6l6gc str vs 6l6gc forum.

6l6gc str vs 6l6gc forum I had tried these a few years back, probably when they first started showing up, and didn't like them at all. But I have a lots of NOS RCA's so I kind of like using them. Aug 1, 2001 · THIS IS THE 25th ANNIVERSARY YEAR FOR THE LES PAUL FORUM! PLEASE CELEBRATE WITH US AND SUPPORT US WITH A DONATION TO KEEP US GOING! We've made a large financial investment to convert the Les Paul Forum to this new XenForo platform, and recently moved to a new hosting platform. Biggest difference in my opinion between the TS 7581A and TS 6L6GC-STR is not really better bass (although it might be slightly deeper, tighter), but rather an overall more refined top to bottom presentation. I recently bought a quad of T-S 6L6GC-STR on the recommendation of Jim McShane, and I am really impressed with them. He got rid of his 6L6 amp and put JJ’s in it. They sounded fantastic, but I knew the amp originally had the RCA 6l6 black plates. Apr 11, 2009 · I have both the Tung-Sol 5881 and the Tung-Sol 6L6GC STR and they are totally different. Tube Audio . Jun 21, 2006 · 6L6GC-For new, I think the TAD 6L6GWC-STR come pretty darn close to a GE 6L6GC-my favorite. Oct 27, 2005 · I recently loaded my Mark IIB with the TAD 6L6GC STR Black Plates (RCA Black Plate Copy??)and it sounds amazing. one day I ran across a web site that was selling limited amounts of tubes. Apr 26, 2012 · 6L6GC is what that amp will take, and there are many choices. I'm looking at a couple of different manufacture tubes and would love some opinions from those who are move versed in these tubes than I am. T. Then I saw the second tube from right glowing, causing loud speaker hum. I was pleasantly surprised Sep 8, 2016 · The Sylvania 6L6GC STR 387 is probably the most famous 6L6GC ever made. The amp sounds good with them and I think they are an improvement over the 430's. Tone? Mar 4, 2009 · Does anyone know for certain if the Mesa/Boogie-branded 6L6GC STR440 poweramp valve is a Ruby Tubes 6L6? It also has "10", "AC", & "GRY" printed along the bottom of the side. Just went to the store and bought a matched set of 6L6 GC STR440. The unofficial Hot Rod Deluxe page put 5881's in the "grey area" list. I think I read here somewhere the 440's are chinese? Are they Ruby's? I have a set of =C= 6L6GC's I'm going to throw in for comparison. They hold their own against my vintage quads of RCA, GE and SED Winged C. The Gear. Dec 13, 2005 · My Dual Rectifier Trem-O-Verb just got retubed with MESA STR-440 power tubes and they are color coded RED. The Blue/Green Mesa labeled ones are the only STR-415's and are within Mesa spec. 30 watt rating for 6L6GC types), uprated anode plate coating for better heat transfer, high grade nickel anode plate construction. I finally got to physically check it out and it turned out to be NOS 6L6GC tubes! Matched pair from the Tube Store. Other Stuff. Feb 14, 2020 · An original 6L6G cannot necessarily be used in a circuit designed for 6L6GC; the 6L6GC has higher ratings. These are labeled as an STR tube. Tung-Sol 6L6GC-STR (left), GE 6L6GC (right). Tube Amp Doctor 6L6WGC-STR (discontinued) 5. The brand is gone but it has a 6L6GC USA labelled in grey on it. 6L6GB vs 6L6GC vs 5881 6L6GB vs 6L6GC vs 5881. Some folks like the JJ tubes Jan 22, 2021 · They compose themselves with slightly more crunch at higher volume levels, and are great to use with bass amps as well. Also, there is no difference in price (41. Further, some The Tung-sol 6L6GC-STR tube is a true 6L6GC vacuum tube that is rated for plate voltage up to 500V and up to 30 watts of power. The 12AX7 tube is another one with good new production tubes being made, imho. 6L6 GC STR 440 colour codes 6L6 GC STR 440 colour codes. Would probably match up well with HRW’ Mar 5, 2005 · Amplifier Discussion Forums. Almost any older production 6L6GC-RCA, GE, Phillips is going to sound good and there were a LOT of them made over the years. I really like the less volume before breakup compared to the Jan Philips Jul 16, 2001 · The next best sounding one is the Philips/Sylvania 6L6GC STR which was widely used in the 70's and 80's by all the major guitar amp manufacturer's. 0 ma, about 55%. Silky highs, defined, deep bass and lots of headroom recommend the TAD 6L6GCM-STR REDBASE for lively clean sounds as well as a powerful broadband Sep 21, 2019 · Today I replaced old GE 6l6gc tubes (in good working condition, though) with new matched Tung Sol 6l6gc str. 95 each) has been in my stash for five years. The cleans on my Tremoverb with them are really big and juicy sounding. I even gave them a bad rap on a couple of websites due to lack of clean headroom. Hard to tell which it is. More Information From what I've been reading the HRDx can only use 6L6GC's. My favorite 5881’s in them are the JAN Philips ECG’s, but all the US ones sound good. That said, I've had newer-production 6L6GC's draw more current than my old 6L6's, so the bias will need to be checked. str 430 was Sovtek 6L6WXT+. Aug 23, 2006 · JanPhilips 6L6WGB's vs EH 6L6GC's. 1st pic - 6L6G "coke bottle" 2d Pic - 6L6GC "STR" Mar 25, 2008 · For hard rock tones I prefer the JJ's 6L6GC's or better yet KT77's or SED 6L6GC's, but the TADs are good sounding tubes especially for clean tones. Jan 27, 2011 · jefrs, thet English advertisement. Oct 17, 2007 · TAD 6L6GC-STR Moss was kind enough to include these tubes in my D'Lite 44 kit. 2k, 6. Reactions: Ribboz , ultimatemetalguitartones and Exo-metal Hoffman Amplifiers Tube Amp Forum, 6L6 cathode bias. The kit info said they came with the Winged C's 6L6's but Moss told me he has been leaning towards these for the 6L6 apps. My standard of comparison for the 6L6GC is the RCA black plate. Large Image: 6L6GC STR Tung-Sol specifications (PDF) Mar 3, 2022 · Forums. Big bottles. I hope this article has clarified some of the differences between these amp tubes. Here's the RCA data sheet for the "6L6". Very similar plate design. The 6L6 has a number of variants,6L6, 6L6G, 6L6GB all of which are 19 watt tubes. Jan 15, 2012 · I love the TS 6L6GC STR and while it sounds great in most every amp I've tried it in, there's one other option you should consider; the TAD 6L6WGC. die werden echt gut gematched, was dem PSRR zugute kommt. 00. Jul 8, 2020 · The 7581 is mil spec of the 6L6GC. I have found a lot of topics regarding TAD 6L6GC-STR but not a lot about 6L6GC-SVT. Dec 14, 2022 · AudioKarma Audio Forums. Lastly, feel free to leave a message in the comments below if you have questions about this or another guitar-related topic! As for the manufacture: they will all read "6L6GC USA" at the top. Physically, this tube is a kissing cousin the Tung-Sol 6L6GC-STR. Feb 15, 2009 · JJ's are good sounding 6L6's. Feb 1, 2019 · I'm trying to understand the 6L6GC tube structure and power ratings. Not bad in the JP2C but low end is not as aggressive as the STR440. The Tung-Sol name and trademark have been acquired by the New Sensor Nov 1, 2016 · The Preferred Series 6L6GC is an in-house design from www. Learn more Mar 17, 2021 · The TAD 6L6GCM-STR REDBASE combines the structural advantages of the robust American Philips / Sylvania 6L6GC, also known as MESA 6L6GC-STR415, and the sound quality of the legendary RCA 6L6GC tubes. Here is a weird idea. The very very early ones are Fender labeled (I have some of those) and are labeled with silver and read STR-387. str420 was actually a Shuguang 5881/6L6GC/6L6GCR tube. Mar 13, 2006 · Some recent developments in both types--the new "Tungsol" KT66 appears to be a (decent) Russian 6L6GC repackaged in bigger glass w/metal base, and not a true kinkless tetrode design. JJ 6L6GC vs. AS noted above, the Svetlana brand name is owned by Mike Matthews of New Sensor fro purposes in North America, and the products talked about in that ad to which you linked Jun 19, 2018 · I use Tung-Sol 7581As in the push pull class A amp I just finished building, and I do like the 7581A's very much. What is very often true is that there is a spread in characteristics, these days often up to an unacceptable 25%, even with same brand ones. I've also been curious about the TAD 6L6WGC - STR short bottle. That should be a clue . Fender wanted a valve that could operate with reduced microphonics when placed upside down. Maybe I won't realize any tonal improvement benefits and maybe I will. Jul 30, 2012 · TAD 6L6GC-STR - Very close tonally to the JJ 6L6GC with a bit more going on and easily justifying the extra cost. I needed to replace tubes 2 and 3 on my DR. 6L6GCM-STR REDBASE TAD PREMIUM Selected is the best 6L6 tube. Jan 9, 2010 · Forums ; Perform ; Amps ; Tung-Sol 6l6GC-STR anyone? Tung-Sol 6l6GC-STR anyone? By primeholy January 9, 2010 in Amps. I play primarily blackface style clean with this amp, for surf, jazz, Gilmour style, whatever. 18. If it is too hot, the tubes will not sound so great. Diese Daten sind bei EL34 und 6L6GC unterschiedlich. Möglich also, dass die 6L6GC überlastet wird. Dec 10, 2012 · So what do you like out of the new production 6L6 tubes? I've read a lot of good reviews of the Winged C SED SV6L6GC , some say they are as they get even as good as the old production. 5. I changed the GC's in my HellHound with the WGB's and hear what I hear as a bit warmer and a bit earlier overdrive. It would be weaksauce for a 60s Vibroverb, however. Sep 29, 2015 · The Tung Sol 6L6GC-STR starts to change character at this point. Wenn man keine Lust oder Ahnung hat, seinen Verstärker anderweitig zu seinem Sound zu bringen, dann kann man auch 6L6GC reinstecken und den Ruhestrom dementsprechend einstellen May 3, 2007 · If all goes well tomorrow I should be in the market for a quad of 6L6GC tubes. 95 from Apr 8, 2024 · Just a data point. STR standing for Special Tube Request. But I really have no complaints with the stock 6L6GC-STR. Oct 21, 2005 · STR, depending on who you talk to, stands for "special tube request" or "special test request". May 1, 2024 · 6L6 STR 445 - These are JJ 6L6GC tubes. Amp Central Station . I was very surprised how warm they sounded with great bass and overall detail. I've wanted to try the SED winged Cs for ages, but recently heard good things about t Jan 2, 2017 · Many Russian 6L6 equivalents (19W) were relabeled 6L6GC, and of course they wouldn't last at higher voltages and dissipation levels. TAD 6L6GC. 6k and 8k (pairs), of EL34’s vs 6L6GC. The TubeStore Preferred series 6L6 are nice. Mullard 6L6GC - First off, I should state that Mullard never produced a 6L6GC tube. So I'm just curious what every one thinks about these tubes. Anyone try these in Apr 13, 2021 · 7581A is the long life, high grade military version of the infamous Sylvania 6L6GC STR 387. excellent tube,thank you TAD Oct 5, 2014 · Review – JJ 6L6GC Tube October 5, 2015; Review – Tung-Sol 6L6G Tube September 29, 2015; Review – Tung-Sol 6L6GC-STR Tube September 29, 2015; Review – Svetlana 6L6GC Tube September 29, 2015; Review – Winged “C” / SED 6L6GC Tube September 29, 2015; Review – Mullard 6L6GC Tube September 25, 2015; Review – Preferred Series 6L6GC May 7, 2010 · Zusammen mit der Tatsache, dass ich noch keine 6L6GC gesehen habe, die so gut entwickelt war, wie die Svetlana EL34, kann ich mich also nur für die EL34 aussprechen. Thread starter highwaycruiser; Start date Dec Nov 20, 2019 · Does anyone know the brand and model of the Mesa 6L6 str 441 as well as the other Mesa 6L6 offerings (6L6 str 440, 6L6 str 445, and 5881 str 425)? Have any of you tried the 441 tubes in place of the 440? Thanks for any input. And 6L6WXT? Oct 12, 2012 · Sylvania 6l6gc, Boogie STR 387, Jan Philips 6l6gc are all very similar, Sylvania products, but the most powerful 6l6 type is not the gc, it's a mil spec tube called the 7581a, simplifying explanation it's a 35 watt 6l6gc. When i was first introduced to the concept of tube rolling, I thought it was on the level of different brands of the same tubes, or different construction of the same tube (plate length, coating type), or different tubes in the same family - 12au7 vs. Feb 16, 2023 · This tube is similar to the Mullard or Tung Sol 6L6GC-STR. 99. They are currently in production as the TAD 6L6GC-STR “Blackplate,” JJ 6L6GC, Electro Harmonix 6L6EH and many others. Not quite as good as the best NOS but still really, really close. You can go up from the lower rated 6L6's to a GC variant. The 7581A maxes at 35 watts. The power tubes are 6L6GC-STR I looked up the price on all these tubes at the tubestore and holy cow these tubes are expensive for current production. The 6l6 in that application might very well fry and die, and in the throes of dying might also cause some need for amp repairs. I'm still far from being in need of a power tubes swap in my amp but looking for potential options. Amps and Cabs I would consider the Tung Sol 6L6GC-STR. Both excellent and recommended. But I can't find those particular ones. May 2, 2022 · I need replacement tubes for my Mesa 2:90 and the current power tubes are the Mesa Boogie STR 420 6L6GC with the color code GR BLU. Some diagrams clearly show 3 grids, others only 2. Dec 7, 2018 · Great for guitar amps loves to rock & roll. Tried to grab some but they are on back order. This is a full, warm tube with tamed highs and rich mids. Jun 24, 2018 · Re: Tungsol 6L6GC STR Obviously having adjustable bias is ultimately more flexible, but one neat thing about their fixed system is that by simply choosing the pairs with correct plate-voltage it allows many different tube-types to be slapped right in and tried without having to re-bias for every change. Thread starter coyoteblue; Start date Mar Feb 6, 2011 · Re: Sovtek 6L6WXT+ vs. Jul 22, 2002 · This is the high grade military version of the famous Sylvania STR 387. Ok, that's not the result that many of us were hoping for, that the Tung-Sol's would be able to go toe-to-toe with the GE's. This is called the "Wagga Effect Feb 14, 2020 · Comparison of the two original TAD 6L6-tubes with a jazzy sound done by Markus Fleischer played through our handwired TAD Blackface 45 Reverb amp. However, Torres Engineering. When a buyer goes to the tube maker and delivers a specific set of specifications the tube goes into production as a S. I'm quite pleased with how it sounds but I have a few bucks to throw away so I thought I'd look at putting a pair of NOS tubes in it. Just remember the impedance will always change between tubes even if they are the same (example is one 6L6GC is never the exact same as another 6L6GC just like everything else in the world). Mar 14, 2011 · Peavey has 6L6GC / STR-387 (Super 6) on their web page 2 for $35. The 7581A was made to have a higher plate dissipation of 35 watts, where all other 6L6GC types have a 30 watt rating, Philips Sylvania uprated anode plate coating allowing better heat transfer. Aug 27, 2021 · A friend of mine gave me what he thought were TAD 6L6WGC-STR tubes. Feb 4, 2009 · I have a few of those myself, and yes, lots of late production Sylvania 6L6GC's ARE true 7581's. Sources one of the JTM 45 forums and Lord Valve. 4. He knew I love TAD tubes so gave this to me. nginx/1. Dec 22, 2014 · The 6L6GC tube, however, is a different breed of cat. It could be due to difference in bias. I have a very small combo self made, with Chinese tubes, one 6L6 and two ECC83, 8" Jensen and solid wood case open backside. I can never remember which ones came out first. Sounds a lot like a quality 5881, warmer, darker. Not sure about the 'G'. 5. I thought about buying the new Tube Amp Doctor 6L6GCM-STR REDBASE power tubes but TAD is having problems coming up with plate current values that match the STR 420's with color code BLU. Sep 25, 2015 · Review – JJ 6L6GC Tube October 5, 2015; Review – Tung-Sol 6L6G Tube September 29, 2015; Review – Tung-Sol 6L6GC-STR Tube September 29, 2015; Review – Svetlana 6L6GC Tube September 29, 2015; Review – Winged “C” / SED 6L6GC Tube September 29, 2015; Review – Mullard 6L6GC Tube September 25, 2015; Review – Preferred Series 6L6GC Nov 1, 2016 · The TAD 6L6 WGC-STR (USD $28. I think the 5881 may match one of the lower power versions of the 6L6. 6L6 STR 441 - These are Russian, and most people believe that these are the Tung-Sol 6L6GC-STR tubes, which are part of their reissue series. The amp maker recommends 35 mA on her amps with these. The two new Russian Offerings are: 6L6 STR 441 - as far as I can tell, these are rebrands of the "Mullard" 6L6GC tube. Jul 9, 2014 · The GE data sheet says the 7581A is interchangeable with the 6L6GC. style 6L6 plate design and a shiny black plate material they look like American manufactured stock. Dec 15, 2019 · I’ve run them in every possible way. I guess TAD just gave these tubes the WGC-STR designation since the Chinese made tubes where no longer available. Going on a year. There were no issues with them but on a tube rabbit hole dive fueled by some folks here replaced them with new STR-441s GRYs in the outer sockets, STR-440 GRNs in the inner sockets. It had a nice warm quality along with good detail. Very smooth and balanced frequency response. Both max at 30watts. This TAD 6L6GC-STR combines the famous reliability of the american made Philips/Sylvania STR series (also known as MESA 6L6GC-STR415) with the black-plate system of the highly regarded vintage RCA 6L6GC tubes. Supposed to be closer to the STR415. And if you want to read more about amp tubes and how they affect your guitar’s sound, check out: 6V6 vs EL34. -----Blonde Tremolux with GE 6L6GC/7581A tan based. Same tube as the Ruby 6L6GC-MSTR ($20 each Feb 23, 2023 · I just a/b’d these tubes in my Mesa Boogie 5:50+ Express. if your amp takes 6L6gc's, any mesa 6L6 will work. Which is a good thing. It's entirely possibly you'll destroy your 6L6Gs (specifically, the screen grids) if you install them in a circuit designed for 6L6GC. I've never had this brand before. The Tad 6l6gc-str is a nice sounding 6l6 aswell. The guy who retubed my MESA is a certified MESA repairer and from what I understo After a few weeks having a new set of Chinese 6L6's in my Mark IV I have to swap them out. It seems any tube labelled a 6L6GC should be constructed in a similar way. JJ 6L6GC Datasheet. Using the old school U. Total max dissipation is 24w compared to 30w in a 'GC'. I assume your PA head uses the 6L6GC. R. TAD 6L6GC RCA 6L6 Black Plate vs. Tung-Sol 6L6GC-STR JJ 6L6GC vs. Anyone know how these would compare to the original Sylvania 6L6GC/STR-387 tubes? Feb 18, 2009 · Hi Alan. 6L6WGB is the designation for 5881, which, in its originally-designed form, dissipates less current than a 6L6GC. This is a 6L6 - based amp (self-biasing design, Chinese-made - like so many so-called "high-end" audio nowadays), and one of the ouput tubes quit on me. Sylvania redesigned the valve specifically for Fender hence the term STR was applied to the valve which means special tube request. 5814 for example. The tone is rich and full bodied, big, dyanmic and extended at the frequency extremes in the guitar amp -- but that doesn't tell you much in terms of audio -- and the tubes have been excellent in terms of durability, which is not always the case with new production hey, welcome the mesa str 430's will work. Svetlana 6L6GC: 4. I know you will find confusing reports about it on the web, some claim the EH 6L6GC is an upgrade of a Sovtek 6L6WXT+, but that is inaccurate, since the two tubes are the same except the relabeled logo. And I put the old GE tubes back. Base, internals, micas and spring clips are virtually identical. 40. What I would hope for is some longevity over current Feb 9, 2013 · Been reading up on different 6L6GC power tubes for my Mesa Tremoverb head and seen a lot of guys highly recommending the TAD 6L6GC-STR's, anyone have luck with them or thoughts on them? Also looking to get new preamp tubes too, any suggestions? Seen a lot of people saying to put a Tungsol 12AX7 in V1 first. Start new topic Mar 26, 2010 · Marshall 6100LM , and i was told about another brand from a pal on another forum , so i took a chance on them and i was Blown away at how good they sounded !! the best output tube i have heard in my Marshall ! TAD (tube amp doctor ) 6L6GC -STR RCA STYLE BLACK PLATES ! If your a Marshall guy like me , you may want to look into them ! May 3, 2014 · Because it just so happens that I'm currently using the STR-387's in my S-C ASR-444 which originally came with 7027's and stated as putting 420v on the screens and 430v on the plates. I also quite like the Beijing 6L6GC’s in my Recto’s, but I still overall like EL34’s or 6CA7’s most in Recto’s Jul 4, 2011 · In these Quad, I tried electro-Harmonix 6l6gc, JJ 6l6GC, Sovtek KT-66, and the Gold Lion are the one I find (according to my ears) that sound the best. Still need to test the bias on the Mark V. Die EL34 verträgt höhere Anodenspannungen als die 6L6GC. There won't be any difference in sound or output. Clear top end and the bottom end is looser or spongy feeling. The base looks like the Sovtek 6L6WXT, Electro Harmonix 6L6GC. We also have ongoing monthly operating expenses. 3. Jan 27, 2011 · Amplifier Discussion Forums. Dec 1, 2022 · I found current production Tung-Sol of their 6L6G "coke bottle" tubes worked extremely well in my McIntosh MC240 with a great soundstage. The result is not unpleasing and they are rated for more output than a 5881 or 6L6WGC so by all means experiment. Apr 21, 2008 · Hi, I am about to buy a quartet of TAD 6L6GC-STRs for my Roadster. The closest Mullard made in England would be the KT66 and KT77. The 7581A was made to have a higher plate dissipation of 35 watts, where other 6L6GC have a 25 watt rating. Bass is not the best but it’s not flabby either. The Sovtek wxt+ is a better match for the Mesa IMO. that I purchased from ebay the other day. Since, I already increase the cathode resistors, the 6L6GC were within their dissipation range. Switched back to JJ's and SED's and there is a world of difference. 6L6WGC sounds more hi-fi, brighter, almost acoustic until driven. EHX 6L6GC The Sovtek 6L6WXT+ is exactley the same tube as the EH 6L6GC. The STR 387 was designed for Fender by Sylvania. Oct 27, 2006 · The ' red base' 6L6WGC-STR tubes are most likely Tung sol 6L6GC tubes that are made in Russia. I believe that the Sylvania STR-415 and GE 6L6GC(made in Owensboro,KY plant)were built to near 7581A standards. The JJs are dark and smooth with strong lowend. Jun 25, 2007 · That's what came stock in my Mark IV, and I really don't want to change the sound much at all. The 5881s break up sooner, have less power, less headroom I really like the 5881 set better the 6L6 are louder and tighter. We have a great article about 5881 vs 6L6 here! FAQs Do I need to rebias my amp when I change tubes? Yes, you should always bias your amp when you change tubes. Most modern amps are designed to use a 6L6GC, another variant that is a 30 watt tube. Tube Amp Doctor 6L6GC (discontinued) 5. Come home to put them in and see that the other 2 tubes in the amp are 6L6 GC STR 420 Dec 16, 2009 · Good Evening I just replaced the full complement of tubes in a small Single-Ended Triode amplifier I have. 70's made Sylvania STR 6L6GC's will also operate at 7581 specs. and therefore your first sentence----"Svetlana =C= 6L6GC (yes, that's right, not SED)" is misleading to those of us here in the USA. I'm going to avoid the NOS/used-but-still-spiffy route and get something currently in production. Apr 2, 2007 · The first of my tubes arrived yesterday a short fat pair of GE 6l6GC. I've a spare set and have wondered if I should have gotten the TAD 6L6WGC-STR to try out. Wagga Wagga is famous for producing a vast proportion of Australia's best athletics. The 6L6GC is the typical power amp tube of US guitar amplifier brands. The 6L6GB is similar to the more common 6L6GC, but has lower ratings (maximum plate and screen voltages 360V and 270V vs. com. Uprated anode plate coating and the famous double getter made this tube an instant success. I think they are "rounder" sounding than the Russian tubes. I don't have a curve tracer, but the STR's I have look and act just like their 'younger' 7581A siblings. 30W and 5W). The TAD's are nice too but more "vintage" in their vibe. As far as i can see the only difference between them is the longer glass bulb on the 6L6GC-STR, which should give it a bit more low end and low mids, which would be very cool, I'm trying to get more punchy bass and kill some high mids. The EL34’s always made at least 10% more clean rms output and peak output. Would you advise for or against JJ 6L6GC Tung Sol 6L6GC STR or recommend something else? Thanks. I think the 430's are better tubes than 440's but I have no experience with them. A pair of NOS Tung-Sol 5881 tubes, properly biased, is an excellent set of tubes for a 5f6a Bassman amp. Tubes . The Tungsol 6L6GC-STR is a good choice for any new or vintage guitar amp. Anyway, the 6l6GC has a 30 Watts maximum dissipation , and the KT-66 is 25 Oct 12, 2024 · I've used the 6P3S-E in the silverface Bandmaster head unit and blackface Pro Reverb combo. Chinese made ones are all over the map - some are very good. Start new topic; Recommended Posts. It is a newer, revised version of the TAD 6L6 GC -STR (I reviewed the WGC , a slightly different tube). Here's a comparison I did: Mesa/Boogie 6L6GC power tube comparison. It would appear that you are indeed correct. Jun 19, 2007 · 807 vs 6L6GC One of the main improvements of the 6L6GC over the earlier 6L6's (6L6, 6L6G, 6L6GA, 6L6GB) as well as the 807 and 6BG6G/GA (which are essentially 6L6's with plate caps and higher plate voltage ratings) is that the 6L6GC uses a special 5-layer plate material that has copper in the core, so that the heat is spread out. Jan 15, 2021 · Not sure any CP 6L6's are going to sound exactly like the winged C tubes. Only the Mullard and Philip's made 6CA7's are Pentodes and the RCA are Beam. Tung-Sol 6L6GC-STR. Étant un fétichiste du son et des amplis à lampes, j'ai également testé en parallèle des quads Electro-Harmonix 6L6EH et JJ-6L6GC Hot Grade. Be sure to check out our review of the Tungsol 6L6GC-STR power tube. Oct 5, 2015 · The TAD 6L6GC-STR is matched for plate current and transconductance and has the look of an old Sylvania. Jun 19, 2011 · When I first got my MC40 amps they had Ruby 6l6GC STR tubes that are exact replicas of the Sylvania "fat bottle" 6l6GC. Pro with 5881/6L6WGB. Jan 20, 2019 · I took an educated guess and biased them at . Others mentioned as good are the new Tung-Sol 6L6 STR and 7581 sets. Basically what this meant back in the day, is a large OEM customer would request the tube factory to test or tweak an current production tube for a specific operating condition or parameter. Sep 9, 2020 · I like JJ tubes in general but I dont love there 6L6s . Nov 25, 2022 · I like 5881’s for their extra growl, mids and richness they have over 6L6GC’s. Jan 24, 2012 · Svetlana SV-6L6GC Nice balanced, smooth sound Not as bottom heavy as TAD 6L6 and not as bright as the Winged-C Clean sounds are a bit chimey Overdrive thick with lots of sustain Effects work well through these and tube doesn’t much out from effect signal Good in Marshall JTM45 and Bluesbreaker reissues TAD 6L6GC-STR Special Tube Request design Cookies & Privacy. They're far too noisy and I just don’t like their tone. If you use a "standard 6L6" as you called it or any of the earlier variants I mentioned they will not last and may blow on the first chord Oct 8, 2018 · I ended up getting a pair of STR-441 and a pair of STR-445. 8k, 4K, 4. Apr 14, 2018 · The fresh GE 6L6GC's absolutely crushed the new production Tung-Sol 6L6GC STR's, and it wasn't even close. Jul 9, 2014 · The 7581A is the high grade military version of the famous Sylvania 6L6GC STR 387. Jan 7, 2020 · The 6L6GC has max plate dissipation 30 Watts, max 500V; and max screen dissipation 5 Watt, max 450V Some guitar amplifiers do abuse the output tubes. These are upgraded to 6L6GC specs for improved reliability; however, are more expensive than the current production Tung-Sol 6L6GC "STR" (Special Tube Request). Went back and fourth with the 88’s and decided I was liking the sound of the 6L6GC better overall and, hey, new ones are about $100 cheaper per quad! I bought a quad of Tung-Sol 6L6GC’s and couldn’t be happier. Oct 26, 2019 · Quick questionI've search this board and can't find an answer so I hope to find some help asap. The two Apr 4, 2016 · I've been happy with the TAD 6L6GC-STR. TAD 6L6GCM-STR. 4K, 3. Jun 16, 2008 · Circuits Forum Home Automation Forum Projector Forum. The main damage would be to your transformer, your speaker or the tubes themselves. Reactions: The-Kid and MHG. Nov 7, 2015 · In that context those TAD 6L6WGC-STR's are the best 6L6's I've used in that amp. 5881? Theme . . 5W vs. Thread starter gatya; Start Feb 27, 2012 · I've had a tube in 2 different sets of rubys on 2 different amps blow out, taking an SGR the first time. The Redbase 6L6GCM is beefier in build. Standard 6l6gc is 30 watts. Regarding the contentious subject of the 'sound' of tubes, I will not touch on this thorny belief. I cannot see any difference. Apr 10, 2019 · The 6L6GC has 30W anode dissipation, plus in most makes a rather more rugged internal construction. Even a bit low I'd say. Posted there was a listing for five RCA 6l6 black plates. I like them (7581A's) very much in hi-fi gear. The TAD 6L6GC-STR are a copy of the old Sylvania's and sound good. The Acoustic amp that I pulled the STR's from was rated at a 100 watt output, so I see what you're saying about "big iron" amps. Using 6L6GC tubes in an amplifier that was designed for the earlier versions of 6L6 will not hurt anything if you can adjust the bias currents. However, there is a notable difference when used in the Mark V. 500V and 450V, and maximum plate and screen dissipations 19W and 2. It does not sound as big as the Sylvania --- but has a similar timbre. 0 (Ubuntu) Jan 1, 2012 · Tung Sol 6L6GC-STR Initial Impressions Quick Review « on: April 22, 2012, 08:53:17 PM » The Tung Sol tubes came in the other day, so i dropped em in and biased em at 39. Forums ; Perform ; Amps ; 6L6GC vs. More Information. This is not a reissue, but a brand new tube. FWIW: 6L6WGA is a 5932; it and other 6L6 variants (6L6, 6L6G, 6L6GA, 6L6GAY, 6L6GB) are rated to dissipate lower current than 6L6GC, and probably would not hold up in the In addition to the usual Russian 5881 STR 425 and Chinese 6L6 STR 440, there are now two new Russian Tubes, and a Slovakian one, which is pretty obviously a JJ, the 6L6 STR 445. I know all of this is subjective so the following reflects only my interpretation - In my amp, the GE's sound a little brighter and tighter compared to the RCA I have which I would describe as slightly warmer and looser to the GE (lol). 6l6gc is rated for higher voltage and current for more wattage per tube pair in circuit than the 6l6. Nov 22, 2006 · I have some Tung-Sol 5881s in my amp I like, but they have a little too much headroom and are a little too aggressive. A lot of people like these for various uses. I called the local Guitar Center close to me and they have Groove Tube 6L6GC Gold Series (Mediums) in stock matched sets for $54. IMO from my own listening tests comparing these two tube types in my hi-fi system. Some tube data sheets state it is a beam tetrode and others state it is a pentode. Feb 20, 2007 · And depending on the Cathode or Fix bias it could vary. The short answer is yes. If you need some data sheets of popular 6L6GC tubes by brand, we have included a couple for you below. The EL34’s were either RFT, Groove Tubes EL34M, SED winged C or new production Tung Sol EL34B vs JJ, Groove Tubes 6L6GE clear tops and Tung Sol 6L6GC STR. Feb 26, 2017 · 6L6GC is what your modern 6L6 amp is almost certainly expecting. I suspect the Philips 7581A IS the old STR design. S. Thread starter cray; Start date Dec 13, 2022; Tags tubes replacement C. They are significantly more expensive than STR but being Feb 6, 2011 · No love for EH 6L6 tubes, just re-labeled Sovteck, and I usually don't use them. RCA owned the rights (patents) to focusing the electrons in to beams, so Philip's and Mullard (Europe) made the 6ca7 as a pentode, and Sylvania, RCA, Philips ECG (USA, Canada) are actually beam tetrodes. This tube is similar to the Tung Sol 7581A. Aug 4, 1998 · Fist, a 5881 is not necessarily a direct replacement. It has higher plate dissipation (35 watts vs. 6L6 vs 6L6GC: Conclusion. Oct 5, 2015 · Review – JJ 6L6GC Tube October 5, 2015; Review – Tung-Sol 6L6G Tube September 29, 2015; Review – Tung-Sol 6L6GC-STR Tube September 29, 2015; Review – Svetlana 6L6GC Tube September 29, 2015; Review – Winged “C” / SED 6L6GC Tube September 29, 2015; Review – Mullard 6L6GC Tube September 25, 2015; Review – Preferred Series 6L6GC Feb 22, 2013 · Tung Sol 7581 also sound quite similar. Really nice. First, it's an all-metal tube. It's running two 6L6GC tubes now, they're fine but a couple of years old so I want to keep them for spares and put some new tubes in the amp. STR443 alternative to the STR440 Chinese Shuguang tube. Jan 15, 2021 · The TAD 6L6GC-STR are a copy of the old Sylvania's and sound good. Jul 21, 2020 · FYI these new production Tung Sol 7581 tubes have a thicker and slightly fatter bottom end than the company's 6L6GC-STR's, and they might also have a slightly relaxed top end. This is one of the few tubes I’ve tested where I would start at 18 watts idle (60%) and then slightly adjust up and down to find the spot your ears like best. It is a higher-power tube, still. Pretty even, round top solid bottom end. Visually comparing a picture of a TAD 6L6 to a Mesa STR-440 leads me to believe they are the same tube, and both of them seem to be from Ruby Tubes. 5963 vs. Jul 17, 2022 · They are TAD Rebase 6L6GC tubes. Which do you prefer? My Roadster came with GRN STR440's. May 11, 2007 · TAD's website and JerryP suggests the TAD 6L6WGC-STR but Doug at Doug's tubes suggests the 6L6GC-STR. The Preferred Series is intended to improve on the TAD GC. Another NOS tube available is the 6L6WGB which is very similar to the 5881 in that it is a smaller bottle version of a 6L6 that doesn't like to see much more tham about 500 volts on the plates. Jan 9, 2020 · So I noticed all the tubes, power, pre and rectifier, are TAD. My Trem-O-Verb has a bias mod so I don't "need" to use MESA powertubes. Unequaled clarity and complex harmonics, plenty of sustain and depth. RCA 6L6 Black Plate vs. This website uses cookies to ensure that you get the best experience. And if they were designed for 6L6GC, then use 6L6GC. Grüße, Thomas [Beitrag von GüntherGünther am 02. 5881? By NotDead November 11, 2008 in Amps. If the tubes already in it test ok and are reasonably matched (10%) for mutual conductance, they are probably ok. str440 is Ruby 6L6GCM-STR Jan 19, 2016 · The SED 6L6GC was - at one time - my favorite budget new production tube. cray autotranslate Magnificent tube,very articulate sound,perfect medium,tight bass not overwhelming,soft treble is present,vintage sound,creamy overdrive,less dark than the Black plate model which I prefer,but this tube is equivalent to the 6L6GC GE,it improves the sound of your amplifier,we find this vintage sound of the blues. They have powerful deep bass and a clear, airy top end. Dec 1, 2014 · - TAD 6L6WGC und 6L6GC STR. But you should not go the other way and use a 6L6, 6L6G, 6L6GA, or 6L6GB to replace a 6L6 GC. They sound rich, tight and balanced to me. Welcome To the Hoffman Amplifiers Forum May 17, 2025, 11:05:20 pm: Welcome, 6L6** vs 6L6GC: I have a Tone King Sky King. IPS Default (Default) Jan 9, 2009 · Also in theory, 6L6G's and 6L6GC's have identical characteristics (power-handling capability aside), so the original bias level should sound as good with either one, even though it's way below 70% when 6L6GC's are installed. Pity. So far, tubes that sound great in the Mark V are the SED =C= 6L6GC, SED =C= EL34, TAD6L6GC-STR, Gold Lion KT77. The new "Tungsol" 6L6GC-STR, however, looks VERY much like a short bottle RCA black plate (graphited plates Nov 11, 2008 · 6L6GC vs. Apr 30, 2015 · Yeah. I also had noise problems with the red base TAD 6L6GC. At least Mesa is looking into other resources due to the conflict with Russia and Ukraine. Sovtek wafer-based 5881's are great tubes as well, in the right amp. com is selling a "blues set" for the HRDx which includes the reissue Tung-Sol short bottle 5881. I do like Ruby 6L6GCMSTR in my amps. Jan 13, 2019 · Mesa STR-440 6L6GC (Shuguang) ($60 per pair): Very nice sounding tube - well balanced, big fat low end (arguably the largest of any 6L6GC I've tried). The break up an the clean channel is worth it alone but these buggers really rock on the lead channel too. A pair of GE 6L6GC tubes would really sing in that amp. Sep 16, 2010 · I'm shopping for some new tubes for my 1974 Classic 410. Aug 3, 2013 · The 6L6GC is rated at 30 watts plate dissipation and 450 -500 plate volts. In the right amp I guess they could work very well . Anybody have much experience with these? This is my first 6L6 amp so I am drawing on zero exposure to this or any brand of 6L6 tubes. The fender Im not sure . Jun 18, 2019 · The versions that spring to mind are 6L6GC, 6L6G, 6L6GC-STR, and now 7581a. thetubestore. In those amps, the sound is gray plate Sylvania 6L6GC/STR-387. Hi there. I can find STR440's, yeah, but no STR430's. The best Russian 6L6s were relabeled 5881 (since it had a good reputation) and were really equivalent to 6L6GC. Aug 15, 2015 · Circuits Forum Home Automation Forum Projector Forum. Built to the same "Special Tube Request" specs of leading amplifier manufacturers of the 1960s, the 6L6GC STR is a rugged and reliable power tube for use in the most demanding guitar amplifier circuits. MHG Jan 25, 2012 · Wagga Wagga @JohnnyMcCracken I've been around most of Aussieland but never to that part of New South Wales even though the town figures into Australian folklore. The complex 301 Moved Permanently. Happy Fillmore 50 head owner saying hello. It actually has a higher plate dissipation rating, 35 watts vs 30 for the 6L6GC. The moment I turned it on, I heard some loud speaker hums, so I pulled them out immediately. Honestly I remember the days when the black-plate RCA was common as dirt. My V:90 also had a set of old STR-440 YELs and probably a safe bet they were the originals, at least 8 years old. Originally produced by RCA since 1936 as 6L6 tube (24 watts) as a beam-power tetrode with steel envelope, it was further developed into the 6L6G, 6L6GA, 6L6GB and finally the 6L6GC (30 watts), all in the glass version still in use today. Peavey 5150 II. Mark V on 90W, ch 3 Mk IV mode. These both can handle a lot of plate voltage. It’s still going strong and it stood up very well to all the other tubes on review here. Jede Röhre reagiert also anders auf bestimmte Schaltungen. Jan 23, 2007 · You can run 6l6gc in an amp designed for 6l6, but it would definitely be risky to run 6l6 in an amp designed for 6l6gc. J'utilise depuis 3 mois un quad de ces belles petites loupiottes (de petite taille) dans une tête Peavey 6505+ en remplacement d'un quad Ruby 6L6GC-MSTR au bout du rouleau. Eine Schaltung die mit EL34 optimal läuft, wird mit 6L6GC bestenfalls "funktionieren", nicht jedoch optimal passen. One of the reason's I asked about this was because of the Most Musical Tubes thread these tubes were listed separately in Scott's poll. SED / Winged"C" 6L6GC: 4. tmd iyieq fguema osbru tgxlq jgvna vuzrdkz hlflz lhzc ejuvu