Sylvania 5u4gb review forum I guess I have to multiply by two, so I get 360 ohm for the 5AR4 and 100 for the 5U4GB. Compared to the Sylvania 5U4G, its more neutral, but has similar performance. Bookmark the permalink. Price: $54. Ken-Rad smoked glass, fantastic extension, super bass punch with control, very neutral, no grain or harshness but See more SYLVANIA 5U4GB in OEM Sleeve Tube ID 4232; Product ratings and reviews. Add to Cart. Item Number: 912. Listed on Aug 26, 2024 Oct 1, 2003 · New items New comments Author list Series list Latest content Latest updates Latest reviews. Register; Login; Access a forum of audio enthusiasts; Basic Dealer For $165USD a year Pair of Sylvania 5u4gb/Tall Bottle/Black Plates/ NIB Hickock 800 Tested. My question For what it is worth, I prefer the Ken-Rad 5U4G, for its superior dynamic clarity. Should I? Jan 20, 2019 · our review of the Winged "C" 6L6GC tube: "This may be the closest thing available if you really want the vintage sound of the large bottle Sylvania and RCA tubes of yesterday. Tubes were manufa Jul 30, 2015 · There has to be more to the “sound” of rectifier tubes than just the different output voltages. These are what they suggest as upgrades: Output Tube: Sophia Electric 6SN7 Rectifier Tube: Mullard, Amperex or Philips GZ34 Made in Holland. Originally $29. You must have a verified phone number and physical Reducing my stock of tubes, at great prices. Japanese made tubes were also very good, if those are available. I guess it’s best to stick to the official specified designations. Sylvania 5U4GB Black Plates 1960's - Top O Getter Rectifier Tube Testing 100%/99% Apr 12, 2009 · Woo Audio WA6, Schiit Asgard 1, Schiit Modi, Mac Mini, Cambridge Audio Azur 550C, Denon D2000, Beyer Dynamics DT770 Pro 250 ohm, Sony MDR-V6, Tascam TH-02, Sennheiser PX100 Sep 28, 2014 · Dubstep Girl's Massive 5AR4/5R4/5U4G Rectifier Review/Comparison! (Rectifer Tube Rolling thread) Jun 9, 2009 · Rectifiers: (2) NOS Mullard GZ30 (2) NOS RCA 5V4G, (2) NOS Svetlana 5U4G, (2) NOS RCA 5R4GY (1) NOS Ken-Rad 5R4GY (1) Electro Harmonix 5U4GB (2) NOS Sylvania 5U4GB (1955) Woo Audio WA6, Schiit Asgard 1, Schiit Modi, Mac Mini, Cambridge Audio Azur 550C, Denon D2000, Beyer Dynamics DT770 Pro 250 ohm, Sony MDR-V6, Tascam TH-02, Sennheiser PX100 Sep 27, 2024 · (24) NOS to Strong Tested Sylvania 5U4GB Blackplate Radio Audio Rectifier Tubes, Tests are on Tubes Good Luck Bidding ! (((((I do not lower declared value or write as gift due to US Laws)))))</p><p>I no longer ship to China & Vietnam due to lost packages in Custom's </p> Nov 6, 2011 · HOEN Xenonmatch Titanium H11 W70 - Acura MDX Forum : Acura MDX SUV Forums IslandBeef 2012 Honda Odyssey EX-L with NAV - Crystal Black Pearl/Truffle Leather - DDM HID H11 5000k Kit (retired) (30) NOS to Strong Sylvania & CBS 5U4GB Blackplate + Free Extra Guitar Radio Audio Rectifier Tubes, Good Luck Bidding ! (((((I do not lower declared value or write as gift due to US Laws)))))</p><p>I no longer ship to China & Vietnam due to lost packages in Custom's </p> Dec 6, 2014 · Anyway, this is a 5U4GB so it won't cost a fortune to replace the JJ with a NOS Sylvania or GE. Equivalent to most 5 volt rectifiers and can also substitute for 5Z4G, and 5AW4. ga('set', '&cu', 'EUR'); ga('ec:addImpression', { 'name': 'TAD 5U4G REDBASE PREMIUM SELECTED', 'id': 'RT512', 'price': '42. It's a fairly neutral tube with a slight warmth. ANy differences would be in performance nuance, just as in swapping brands of 6L6 or 12AX7 You may prefer one, but all will work. Huge base also. I now have a pair Jan 5U4GB Philips ECG in my L5 and there is a difference in sound. If you don’t like it, send it back (you cover shipping) within 5 days for refund. If you want a 5U4GB that will take a beating and likely outlive you, then this your tube. Used – Very Good. There may be others, but I have all of these in my inventory. Write a review. (ANOS)Satisfaction guaranteed. If you would like a picture of YOUR specific tube we will send you one immediately. Everything I'm selling on Reverb. There seems to be a fair choice. Honestly, GE or Sylvania are probably as good. Up for sale is a trio of 5U4GB Rectifier tubes. 99 Shipping. I actually much prefer Tung-Sol 5U4GB to any other 5U4 type (except the Ken-Rad), though even the lowly Sylvania 5U4GB is preferable to a new-production version, in my opinion. Share this post: This entry was posted in 5u4 by tubemaze. Sylvania 5U4GB. Home Resources References Tubes Forums Links Full-Wave Rectifier. Learn more. ALso what is pin one for on these tubes:ashamed This new old stock-testing matched pair, black plates Sylvania 5U4GB / 5AS4A rectifier tubes was tested in our TV-7/U and they measured: Tube One: 64 / 64 (Sylvania and logo stenciled on base with code hg AAO; 5U4GB 5AS4A stenciled on glass) Tube Two: 64 / 64 (Sylvania 5U4GB 5AS4A stencile Mar 1, 2004 · Though, I have a bunch of the "ST" 5u4g types I ended up with an early Raytheon 5u4gb that was untill Tim sent me that Mullard gz32, which is a 5v4g. Mar 28, 2013 · Read our review. Brand New. Listed on Oct 25, 2024 May 12, 2012 · Might as well share my thoughts on 2A3 valves: Sylvania S plate fishing-pole, great tube overall and an upgrade over stock. SOLD OUT. Jan 31, 2002 · Equipment Forums. I have only seen 4 & 5 pin 5U4's and one of these has all 8 pins like a power tube. If you're stuck with 5U4GB, I think the Tung-Sols are about the best sounding in the various amps where I've used them. 5. Dec 10, 2013 · Please let us know your impressions between the S/P-274B and Mullard 5V4G when you get the chance. With Brown bases, triple micas, D getters and very heavy construction, our stock is all Apr 28, 2005 · 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 concerns ? from what I gather the 5u4gb is just beefier. First, different brands of the same tube can sound very different, and consistently so—-a GE 5u4GB sounds different from a Sylvania 5u4GB and from an RCA 5u4GB despite all of them having the same output voltage. 0. $7. If you need something I don't have listed yet, let me know, I'll check m Feb 18, 2014 · Hello Tube World, I am not quite well versed in Tubes as I am with SS. Dec 10, 2013 · Dubstep Girl's Massive 5AR4/5R4/5U4G Rectifier Review/Comparison! (Rectifer Tube Rolling thread) 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB Equipment Forums Dec 11, 2021 · Ditched the factory tubes almost immediately and upgraded to a NOS-5931 JAN Sylvania 5931 / Ruggedized 5U4GB Rectifier (1957) & Matched Pair of Mullard 12AU7. krmathis /img/forum/go Harmonix 5U4GB (2) NOS Sylvania 5U4GB Rectifier Vacuum Tubes 5U4G=5U4GA=5U4GB=U52=5931 Full-Wave Rectifier Sylvania 5u4gb pre-owned Sylvania 5u4gb pre-owned SKU: 25659-1 Category: 5U4G=5U4GA=5U4GB=U52=5931 Full-Wave Rectifier Tag: Rectifier Tubes Brands: Sylvania . 2-day handling on all shipping orders. My question is about the number of pins. It was made in the 1950's for the military. These british made U52 tubes are brand new NOS in original boxes (branding on tube varies but all are original GEC made U52), and were made in the 1950's at the Hammersmith factory by Genalex (Marconi Osram - M-O Valve). Price $7. Any of these brands would be fine. - Thom Dec 10, 2013 · They're brand new, made from thoriated tungsten filaments and each tube is hand-made. 50 Dec 10, 2013 · 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 CHROMED HANGING GETTER | Elrog NOS NIB Sylvania or Phillips black plate 5U4GB- These mil spec black platerectifiers are another great part of your tone. ) For example, rectifiers play a LARGE role in the sound in my Woo Audio WA6-SE's and WA5-LE. Mar 28, 2011 · I picked up a really ugly, rusty (but not super-bad) amplifier a few months ago. I Aug 26, 2024 · This Bulbs & Tubes item is sold by JWGVintage. My amps use four GB's and I've found the Sylvania GB to be superior to even the earlier 5U4G by far. Ships from Canada. I started checking the tube complement and realized to my suprise that it had (4) Mullard 12AX7's (2) RCA 12AU7's (2) Sylvania Yellow label 6L6GB's and a Sylvania 5U4GB Dec 10, 2013 · Dubstep Girl's Massive 5AR4/5R4/5U4G Rectifier Review/Comparison! 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB NOS 1940 Sylvania "Green Leaf" Z0 6F8G w/Woo Sep 12, 2024 · Classified: FOR SALE - NOS Sylvania 5u4GB Rectifier Tubes asking for $60. Tests strong and even on both sides. So let's assume 180 ohm for the 5AR4 and 50 ohm for the 5U4GB. Dec 8, 2017 · Tung-Sol 5U4GB (US) very honest, nothing exceptional, a great buy for its low cost! Sylvania and GE 5U4GB (NOS) good, but below Tung-Sol May 1, 2011 · The Mullard GZ37 High Wycomb are wonderful in some applications. Picked up a quad of old Sylvania 5U4GB from eBay and received them today. Dec 2, 2004 · I have an Audio Note Kit 1. Also, 5931 is a great military replacement for the GB, but kind of scarce. Mar 28, 2011 · It had a Sylvania 5U4GB in it, so I tested it on my B&K 747B tube tester. gif Great find! Raytheon rocks. It may have been made by others. 5U4GB SYLVANIA NOS-NIB, rectifier tube. Simple Returns, Secure Transactions, Human Support Hello all. Domestic &. In the original review the RCA 5U4 was preferred to the Sylvania, but I'd put them the other way round. Read, write and discuss reviews more. 25. Type Substitutes Base Diagram; 5U4GB: 5AS4A, 5AS4, 5AU4 SYLVANIA Type 5U4GB FULL WAVE VACUUM Mar 7, 2021 · Find many great new & used options and get the best deals for SYLVANIA 5U4GB VINTAGE ELECTRON VACUUM RADIO TUBE at the best online prices at eBay! Free shipping for many products! Apr 14, 2024 · - another rectifier candidate is the Sylvania 5U4GB as I found it at a pretty cheap price - I will be getting the ZMF TAD tube upgrade pack soon, so that includes: 5u4G / Pair KT-88 / NOS 6N9S. For years, the Chinese were silk screening 274B on 5U4Gs so they could charge substantially more for the tubes. If you blow a power tube it can take out your output tranny. Apr 6, 2009 · New items New comments Author list Series list Latest content Latest updates Latest reviews. Sylvania 5U4GB black plate 1960s Used tested good. If you call you can specify you want RCA as long as they have them. Close menu Customer evaluation for "5U4GB SYLVANIA NOS-NIB, rectifier tube" Oct 17, 2022 · Sylvania 5u4G Vacuum Tubes $99. In 5T4, I have RCA marked tubes. They look to be in great shape and were all tested prior to selling. One thought on “ Sylvania CHS 5931/5U4WG Dec 9, 2023 · I use a ANK Mentor L5 as well. That was very easy to establish the two were identical since their specifications were identical. 5U4GB (2) NOS Sylvania Feb 4, 2010 · What info I can find on this tube,it appears to be a Soviet version of the 5U4. Tested using the Amplitrex AT1000, RoeTest R9 Professional System, or TV7-D/U. It has been tested for shorts and gas. 99 + $6. By the specs it appears to be useable,I dont know about its reliability. I have this one Sylvania 5u4gb (organ amp pull) tube that has a bit of arcing around the base of the one plate. 5U3C is the Russian designation,not 100% sure that is actually a "U" or some Russian letter that looks like a "U". ampix. Tubes will be packaged securely. Here are my amateur comparison notes between the 2 . I guess my preference would be for the older 5U4G ST-type tubes from RCA and Sylvania. We’re clearing out selected vintage parts, tubes, and other ephemera so Model Type / Number: 5U4GB Tube Brand: SYLVANIA Purchase includes the pictured tube (s) We test on a Jackson 848A Tube Tester and this tube tested: 125%/125% Each tube is allowed to warm up for 20-30 seconds while we check for glow. Look on www. It arc at both cold start and hot restart on my amp and the amp has not been modified in anyway. Sylvania 5U4GB Black Plates 1960's - Top O Getter Rectifier Tube Testing 100%/99% Thus is an excellent 50s/60s Sylvania 5U4GB -Made in the US Tested strong at >90% which is essentially NOS. com): Durable 5U4GB built for the military (JAN = Joint Army Navy). Don't bother with the Philips, you can do much better for low $$. The biggest change I have noticed so far was going from a Raytheon 5U4gb to a 2/59 US Army Coke bottle RCA 5U4G I think the 5U4G and 5U4GB are interchangeable I also like the JAN Sylvania 5931. Thanks again. I've tried RCA and National Union 5U4G and find them quite similar. Often not as much as published, 5 volts maybe. This is a vintage Sylvania 5U4GB rectifier tube. 4 users rated this 5 out May 17, 2012 · I've found in the real world there is little voltage increase from a 5U4GB to a GZ34. Dec 10, 2013 · Dubstep Girl's Massive 5AR4/5R4/5U4G Rectifier Review/Comparison! 1957 NOS JAN Sylvania Ruggedized 5931/5U4GB NOS 1940 Sylvania "Green Leaf" Z0 6F8G w/Woo Oct 7, 2006 · Originally Posted by Spareribs /img/forum/go_quote. I think anything made today with 5U4 on it should work. Luckily the hifi-crowd doesn't like the 5U4GB so NOS prices are still relatively reasonable (and TRUE NOS tubes are still easy to find, not just used junk that's sold as NOS). NOS 5U4's are not expensive and are readilly available,I would rather just use the real thing and not wonder about the reliability JJ Electronics T-5U4GB-JJ Amplifier Tube is robust and economically priced, and it’s our first choice as the best 5U4G tube. 8', 'brand': 'Tube Amp Doctor GmbH Picked up a quad of old Sylvania 5U4GB from eBay and received them today. sclamb /img/forum/go Harmonix 5U4GB (2) NOS Sylvania 5U4GB (1955 Dec 10, 2013 · 15. These are built like the world-famous Bendix Red Banks tubes and are immediately discernible from normal 5U4GB variants. 99 In Stock! NOS Tubes Precision Tested and Ready to Ship! Rectifier Vacuum Tubes 5U4G=5U4GA=5U4GB=U52=5931 Full-Wave Rectifier NOS/NIB SYLVANIA 5U4GB BLACK PLATES TESTED STRONG AND BALANCED. But yeah, the older PR's and DR's run very high in voltage. Dec 10, 2013 · 15. - I could probably get some real cheap but used Brimar 5R4GYs. Tremendous harmonic content and an overall depth in sound make these another excellent choice for the purist. This was tested on my Dan Nelson calibrated TV-7/B. jp Sep 7, 2008 · In plain vanilla 5U4GA and 5U4GB, I have GE, RCA, Sylvania, Philips ECG (JAN), and ( I think ) Tung Sol made tubes. Oct 25, 2024 · This Bulbs & Tubes item is sold by LeedsRadio. This was common when companies would source tubes from other manufacturers when low on inventory. com tests as strong as new on my calibrated Eico tester. Dramatic improvement in the sound as well as the power. As any experienced Head-Fi’er knows, “under $1,000” means $1,200 plus shipping. American quality, good or better than new One Sylvania 5U4GB Rectifier TubeTesting NewBlack PlatesTop O GetterIn A New White Tube BoxTube test results (where minimum good is 600/600 Gm and average new is 760/760 Gm)This tube tested at 770/760 GmNo shorts or leakageSKU # 18-2 85384801 TC Tubes Home > Popular Tubes > 5U4G / 5U4GB tubes > Sylvania 5U4GB - black plates. Unlike the rest of diyAudio, the Vendor has complete control of what may or may not be posted in this forum. Of course, different strokes, different folks. My best 5u4g tube bargain was a few months ago. Tube Type / Number: 5U4G Actual Brand*: Sylvania (by Philco) Printed Brand: Philco Quantity of Tubes: Single Plate Construction: Black Wrinkled Getter Construction: Top/Bottom [] Country of Manufacture: USA Visible Date Codes: Lettering Condition: 90 Percent Year Made: Number of Mica Spacers: Looking for the perfect way to add great tone and reliability to your rig? Most knowledgeable tube users swear by USA NOS tubes versus some of the newer manufactured tubes. The Tungsol 5u4g VT-244 are highly sought, as are the Ken-Rad, Raytheon and Sylvania VT-244's. I assume its no big deal Sylvania 5931 5U4GB Triple Mica Mil-Spec Rectifier Tube, High TestingThis tube has triple mica construction, black plates and a D getter. The sound is more extended in the top frequencies and more enjoyable with the Jan Phillips. 95, now $22. The tube tests with read Oct 27, 2008 · My recent quest for a new amplifier eventually led to an exploration of tube amps under $1,000. Harmonix 5U4GB (2) NOS Sylvania 5U4GB (1955) (1) Valve Art 274B Nov 19, 2022 · Well, Sylvania made a 274B for a short time, but aside from that, only Western Electric made a true 274B. Dec 10, 2013 · In my DAC though I can use all rectifiers both directly and indirectly heated as long as they have heaters on pins 8-2 and high voltage anodes on pins 4-6. Oct 28, 2002 · I was diggin around in the basement and came across a old Dukane PA amp I had bought for the Chassis and "Cage" a while back. Sylvania 5U4GB - black plates. Usually 5U4s test with the meter pegged all the way to the right, at 120. Seller Reviews (393) Reverb Protection. Sep 7, 2008 · Disclaimer: This Vendor's Forum is a paid-for commercial area. Originally $42, now $30 (29% savings) Seller Reviews (25) Similar Listings. Graphs compare the 5U5G and 5U4GB. $45 NOS JAN Philips/Sylvania 5U4GB *** SALE PRICE $35 *** $35. 00 for chinese or russian made! Buy USA made quality !!! Priced at just $49. Jul 23, 2016 · Antique Electronic Supply has NOS American made 5U4GB for $16. The sound is more bass heavy and mechanical with the EH installed. The NOS Mullard 5U4 was rather flat, like the RCA version. SKU: Jan Philips 5U4GB. If you require an original box, we will do our best to supply one. $22. Sep 13, 2020 · casque sédentaire: Grado drivers Nhoord red v2 G cush - Xduoo ta 30 moddé Mullard 12AU7A / Sylvania JAN 5931 5U4GB Sédentaire: kef ls50 wireless II et deux caissons klipsch r100sw Deezer Sans musique la vie serait une erreur SYLVANIA 5U4GB 5U4G 5AS4A BLACK PLATE TOP O GETTER NOS+ NIB VINTAGE 1979 FOR RCA. Sep 7, 2008 · I took the specs of the 5AR4 and of the 5U4GB (just to make an exercise) I see that the 5AR4 has a plate impedence of 160-200 ohm per plate. I have tried many (Sophia Electric 274b, RCA 5R4G (1944); Sylvania 5R4gy; Amperex GZ34 (black base); some Russian 5Y3 types and of course the GZ37 big bottle, and WE422a). Let me give two illustrations. This one tests all the way on Test 2 and Test 2 Tube Life, but on Test 1 Tube Life it goes all the way, then starts to go back until it's around 80 out of 120, which is still good, but isn't what I Mar 11, 2011 · RCA, Sylvania, National Union, Raytheon, GE, KenRad - everybody made them by the boatload and to me, there's little discernible difference sound-wise between them. (these as a review package) - I will also probably buy a pair of KT66 from TAD. 99! 5U4GB is uprated to 275ma Sylvania 5U4GB Black Plate Rectifier Vintage Vacuum Tube Excellent rectifier option for any 5U4GB application. Lacks microdynamics and air, slightly warm and muffled. Nov 2, 2004 · Member Reviews; Headphones; Smart Home Sylvania 6SN7GTBs, FAA issue ca 1969; GEC KT-88s; Mullard 5AS4s. This is also one of the coolest looking tubes I have. Guaranteed to be in good working order. Seller Reviews (151 Dec 2, 2004 · I have an Audio Note Kit 1. org in the Enzo collection. TheWuss /img/forum/go Harmonix 5U4GB (2) NOS Sylvania 5U4GB (1955 Sylvania ANOS 5U4GB | 5U3C | 5U4G | 5C3S | 5AS4A | CV1863 Rectifier. 99. 46 (25% savings) Seller Reviews (40 Mar 31, 2009 · New items New comments Author list Series list Latest content Latest updates Latest reviews. I think that depends on the amplifier (pre-amplifier, DAC, etc. 14-Day Return Policy. Currently, I'm using some Sylvania 5931's in my Pilot SA-360 amp and a Mullard GZ32 in my Modwright Transporter. Free Shipping. At FuzzAudio(. I got 2 General Electric 1950's stock NOS or at least it was tested very strong for just $4. gif NOS RCA 5R4GY (1) NOS Ken-Rad 5R4GY (1) Electro Harmonix 5U4GB (2) NOS Sylvania 5U4GB (1955) (1) Valve Art Sylvania 5U4GB Black Plates 1960's - Top O Getter Rectifier Tube Testing 100%/99% To try and see what could be done with the Ta-30 by trading tubes, I gathered a group of rectifier tubes ranging from the original Chinese 5z3P, to the much touted Sylvania 5931 milspec, and including, RCA, GE, CBS, National Union, and Raytheon made 5u4g models as well as RCA, GE, And current production Electro-Harmonix 5u4gb tubes. I started with a pair of EH 5U4GB Rectifiers. Looks to be manufactured by Sylvania but sold by RCA. Related Posts The 6 Best 5AR4 Rectifier Tubes - (GZ34 Reviews-2024) Vintage new in box rectifier tube. Dont ask how I know! ATTENTION BUYERS - Please Read Our Shipping Terms, Our Testing Standards, Our Return Policy (30 Day Any Fault) and Read Our Great Reviews!Tube in picture represents tube you will get. Find many great new & used options and get the best deals for Sylvania 5U4GB Vintage Tube & Tube Socket at the best online prices at eBay! Free shipping for many products! Mar 21, 2008 · I just posted some pages from my old Sylvania 1959 book. 4 product ratings. If you wish to discuss technical matters outside the bounds of what is permitted by the Vendor, please use the non-commercial areas of diyAudio to do so. Seller Reviews (400) Similar Listings. The Sylvania 5U4GB is a quality tube perfect for your application. 93. Ships from Bronx, NY. It had a Sylvania 5U4GB in it, so I tested it on my B&K 747B tube tester. Built like a tank! The GEC U52 is arguably the best sounding 5U4G Full-Wave rectifier ever made, other than the Western Electric 274A and 274B. The 5U4GB draws a lot more amperage though. Headphone Amps (full-size) NOS Ken-Rad 5R4GY (1) Electro Harmonix 5U4GB (2) NOS Sylvania 5U4GB (1955) (1) Valve Art 274B Review of AD2000 Nov 17, 2007 · Even when the voltage drop measured the same, I'd hear huge changes in sound (presumably due to dynamic impedance variations and switching spectra) between, say, a Tung Sol 5AS4A (overblown bass, crunchy top), a Tung Sol 5U4GB (hard bass, strange coloration, lack of detail), an RCA 5U4GB (gorgeous lower-midrange, glassy top-end) or a Sylvania Sylvania 5U4GB. This sucker has 3 micas and a "girder" in it. This listing is for a NOS NIB minty condition 1960'S Sylvania 5U4GB rectifier with the with black plates, and dual side gettersIt tests right in the NOS range on B&K Dynajet 700 tester, as well as tested in my preamp where it performed flawlesslyIt comes in a Standard Brand box who was an overstock tube seller for all the manufacturers May 10, 2008 · The one amp I have been dreaming about based on reading the Head-Fi forums is the SP Extreme, and your review just adds fuel to the fire. We have a SYLVANIA (USA made) 5U4GB blackplate tall glass envelope Rectifier tube, a GE Electronic brand (USA made) 5U4GB Rectifier tube and a BALDWIN brand (USA made) 5U4GB blackplate tall glass envelope Rectifier tube. Dec 10, 2013 · 2 x AZ1 mesh, 53KU, Sylvania VT-244, GE 5U4, Cossor GZ33. The Houston Head-Fi Meet was going to provide plenty of good amps to audition in the solid-state camp along with a few This listing is for a great condition 1956 Sylvania 5U4GB with black plates, and top D getterIt's definitely seen some use, but it's tightly balanced and tests way in the NOS range on my Hickok 600AIt was also tested in my preamp where it performed perfectlyStrong and totally solid this Nov 21, 2021 · (1) 5AR4 rectifier tube (may also use 5U4GB and 5V4GB). Sylvania NOS tubes are hardy and can last a lifetime! We do not have original boxes for all vintage tubes. 00. $8. The 5U4GB has an impedence between 21 and 67 ohm. Used – Mint. I feel like this tube has a slight harshness and leanness to it. jp Oct 29, 2002 · I agree with Jim, go with NOS Sylvania and Tung Sol (harder to find). These JAN 5U4GB are guaranteed to outlive and outperform anything made these days. Find many great new & used options and get the best deals for SYLVANIA 5U4GB in OEM Sleeve Tube ID 4232 at the best online prices at eBay! Free shipping for many products! The Sylvania ANOS JAN-5931 5U4GB is a super ruggedized ultimate quality rectifier. Built to last, these babies will give you a lot of use at a low price! Other dealers charge over $20. These won't be around forever, so take this Jan 25, 2010 · New items New comments Author list Series list Latest content Latest updates Latest reviews. Tung Sol 5U4GB Another cheaply available tube. System used :- Mac Mini running Pure Music (Wave files) - Weiss Int 202 - Audio GD NFB 7 DAC - WA6 (TS 6SNTGT drivers) - TH Apr 14, 2008 · Originally Posted by atbglenn /img/forum/go_quote. yhr ooyva vtwy ngfnrlcj vzmo wcwtd hqthc rfh isenqrk pgodoo