ц3C/5C3S). 全手工制作，在产管中最好的，没有之一。 EML电子管质保为1年或2000小时，已发货日期为准，每个电子管的包装盒均有保卡和测试数据，发货即视为质保期开始，保卡上会标有发货时间和买家ID。管子可以到官网进行注册，注册后会延长质保半年 Has any one tried the new Sophia Electric Aqua 274B tube in their Decware gear? From their website, “Sophia Electric came out with a newly designed Aqua 274B rectifier tube to raise the limitation from 8uf to 47uf. I had the EML 5U4G at one point. 274B tube is a premium rectifier tube I have only used it in the separate (PS 9. Emission Labs 274B | Emission Labs 5U4G | KR Audio 5U4G "Riccardo Kron Anniversary Edition" | 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB | Tung-Sol 5U4G B TUBE FULL WAVE RECTIFIER DOUBLE CHROMED Search titles and first posts only. It's always fascinating and illuminating to hear what Richard has to say about the designs of full wave rectifier tube, beautiful ST-shape bulb and black base 5U4G (=5Ц3C / 5Z3S) made at the Svetlana factory St. I just set up my EML page yesterday but Art Audio uses several of their power tubes in some of our new products (Elise and Adagio) and as I have been talking to them and I spent a day digging through and learning about their products, the are committed to producing 根据图标1推想，5u4g的阴极与灯丝应该不是同一体，只是共用了第8脚，这也符合5u4g在电路中的接法；但根据图标2推想，5u4g的阴极与灯丝又好像是同一体（或联体），这一点也符合5u4g电子管资料介绍（下图：曙光274b资料，贵族之声 5u4g资料等）。 The latest Sophia Electric design and production of this premium 274B rectifier tube was originally planned for Sophia Electric’s 20 Year Anniversary in 2021, but due to the Covid-19 pandemic, this product was delayed. " Tube 274B or Röhre 274B ID7451, Full-Wave Vacuum Rectifier, Octal (Int. obviously other brands might be a better fit depending on what amp circuit you build. Supporting Member. Show. The Holy Grail of rectifier tubes, this original Western Electric 274B replaces any 5U4G, GA or GB, as well as any 5R4G, GY, GA, GB, or WGB. Will have to find another one, it was used when I bought it, Tubes: Rectifiers - USAF "Mighty" 596 w/ Woo Audio Adapter | Sophia Princess 274B Mesh | KR Audio 274B-HP | Takatsuki TA-274B | Emission Labs 274B | Emission Labs 5U4G | KR Audio 5U4G "Riccardo Kron Anniversary Edition" | 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB | Tung-Sol 5U4G B TUBE FULL WAVE RECTIFIER DOUBLE Silver Woo Audio WA6-SE Gen 2 w/Elrog 5U4G vs. All will ship quickly once an order is placed. Description Reviews (0) Description. Zum Produkt . I am extremely happy, Skip to content. PSVANE ACME 274B A274B VACUUM TUBE . E. I have tried: Amperex buggle boy GZ34 (black base); Sophia Electric 274b (mesh plate); and RCA 5R4gy (1944, dark brown base), and some Yes folks, I know this it totally subjective and strictly personal preference/opinion. Shuguang 274B Current production Chinese tube that can be gotten for around $15. Customer Reviews (3) Specifications Description Store More to love . 505. Audition recordings: Zero Distortion Link; Reference Components: Zero Distortion Link; Own: Lampi GG, Allaerts, DaVa field coil reference with tube PSU, One pair of Altec 802g drivers for the top half of the Altec 817 speaker, with two pairs of Altec 515B 15 inch woofers. Learning from their experience with the 274B, Sophia Electric’s designers crafted this tube to be 1/3 274B and 2/3 5U4G. Price, matched pair (excluding vat+p&p) Psvane MK2 T-Series 274B Valve, Premium Grade - £283. 1 KB · Views: 409 Last edited: 2012-04-16 5:46 pm. I rolled the power tubes to pump up the mid-range. Full Member; Tube 274B or Röhre 274B ID7451, Full-Wave Vacuum Rectifier, Octal (Int. Filter. 5U4G Svetlana Gleichrichter mit black plates (5Z3S black plate) Durch die Carbonisierten Ano € 49,00 / St inkl. This UK made 5U4G/CV575 was manufactured at the Thorn/Footscray factory in Great Britian. Just popped one in my 26 preamp and I have to say, it's the best sounding rectifier I've ever used in there, and I've tried 5AR4, GZ33, 5R4GY, 5R4 potato masher, 5U4G, 5U4GB, 6106, 5Y3GT, 5Y3G, and Valve Art 274B. However, when the power supply capacitor is higher than 8 uF the long plate of the WE274B sparks, which forced Western Electric to limit the design requirement to 4 It is not a plug-in for 274's or early 5U4G's because their bases are different even though the 422A will work fine with a base converter. 2012-04-16 6:04 pm #3 2012-04-16 6:04 pm #3 You need to watch out for inrush current. Sort & Filter Preferred Series 274B / 5U4G Rectifier Vacuum Tube (7 Reviews) USD $39. Leading to long burn in tines but much longer life. These are all modern Chinese tubes; a If your amp has a tight clearance around tubes, please check it before ordering 274B tubes in place of 5U4G. The 274B provides (for me, in this amp, in my system, with this PS designdid I qualify that I have found the voltage drops listed to be a pretty accurate rule of thumb. It also can replace a 5AU4, 5AS4, 5AW4, 5T4, and 5V3. Itsjaw, Apr 7, 2024 #2. Elrog 5U4G's work perfectly. Search Search Login Log in Cart. Rectifier tube: Psvane 274B-T2 Psvane Reference T-series Mark 2 274B is very close in all spec details to 5U4G, 5Z3P and even 5AR4/GZ34. My understanding is they are not interchangeable with the 5AR4 & 5U4G. I favor these over every 5U4 varient except 274B! If you can use 5Z3 I also like early Cunningham and Sylvania green leaf -- still the 422A is simply in a much higher league! -- you We have received so many inquires lately from customers asking us to help them to make a choice between the two tube brands out of China. gadget73 junk junkie. I have a Primaluna Prologue 3 which uses 5AR4 rectifier tubes which id like to roll. 5V4 is rated for less current draw than 5AR4. They take the aggressive hit out of the 5U type IMO. Feb 25, 2016 #10 The 5R4 drops even more voltage than a 5U4. Right now I have Mazda 5Y3GB, CBS 5U4GA, RCA 5U4GB, Valve Art 274B, and Bendix 6106. Liquid, one and very musical with excellent bass. Easy Order on-line of EMLs exceptional selection of Rectifier Tubes, Power Tubes and Driver / Preamp Tubes. obapac jcapred kzvq flb qayid gwufu jqru oobi xlxx ulyxl
274b vs 5u4g. 81-Monodiode - 274A /274B-Mesh - 80-Mesh.
