The original 6550 tube was a pear shaped high power tetrode designed for power control by American Tung-Sol company. Tung-Sol is the only brand that the KT-120 is sold under. Tungsol does not have KT88 in their lineup, instead they have the 6550. So much so, that I dumped all the others back into the market, and kept every TungSol 6550. A pair of Tung sol KT120's configured in push-pull can deliver power levels of 150 watts or more. How reliable have they been? As a drop-in to existing 6550/KT88 amps, the KT120 is impervious to overload, delivering peak power with extreme reliability and almost infinite tube life. Tung-Sol KT120 Super cool KT88 variant made by New Sensor in Russia. A pair of these tubes in push-pull configuration can deliver power levels of 150 or more watts. $11.19 . Tung-Sol Vacuum Tubes Brands Verdant Speakers Art Audio US Canor Audio AVM Audio Masterpieces Vivid Audio . Russian Tung Sol 6550 are less expensive vs Russian Gold Lion KT88. Genalex Gold Lion KT88. This tube is a drop-in replacement. Groove Tube Gold Series GT6L6GE (6L6GC) McIntosh branded GE 6L6GC (vintage) GE 6L6GC (vintage) Tung-Sol 7581A (6L6GC variant) Tung-Sol 6L6G (6L6GC in a big bottle) Gold Lion KT88; Tung-Sol KT150; Gold Lion KT66; Sylvania 5881 Here's a pic of some of the output tubes I've tried (with various supported rectifier tubes) in my Inspire SEP amp: But of course NOS 6550's are more expensive and rare. The big advantage of the more modern designed Mcintosh amplifiers is the presence of security circuits which shut down the whole amplifier to save the damn expensive thing. #3. Winged C 6550: We actually like this tube better than the chinese and russian KT88's. This had been the best sounding new production 6550 until the release of the JJ 6550. ), tungsol or gold lion?-----For the 6v6s i hear that JJ's are almost 6l6s. It's maximum output power is 100 Watt for a pair. 6550 Tung-Sol specifications (PDF) I have tried and liked SED winged c kt88, and New Gold Lion kt88. KT88, Sep 12, 2016. $12 99. ANOS RCA 6L6G. Assorted NOS 6V6GT/7408. These are as close to the original Genalex KT88s as you could possibly get. Show Details. Ascending order of quality (high to low). I was wondering the same thing. Show Details. The amp went from a good amp to an unbelievable amp. It will produce 75wpc in the Stereo 100 amp. It is likely amp dependent upon which tube sounds better. Sold Out. No worries about the power these tubes draw in my amp. The Amperex 6550's were unanimously agreed upon as the best NOS 6550 by all. Large Image. This tube is a drop-in replacement for KT88s. 6550 tubes were first introduced in the 1950s by Tung-Sol. A matched pair in push-pull configuration can deliver 150 watts of power. The KT88 audio tube is considered to be one of the best sounding power tubes for hifi tube audio amplifiers. A prime example is the Tung-Sol 5881 that was developed as a heavy-duty replacement for . A troll of my own tubes netted the Electro-Harmonix EL34's and 6550's. The other amps used in this shootout were a pair of Parks Audio Eiclone monoblocks. I've been using them in Hiwatt and Orange amps since New Sensor introduced them without a single failure and with great "tone" although 6550 tubes were never noted for all around great tone (if anything these purpose built Tung Sols from New Sensor sound a little . Many tubes that are intended for special applications, industrial, or military use do not use the RETMA standard. $27 99. 1.4k. If you are looking to buy JJ 6550 valves or JJ 6550 tubes, click on the links below. Sovtek and EH 6550: These are the same tube and both are boxy. Show Details. Ranking the 6550/KT-88 sonics. A pair of these tubes in push-pull configuration can deliver power levels of 150 watts or more. Has anyone tried the new Gold Lion KT88 replicas, Tungsol 6550, EH 6550s, Shuang Treasure KT88, EAT KT88, etc? Quick Picks (By Product): Mullard CV4004 , Mullard 12AX7, Electro-Harmonix 12AX7, Ruby EL34CZ, Electro-Harmonix 6L6GC, Genelex Gold Lion 12AX7, Sovtek EL84, Tung-Sol 6L6GC-STR, Electro Harmonix EL34, Shuguang 12AX7B, Electro-Harmonix 6V6GT The 6550 was designed by Tung-Sol, New Jersey U.S.A. and first introduced in 1954. Tube rolling on a Cayin A-88T mk2. 12ax7 decision. Mouse over to Zoom-Click to enlarge. Tung-Sol KT150 kinked tetrode (pentode) matched quad $275 Genalex Gold Lion KT88 kinked tetrode (pentode) matched quad $175 Tung-Sol 6550 beam tetrode (pentode) matched quad $125 Electro Harmonix pentode matched quad $65 Please see the pictures for specs . About a year ago I put a set of the reissue Tung-Sol 6550's into my Trace Elliot V6 bass head. Enter the KT120, the most powerful tube in the 6550/KT88/KT90 family. -Bill. These are a freely-interpreted rethink of a classic Eico design from the 1960's. KT88/6550 Single Ended Amplifier 5th Jan 2014 Note: 6550 and KT88 are same charactor so each other you can use. The Tungsol 12AX7/ECC803-S tube has gold plated pins and is low noise and low microphonics. The KT88 is more powerful than a 6550 and I think it is not as sterile sounding as a 6550. This is the same tube as the PentaLabs KT88SC. These tubes are great! Enter the KT120, the most powerful tube in the 6550/KT88/KT90 family. We've been using these in a variety of amps here with fantastic results! There is some test data on youtube. In KT88's, the most common is the Electro Harmonix which is great, the Mullard reissue and Gold Lion reissue which in essence are the same tube and are superb. Price: $62.00. KT88's generate a lot power, handling significantly more plate voltage than other power tubes. Good-guy Jon at Thetubestore.com kindly loaned me the Genalex Gold Lion KT77 and Tung-Sol KT120 tubes. Because of it's superb test results, and modest . Re: Reissue Gold Lion KT88 Vs Tung Sol 6550 by Tube Nube Sun Mar 08, 2015 11:46 am I would think it would take more than hyper-matching to coax sov teks to sound better than GL kt-88, but I'm open to persuasion as well as bribery for that matter. Sovtek 5881 / 6L6WGC. Dynamic range, clarity and transparency, midrange to die for and highs that reach the sky. I have Gold Lion KT 88's as well. It is one of my favorite tube sounds. In general, the KT88 tube has a magical mid-range similar to the smaller EL34 tube, but with low and high end extremes that reach much further.The KT88 was invented by Marconi-Osram Valve Co. and became quick competition for the USA made 6550 tube. With a plate dissipation of 60 watts, the Tung-Sol KT120 is a powerful tube in the 6550/KT88/KT90 family. The current production benchmark of the classic 6550. $69.95. The Gold Lion is universally praised. If you like 6550's in your Marshall (many do) this tube would be an excellent choice for an alternate. Tung-Sol 5881. Of these two I think I prefer the SED. $27 99. If you use KT120's DO NOT ship the amp with the tubes installed. KT88 is a beam power tetreode, its anode limited dissipation power is 42W. The KT88 was introduced by GEC in 1956 as a larger variant of the KT66. Owners Discussion Threads; Activity. Tung-Sol 6550 sonics is true to its retro-classic looks, and delivers super low distortion in vintage Class A high power audio amps while generating . Gold lion claim to be better (an are certainly more expensive). Interesting question. And one almost new current production GL KT-77 . Free shipping on orders $105 and over. These are as close to the original Genalex KT88s as you could possibly get. €49.00 *. New Plate Current Tested Genalex Gold Lion KT88 (6550) Vacuum Tube. $239.62. 6550A-STR TAD Premium Matched. If you care about tone, re-tube with Tung-Sol. More options there for brands. $25 99. I really do like the sound and I like the Golden Lion KT more than a JJ KT I also have. Svetlana EL34. KT88 is similar with CV5220 and 6550,they can be replaced by each other. Show Details. ANOS Tung-Sol 6550. In the audio amplifier, the power can be 100W when it is used as push-pull class AB1 with double tubes, it can also be used in electronic voltage regulator circuit. Share. KT120 - In the spirit of Tung-Sol's creation of the 5881 and 6550 power tubes, New Sensor Corporation released the KT120 under its Tung-Sol label in 2010. New Gain Matched Quad of Genalex Gold Lion KT88 (6550) Vacuum Tubes. I replaced old kt88 tubes with Sevetlana 6550c and Tung-Sol 6sn7. All Activity; My Activity Streams . Special Price: $38.95. Kavin's stash). Just looking for peoples opinions and preferences for current issue kt88 & 6550 power tubes. JJ (how about the gold pin? This tube has a tone that is warm and lively with a detailed and balance response. I've tried Gold Lion KT-88's in my Inspire amp, and wasn't impressed with them. 01-29-2012, 06:01 AM. If you ever had a chance to compare one of the best vintage 6550 - the Tung Sol black plates to original GEC KT88 the difference will be jaw dropping! 6550 / KT88 / KT90. My go to KT88 is the Preferred Series KT88 from the tubestore.com. ANOS Sylvania 6L6GC. Product Review - A Comparison of 6550 and KT-88 Power Tubes - June, 2002 Jason Serinus. The KT88 can be used interchangeably with its American rival, the 6550. It was manufactured in the U.K. by the MOV (Marconi Osram Valve) subsidiary of G.E.C, also labeled as IEC/Mullard, and, in the U.S., Genelex Gold Lion. The 6550 tube became quite popular in American audio amps in 1950s and 1960s due to its linearity and high power output. Made in Russia, they look identical to the originals down to the plate structure. Introduction. Svetlana KT88 (Each) Regular price $66 00 $66.00. The Golden Lion KT66 isn't a metal base tube. Regular Price: $42.95. no special re-wiring required! From €432.00 *. Tung-Sol 6L6GC STR. You can see the new Tung-Sol 6550's are performing very well even compared to the Genalex Gold Lions which are much more $$$. In later years, 6550 tubes were used in popular guitar amplifiers, notably in US versions of Marshalls . I have NOS GEC KT-88's and KT-77's (smoked glass ). If you don't need 100w, the KT88 is a good substitute. $124.95. If you ever had a chance to compare one of the best vintage 6550 - the Tung Sol black plates to original GEC KT88 the difference will be jaw dropping! Later, GE and Philips produced straight bottle 6550s. Free shipping Free shipping Free shipping. New production GL KT88's and KT-77's. Also new production Psvane, JJ , Tung Sol . Like all the Tung Sol . The JJ KT88 is an excellent choice for Hi-Fi stereo equipment as well as guitar amplifiers. Last edited: Oct 19, 2020. allied333, Oct 19, 2020. Tung-Sol KT120 - precision matched. https://www.upscaleaudio.com/products/tung-sol-kt120Tung-Sol KT120 - Super cool KT88 variant made by New Sensor in Russia. Yes, I know that there are nothing better than old NOS Tung-Sol tubes for Leslie, but they are hard to find in good shape and matched. I have the best sound with either vintage Tung-Sol 6550's or RCA black plate 6L6GB's. I'm not done tube rolling, so I may find something I like better down the road. Posted March 13, 2019. The =C= has a nice balanced tone . 1 Review(s) $48.95 . The KT120 also draws more filament current from your amp's power transformer. The KT66 is an up-rated version of a 6L6 and the KT88 is interchangeable with a 6550. Genalex Gold Lion KT88 / 6550 - Platinum Matched (Each) Regular price $85 00 $85.00. The 6550 are very neutral and the KT88 have a little more midrange bloom. Svet-6550 (flying C)& KT88 JJ KT88 new production Tung-Sol 6550 Electro Harmonics KT88 (KT88EH) Early Valve Art KT88 On various other amps I've listened to the new production Gold Lion KT88 as well as the NOS, Tung-Sol 6550 NOS solid gray plate, GE 6550 and the Penta Labs GEC copy. Location: Burton,MI. In general, the KT88 tube has a magical mid-range similar to the smaller EL34 tube, but with low and high end extremes that reach much further.The KT88 was invented by Marconi-Osram Valve Co. and became quick competition for the USA made 6550 tube. I have heard that people really like the tung sol preamp tubes. Also, are there any over arching tonal differences between 6550 types and kt88 types? If you care about tone, re-tube with Tung-Sol. Hover to zoom. It can be used in place of 6550 tubes. Genelex Gold Lion U77 / GZ34. The JJ KT88 was voted the best new KT88 and also a KT88 best buy. I also have the Quicksilver Mini Monos and have tried numerous tubes -SED and Tesla EL84, Shuguang KT66, Shuguang KT88, Shuguang 6550, original Tung Sol 6550, reissue Tung Sol 6550, and what seems lik ... 132: Re: 5AR4's revisited (8.88) Posted by g on 2004-01-07, 18:32:48 (24.247.129.245) And then the Tung-sol KT120 which has even more "pop", and because we run them so easy, the tube may outlive you. Reisong YULU M5 KT88 tube Valve Amplifier Single-ended HIFI tube Amplifier Brand New. $20 99. X . Read our reviews or we'll help you with a recommendation. Tung-Sol 6550，市價約 6 - 10 K。 Tung-Sol 是 6550 (不含 KT88) 管中的最頂級製品，細節、低頻都非常優秀。 雖以 50 年代、黑屏最佳，但較晚期的製品也相當不錯。 Gold Lion and Tungsol are selected EH, so better than Electro-Harmonix. They even have gold plated grids, carbonized screen grids, and tri-alloy plates. Sovtek EL84. ANOS RCA 6L6G . Genalex Gold Lion KT77. We burn them in for 72 hours, check for excessive current draw, all that good stuff, then match each tube in circuit at real voltages. China Psvane HiFi KT88. Copy of the original type 3 Tung-Sol 6550 made in the 1960's. Triple getter, carbonized screen, and gold plated grid. With a plate dissipation of 60 watts, the Tung-Sol KT120 is the most powerful tube in the 6550/KT88/KT90 family. $28 99. The main drawback of a KT88 vacuum tube is that it will not add to the crunch when cranking the gain again. The TungSol 6550 Black Plates are by far my favorites. Mullard EL34. $51 49. The JJ KT88 delivers a powerful 42 Watts with plenty of headroom to spare. $22 99. KT120 - In the spirit of Tung-Sol's creation of the 5881 and 6550 power tubes, New Sensor Corporation released the KT120 under its Tung-Sol label in 2010. Tung-Sol 6550 A current re-creation of the classic original 6550, now made in Russia. $44 49. So for these i'm torn between tungsol and gold lion, tungsols being £15 ea and GL being £23 ea. Genalex Gold Lion EL84/N709. The Genalex was voted the best KT88 and the best tube in the shoot out. head driving a Marshall 4x12 cab loaded with Celestion G12T-75 speakers. New Gain Matched Quad of Genalex Gold Lion KT88 (6550) Vacuum Tubes. compared with the 35W of the 6550, the 42W of the KT88, that's a lot of juice! Large selection of NOS tubes. Regulars. Made in Russia, they look identical to the originals down to the plate structure. But, the biggest improvement and surprise was when I invested the 2 6sl7 with Sylvania vt-229/6sl7gt ($100 ea. JJ 6L6GC. JJ / Tesla KT88 (Each) Over the last 2 years , I've had 1 SED 6550 go bang ( bottle split ) with no amp damage . It was the 'better' 6L6, with higher output at the same input signal. ANOS Sylvania 6L6GC ****SINGLES ONLY**** Show Details. 6550 tubes new vs vintage? Image not available. Picture Information. The Tung-Sol was voted the best 6550. As a drop-in to existing 6550/KT88 amps, the KT120 is impervious to overload, delivering peak power with extreme reliability and almost infinite tube life. Call now! This guy tests a bunch of different tubes with an oscilloscope. How really close should be the power tubes matched in Leslie amp for good sound? If so, what do you think about the sound. $69.00. As a result, KT88's and 6550's are produce cleaner tones and have low distortion, making it popular amongst bass amplifiers and high end audio applications. I can run pretty much anything in an Emery amp. 176) Can anyone here comments on the sound of the Gold Lion KT77 and KT88s?. I use the cj supplied Svetlana 6550C SED in my amps. Sponsor News Search KT88 has excellent power handling capabilities and is among the largest tubes in their class. $19 99. $21 99. JJ EL84 / 6BQ5. The reissue Gold Lion KT66 was tested later. . KR Audio KT88 - Paar (2 matched tubes) €447.50 *. I am not certain of the dissipation specs on the reissue TS 6550 or the EH/Sovtek 6550/KT88, but I would guess . So no problems there. With a plate dissipation of 60 watts, the Tung-Sol KT120 is the most powerful tube in the 6550/KT88/KT90 family. 516-314-0357. Goldlions are a complete waste of money, stupid IMHO. Made in Russia, they look identical to the originals down to the plate structure. The Tung Sol 12AX7 has the gain and drive of a Chinese 12AX7 and the pure tone of a Mullard or Brimar." For this tube's test I wanted a cathode biased amp and used a 1958 Stromberg Carlson P.A. Location: Hammertown, ON, CA. It sounded much better than the old tubes. Tung-Sol 6550 is a faithful copy of the original TungSol coke bottle that was produced in the 1960's. Tung-Sol 6550 features triple getters to ensure long lasting operation under high load. Brand New Matched Quad (4) Genalex Gold Lion Reissue KT88 / 6550 Vacuum Tubes. . The GE 6550A, SED (=©=) 6550C, and the NOS MOV/GEC 'real deal' KT88 are similarly rated (42W plate dissipation vs 35W for the NOS Tung-Sol 6550, the NOS RCA/Sylvania 'straight' 6550, and most of the Chinese 6550 and KT88 variants). 6550 TUNG-SOL. Super dependable, works well in most all applications. Before you buy them, check with . That is why they can handle more voltage before blowing. And very reliable, gone through 2 quads with no failures. $18 99. Pair Tung-Sol Audio Power Output 6550 Valves / Tubes. These are as close to the original Genalex KT88s as you could possibly get. I have NOS Tung Sol 6550 ( 3 hole ) and SED Winged C 6550's . The big advantage of the more modern designed Mcintosh amplifiers is the presence of security circuits which shut down the whole amplifier to save the damn expensive thing. The KT88 audio tube is considered to be one of the best sounding power tubes for hifi tube audio amplifiers. 9,388 Posts. KT77 vs EL34 vs E34L vs 6l6. 6550 and KT88 are quite similar, and the data sheet differences to my opinion result mainly from specifying things different. IMHO, I think this ranking is disingenuous (at best). The Ei KT90 was voted the Best Value - it was liked by all reviewers. To sum this up, the Tung-Sol Reissue is, in every way a "real" Tung-Sol 6550. I have been told by one knowledgable source, that NOS 6550's are definitely better than any KT 88. At that time, I praised everything about the amp save for its excessive sweetness. Price includes precision testing and matching. Posts: 3332. There are quite a few choices for 6550s today. From our review of this tube: "There are only so many ways to describe tube tone and most have become clichés. Mullard EL84. ANOS Genelex GEC Gold Lion KT88 originals, not the reissue. Since then, they have gained . They even have gold plated grids, carbonized screen grids, and tri-alloy plates. KT88's and 6550's are kinda boring, tried them. I've tried them all, real NOS Genalex GoldLion KT88's, GEC KT88s, NOS TungSol Gray and Black Plates, Sleventa Winged "C", and the Valve Arts. These tubes have a four digit number as the designation. TAD 6550A-STR Blackplate, Premium Matched. Among my first equipment reviews for this website was an evaluation of the Bruce Moore Dual 70 tubed power amp. They even have gold plated grids, carbonized screen grids, and tri-alloy plates. When used at the parameters found in existing 6550/KT88/KT90 circuits, the Tung-Sol KT120 is impervious to overload, delivering peak power with extreme reliability and long tube life. ANOS Tung-Sol 6550 originals, not the reissue. Tung-Sol 7189 / EL84 / 6BQ5. The Tungsol KT120 when used at the parameters found in existing 6550 / KT88 / KT90 circuits , the Tung sol KT120 is impervious to overload, delivering peak power with extreme reliability and long life. Genelex Gold Lion reissue U77 / GZ34. Not quite as nice sounding as the premium Chinese, but very close and better than the Gold Lion reissues in my amp. The KT120 is rated to have a plate dissipation of 60W. SED EL34 Svetlana winged -C- / Russia. When it's run in circuits designed for 6550/KT88/KT90 tubes, the Tung-Sol KT120 resists being overdriven and reliably delivers peak power.
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