ktp88. Title: KT88 Author: GEC England Subject: JA-FP-2000-10-01 Created Date: 10/1/2000 7:37:10 PMKT88. ktp88

 
Title: KT88 Author: GEC England Subject: JA-FP-2000-10-01 Created Date: 10/1/2000 7:37:10 PMKT88ktp88 150A per side

Recently, I have been looking at 'Winged C' Svetlana KT88s as well. Mullard 5-20 kt88 pp blocks! Ella push pull el34/kt88 amplifier schematic – diy hifi supply Schematic push pull end kt88 amplifier hi complete Circuit diagram for simple audio amplifierWith circuitry borrowed from our most advanced amplifier designs, the Cronus Magnum's 100WPC effortlessly reproduces even the most demanding musical passages. hp = Heptode Unit. Genalex gold monarch kt88 vacuum tubes ooo getter matched pair tested EM 96/96%, GM 92/95%, mA GAS 3. Kerry King has spent four decades at the vanguard of the scene, blazing trails and busting guts with his edgy in-your-face sound, so naturally his signature amp – the custom Marshall 2203KK, a. KT88 Tubes. The KT88-TK is a beam-power tetrode that shares similar applications as the 6L6 and EL34, and is one of. Bogner Shiva 20th Anniversary KT88 Head Dual Reverb Years of Bogner designs distilled down to its purest form, is the SHIVA. 00 shipping. LOGIN DAFTAR KELUAR. The TU-8200R has a built-in headphone jack that will deliver amazing tube audio to your favorite cans. Been asked to build a power section using KT88 for about 80 watts. 46. The attached file contains the new layout. I bought the KT88D and the tube just exploded! On the same amplifier I use JJ and Psvane without problems. Buy Kohler KTP-88 online today and save. The cool thing about it is that it is easily interchangeable with most 6550 amplifiers and can be interchanged in most EL34 based amplifiers with quick, easy mods. The JJ Electronic KT88 is a sonically faithful reproduction of the original tubes with a robust construction encased in a thick glass envelope. IN STOCK! These KT88’s are the best brand we have ever tested. 12AU7, ECC82 and ECC802S can. Just like the GEC KT88, this one has a rounded and more bass-heavy sound than the 6550. This tester does not have any of the tube, it can be used for basic testing and maintenance. Genalex Gold Lion KT88 Power Vacuum Tube, Platinum Matched Quad, Pack of 4. White. Factory Platinum Matched Pair Genalex Gold Lion KT88 tubes, BRAND NEW in Box ! Brand New. Info. Datasheet for Single (T-KT88-STR-RB-TAD) 3. High-quality production for ensured operation. Vp = the plate-to-cathode voltage. Their KT88-T Classic MKII (6550) is famous. IncrediThe KT88 is one of the few classic audio output valves. TU-8200R ships with a R-core power transformer that supports 4 different voltage environments 100V, 115V, 200V, and 230V. 2013-07-12 7:27 pm. I sort of winged it on this amp and don't have a schematic. Selamat datang di KTP88 Situs Online Terpercaya Minimal deposit & withdraw Hanya 20 Ribu, Menerima deposit via Pulsa dan Deposit Via Aplikas Ovo, Dana, Gopay dan Link Aja. Our KT88 vacuum tubes for sale have an absolute maximum anode dissipation rating of 50W and are designed for use in the output stage of an A. 5K Likes, 49 Comments. Dimensions (WHD) incl. Tak hanya penduduk dewasa, anak-anak pun memiliki NIK yang tertulis dalan Kartu Identitas Anak (KIA). The. 1188 Kilwinning St is a 1,397 square foot house on a 6,011 square foot lot with 3 bedrooms and 1. After having read many unflattering threads on the topic of these tubes, I went ahead and bought two matched sets of JJ KT88's. The KT88-TK is a beam-power tetrode that shares similar applications as the 6L6 and EL34, and is one of the largest tubes in its class. KT Mono Amplifier. The low-end is a bit muffled - but not flabby. Vacuum Tube - 6550, JJ Electronics. Single or Matched *. all later makes are not made by Svetlana Electron Devices (SED) in St. This applies especially to power tubes like EL34, 6550, KT88’s, etc. JJ Electronic - Vacuum tubes, Capacitors, Amplifiers. Power: 45wpc in Ultralinear mode, 25wpc in Triode mode (KT88 tubes) 40wpc in Ultralinear mode, 25wpc in Triode mode (EL34 tubes) Weight: 65 lbs shipped, 57 lbs for amp only. As one of the most prominent audiophile vacuum tube manufacturers, Psvane’s designs have established a benchmark for clean and accurate sound reproduction, along with a build quality that matches their sonic performance. You want THUNDER from your vintage Ampeg SVT?Buy Willsenton R8 KT88/EL34 x4 Tube Amplifier Integrated AMP Power Amplifier Headphone Replaceable Basic Meter (Silver): Amplifiers - Amazon. The tubes are small in size, light in weight, easy to carry and store. Description pulled from :The KT76 offers performance. 99. ft. It might be true that most new KT88 designs are really more similar to 6550. John3655, jonwoody, FalseMetal666 and 1 other person like this. Standard pricing is 795 USD, and 895 USD again for Best of Best. The quality of construction and sound is reminiscent of the original GEC KT88. $229. The D series tubes have tube internal plates coated with Purified Titanium to absorb escaped gas elements during tube operation. KT88 is a beam power tetreode, its anode limited dissipation power is 42W. Selamat datang di KTP88 Situs Online Terpercaya Minimal deposit & withdraw Hanya 20 Ribu, Menerima deposit via Pulsa dan Deposit Via Aplikas Ovo, Dana, Gopay dan Link Aja. I'm sending a PDF screenshot for each tube so you'll know exactly what you're buying. LOGIN DAFTAR. Starting at: $68 . I just completed building Bob Latino's fabulous M-125 (125 watt per monoblock) tube amplifiers. 125 Watt KT88 Tube Amplifier. The JJ KT88 delivers a powerful 42 Watts with plenty of headroom to spare. KOHLER PARTS KIT - Free Shipping on purchases totaling $50. LOGIN DAFTAR KELUAR. $500. on said: Log in to Reply. Usually ships within 24 hours. I designed a KT88 PP amp and used EH KT88s. Delete. Highly recommended for an integrated, less than 400 dollars (500 with upgrades). LOGIN DAFTAR KELUAR. Best KT88 Tubes – KT88 Tube Comparison. The Stereo 25 MkII comes with gloriously rich KT88 tubes and accommodates a wide range of output valves (EL34, 6L6, KT88, KT66, KT77, 6CA7, 6550), allowing music lovers and tube rollers alike myriad customization. make / manufacturer: Genalex. Vacuum Tube - KT88, Electro-Harmonix, Matched Pair. Ideal for Guitar & Power Amplifiers. Tube rolling on a Cayin A-88T mk2. tags: Mesa , Axe FX , Kemper , line6 , digitech. Great mids, smooth, airy highs, incredible bass, wonderful 3D presence, and that natural glory you'd expect in an EL34. Selamat datang di KTP88 Situs Online Terpercaya Minimal deposit & withdraw Hanya 20 Ribu, Menerima deposit via Pulsa dan Deposit Via Aplikas Ovo, Dana, Gopay dan Link Aja. S. • Excellent replacement output valve for the Marshall Major, retains the original sound. Ultra linear is connecting the plate through a 40% tap of the winding in the transformer effectively connecting the plate to the screen. The imaging is vivid, with a lot of body and presence, which makes the music exciting to listen to. Pusat Info. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 Indonesia indonesian. Ro_S. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 Indonesia indonesian. 6 amps. A matched (quad) set of the new Mullard 88s from a reputable Ebay seller (I bought my 120s and 150s from there) are $179, and the 150s are still $269…same as when I bought mine last year. Don't move those tubes out of the oven until they are cool. 2012-11-05 4:42 pm. 95. LINLAI™ started its product line with triode tubes including 300B, 2A3, 211, 845, 805, 101D and they also produce 274B rectifier and 6SN7 preamp tubes. Hi, I recently upgraded my Audio Space Galaxy 88 amplifier's tubes about a month ago with a quad of Gold Lion kt88 from kt88 JJ's. Output power will be about 5W. Vintage Marantz 2440 Integrated Stereo Amplifier Quadradial 4 Adaptor Amp Rare. 76. Power Tube Navigation Video. In the early 1980s, Genalex stopped its production, and thus the original product became expensive and difficult to find. EL84/6BQ5 REISSUED. KTP88 | Situs Judi Online Terpercaya | Casino Online Terbesar. Check all the passive components around the output tube--grid resistor, triode switch, etc. They replaced an octet of KT-120s. Power transformed will be of toroid type giving 250 Wt output. It may happen that they sell a defective valve, but serious sellers solve the problem, but this one simply refused. ) Power Vacuum Tubes. I also like the Shuguang Treasure KT88-Z tubes but they are a bit muddled on the top end compared to the -T tubes. LOGIN DAFTAR. Title: KT88 Author: GEC England Subject: JA-FP-2000-10-01 Created Date: 10/1/2000 7:37:10 PMKT88. Then turn the oven off and let everything cool overnight. New Matched Trio (3) Linlai 6SN7 Hifi Black Plates Gold Pins Shouldered Vacuum Tubes. Not sure if that is necessary or not. 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. Selamat datang di KTP88 Situs Online Terpercaya Minimal deposit & withdraw Hanya 20 Ribu, Menerima deposit via Pulsa dan Deposit Via Aplikas Ovo, Dana, Gopay dan Link Aja. Linear Power Section KT88. VAC Statement 452 iQ Musicbloc mono/stereo power amplifier. I've been the happy owner of a PrimaLuna Prologue One integrated valve amplifier for some years now. We would like to show you a description here but the site won’t allow us. F. 6CA7- ‘they are exceptional tubes’. Hello, I'm interested in building a clone of TVA1 - Michaelson and Austin, using a new layout. KTP88 memiliki permainan judi bola, casino online, poker online, togel online, tembak ikan yang dapat dimainkan dengan menggunakan 1 akun dengan deposit minimal 25 ribu. Apart from being made in Denmark, I can find no other details on them. 5. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 RTP KTP88: Bocoran Slot Gacor RTP Live Hari Ini Terpercaya Main Slot Anti Rungkat? Disini Tempatnya! Ayo Gabung sekarang. pins / tip. Chinese Shuguang KT88-98. #7. LOGIN DAFTAR. 6550C-SVT TAD Premium Matched ( SED 6550C winged -C-)New Factory Matched Pair PSVANE 845 Classic Series Audio Tubes. Here are a the final schematics. It has a less punchy bass but it can create a. Must be tetrode operation. Heater voltage: The heater voltage is 6. 50 Off. A Pair of Push-Pull Class A, Ultra Linear Mono Block Tube Amplifiers that can be used with several different vacuum tubes including KT77 / 6L6GC / KT88 with a 12SL7 driver and 6NO30 tubes. JJ KT88 Power Vacuum Tube. KR Audio KT88 – Matched Quad (4 Tubes) $ 1,190. CV5220, KT88S, KT88SC. Free shipping. There is a lot of talk and a lot of speculation about the tubes. Gold Aero KT88 -. Datasheet: 618Kb/8P. Such a design allows better reliability & longevity plus lower noise level of the tubes, and provide a ‘blacker’. $169. Socket Saver / Lifter, Socket Adapters, Speaker Posts, Terminal Strips, Tube Sockets, Plate Top Cap Connectors, 1/8" Phone Plugs, 4mm Panel Jacks, 4mm Test Leads (27)You need an amp like a wild animal, like a fighter, like a beast. Usually ships within 24 hours. $52995. LOGIN DAFTAR. Ovovegas situs judi online yang. or Best Offer. The company claims this WE300B is 100%, 1:1 identical to the Psvane WE300B visually and electronically. KT-88 Tubes - Matched Pair. Genalex Gold Lion Retail Pricing: KT88 Genalex Gold Lion KT88 $350. Steve. E. $379. Most amps using 6550's can also use the JJ KT88's for a different sound. The resistors are 15 watts and dissipate a little over 3 watts apiece but still get hot. [2] Four KT88s installed and powered. Don't move those tubes out of the oven until they are cool. Katie Parker. This home is currently off market - it last sold on. First produced in 1963, it has been called a "seminal" amplifier, [1] and is praised as being among the most desirable of all the company's amplifiers. 00 or more. $187. Daftar di KTP88 dan dapatkan bocoroan slot gacor setiap harinya. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88Studio 10 KT-88 is driven by the monumental KT-88 power amp valve and an ECC83 in the preamp stage. Different rating or performance. $269. PP - Loads of bass, somewhat scooped out midrange, outstanding dynamics, slightly blurry imaging, tizzy highs. [Italian version] Product name: Genalex Gold Lion KT88 Reissue. US Audio Mart is free for casual users and is almost entirely supported by sponsors, banner advertising, and some paid features. 75 g / 2. SH-KT88-98. Does anyone know the provenance of these valves and perhaps the detailed specification?NO ADDITIONAL COST: You pay $0 for repairs – parts, labor and shipping included. Shop the best selection of top-quality tube amps at unbeatable prices. $ 2,499. g. A Pair of Push-Pull Class A, Ultra Linear Mono Block Tube Amplifiers that can be used with several different vacuum tubes including KT77 / 6L6GC / KT88 with a 12SL7 driver and 6NO30 tubes. 97. (52 votes, average: 3. by tubeswell » Sun Jul 14, 2019 10:00 pm. 4%. SED 6550's into Wharfedale w70's for that colored,rich sounding midrange. But over years, the factory’s lack of quality screening has flooded market with mixed quality. Because they have a lower power rating, 6550’s will cause DAMAGE to the power amp and the tubes. We carry all of the major brands in NOS, vintage and New Production vacuum tubes. Pusat Info. The basic figures given are for single ended use, but the valve is. My best sound comes from using both types in two citation amplifiers with two sets of speakers. C, also. Able to output 50Wpc in ultralinear mode and 30Wpc in triode configuration, Stereo 40 MkIV allows you to change between the two options with a flick of the switch. This is a redesign, styled after the early British MOV KT88 tubes. 73 out of 5) “Smooth clean highs, strong deep bass and all the other audiophile words we so endear. Had doubts about the bass having used them in a previous amp they sounded a bit thin there. 599 or $1800 for a matched quartet (4) - Making each tube valued at €399 / $470. I did a test with this model and now I will send for board production. ★三栄無線 Model KT88SSMA/KT88(UL接続) シングルアンプ(整備・動作品) ★三栄無線 Model KT88SSMA/KT88(UL接続) シングルアンプ(整備・動作品) 秋葉原にあった老舗三栄無線からキット販売された銘出力管KT88のシングルパワーアンプです。 ≪主要パーツ等≫ ・前後12AU7の2段直結構成で出力部から最適. 400A load) w/ CT (shooting for 560vDC under load w/ a full wave bridge rectifier) 5A at 6. Purchase Tung-Sol KT150 vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. アドバンス advance kt88s、フォノイコライザー付きkt88シングルアンプ アドバンスのkt88シングルアンプです。 各部電圧確認済み。交流発振器とオシロスコープで正弦波、矩形波ともにチェックし、フォノイコライザー、ローブーストボリューム、パワーアンプ部とも正常に出力されていることを. Wonderful tone and great appearance made this tube the most attractive choice for powerful bass amps and high-end audio. a. Looking for some comments about the quality of differ KT88 valves sound. Genalex Gold Lion KT88 Power Vacuum Tube, Platinum Matched Quad, Pack of 4. Other 88-Key Full Size Digital Piano Weighted Keyboard with Sustain Pedal 2023 - Black. Add to Cart. And while u're at it change the pre tubes too. As an integrated amplifier the Cayin 88T is an outstanding value. Description. Order "2" Or More For Matched Sets : Price Is Per Tube. KTP88 adalah Situs Judi Online Terpercaya Di Indonesia dengan permainan Taruhan Judi Online yang disediakan seperti Taruhan Bola, Live Casino, Togel online, Poker online, Slot Game, Tembak Ikan dan Sabung Ayam serta nantikan permainan lainnya. 90 *. Matched pair of NOS tubes has been tested and work perfectly, but that’s all. MAIN SEKARANG LINK ALTERNATIF Dapetin RTP Live Terakurat Hari Ini 14-November-2023 Untuk Wilayah Indonesia Mencari rtp live hari ini? Selamat datang di KTP88 Situs Online Terpercaya Minimal deposit & withdraw Hanya 20 Ribu, Menerima deposit via Pulsa dan Deposit Via Aplikas Ovo, Dana, Gopay dan Link Aja. You want THUNDER from your vintage Ampeg SVT? Phil Koetsu BLue Lace Platinum, Linn Sondek LP12 Akurate with Lingo 4 power supply, Akito 3b tonearm, VAC Signature SE preamp with built in phono stage, ARC 160S, Jadis PA100, Magnepan 3. Our KT88 vacuum tubes for sale have an absolute maximum anode dissipation rating of 50W and are designed for use in the output stage of an A. Shuguang KT88-98. The Tung-Sol EL84/6BQ5 was a popular OEM tube for American-made EL84/6BQ5 guitar amplifiers, such as those built by Gibson and Harmony. It is intended for audio frequency power amplifiers. 00. The amp is auto biased. Coming in at €1. USD $‎39. Made in Russia, they look identical to the originals down to the plate structure. Product Description. by the MOV ( Marconi-Osram Valve) subsidiary of G. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 Indonesia indonesian. We pay the factory to pre-test for us, and give us the top 50% of production. LTspiceで 真空管. Add to cart. kt66 has different tone and about the same output as 6l6 about 50watts a pair. For personal enjoyment or commercial recording, they grant. Free Shipping. Regularly matched pair goes for 649. 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. $299. The voltage gain (input) stage is a common Shunt-Regulated Push-Pull (SRPP) amplifier using a 5751 miniature dual triode valve. FREE delivery Sep 22 - 27. The PCB also includes a tube-based power supply, using 5U4 or whatever tube you like, and snap-mount capacitors on the PCB. Additional info. 95. Only 1 left in stock - order soon. China Psvane HiFi KT88. Here are some numbers-. Sedia bonus deposit hingga 1 juta rupiah dan RTP paling GACOR setiap harinya !! #link Alternatif ktp88 #ktp88 #Link Slot Online #Slot Deposit DanaNew Plate Current Matched Quad of Genalex Gold Lion KT88 (6550) Vacuum Tubes. This is the project page for modifying the popular Wilsenton R8 KT88 amp to greatly improve it's reliability and performance. 2006-09-15 3:11 am. F. The reissue Tung Sols have really good "shove" but are just slightly grainy. The voltage gain (input) stage is a common Shunt-Regulated Push-Pull (SRPP) amplifier using a 5751 miniature dual triode valve. The Cayin CS-55A KT88 comes with four KT88 power tubes, two 12AU7 preamp tubes, and two 12AX7 tubes. Very powerful, with strong bass and very bright highs. hx = Hexode Unit. Named a Hi-Fi News Outstanding Product, Stereo 40 MkIV is a glorious-sounding piece unique in build quality, visual presentation, versatility, and feature set. The Pro88 MKII is our mid-range integrated amp and for this price range you get velvet smooth sound with some punch. It's brand new unused, bought for a project but never used it. Use of these parameters shall be entirely at the user's own risk. The product is applicable for checking such diseases as epilepsy, intracranial inflammation. LOGIN DAFTAR. 1). 395vAC (under . Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 Indonesia indonesian. 000 products in stock. Nov 7, 2021. Here's the story: JSC Svetlana is a Russian company that owns and operates the Svetlana factory in St. The REDBASE features a gold control grid for outstanding low-noise performance and reliable stability. All power tubes are Platinum Screened & Tested to the highest standards, including a 72-hour burn in process, and testing at real-world voltages. $829. Description. Dennis Had Inspire IFA-1 Single Ended KT88 amplifier. 電子機器というより、高い音楽性を持つ音響機器、例えばオーディオアンプやギターアンプとしての存在感を、より強くして. Psvane. Gold Aero 6550 - matched quad. The JJ KT88 delivers a powerful 42 Watts with plenty of headroom to spare. +$20. The TELEFUNKEN Elektroakustik KT88-TK is a newly manufactured and cryogenically treated version of the legendary KT88. Each amp takes 6 of these so mucho dinero laid out. So thats what I will try plus they are cost effective. What's worse is that the seller Tokban Audio refused to resolve the issue. KT88 is similar with CV5220 and 6550,they can be replaced by each other. f. 1. I guess he's actually gotten some complaints specifically about those Gold Lion not working. "The real dog may piss on the rug, needs visits to the vet, gets fleas, has to be walked, but it's a living thing. 19. 650. I built 2 prototypes of push-pull KT88 amplifiers, with 3. #20. 69. Add to Wish List. It can appear wherever the electrons from the cathode can strike a solid object. But, Elys is really the stock cartridge that probably should have been included with the all the lower level Rega decks. Link to my online store: The EL34 is a thermionic vacuum tube of the power pentode type. Linlai™ Global Black bottle KT88-T is an excellent first step upgrade from the generic clear bottle KT88 tubes, with outstanding price to performance ratio. LOGIN DAFTAR. Looking at the data sheet for the Penta/Shuguang/Ruby KT88V-STR, the max anode dissipation is 50 watts! Compared to the regular 42 watts or even 35 watts on some more common KT88 data sheets that seems pretty high and really makes a big difference (about 10 mA) for the bias calculations. 5db) Total harmonic distortion: 1% (1kHz) Signal to noise ratio: 91dB. They are nice sounding tubes, they appear to have better than typical quality control for tubes of modern day manufacture. condition: excellent. Cost: €55 each ( Currency conversion) ( YMMV) Reviewed: April, 2015. This is a fully weighted keyboard, so is very heavy ~70lb and does not come with case. Ro_S. It's nearly impossible to find truly NOS NIB GEC KT88s these days. PP2012 - KT88 Hi-End Push Pull Amplifier. KT88. Tight Rope Line (CW) by. $25. United States. Affordable Tube Integrated Amplifier. KTP88 adalah Situs Judi Online Terpercaya Di Indonesia dengan permainan Taruhan Judi Online yang disediakan seperti Taruhan Bola, Live Casino, Togel online, Poker online, Slot Game, Tembak Ikan dan Sabung Ayam serta nantikan permainan lainnya. Excellent tone and great appearance. The frequency response ranges from 5Hz to 44kHz, which is more than necessary to get the most out of high resolution digital tracks. First look at the 6550 & KT88 Power Tubes and a discussion on the differences with the EL34 Power Tube. Warning: Substitutes are given as a guide only - please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. The KT88 is also suitable for use as a series tube in a stabilized power supply. Input Sensitivity: 500mV-. This workstation was released in 1994 and features 64-voices polyphony, which gives you plenty of. I emailed Rogue Audio and they suggested/recommended the JJ KT88's above some other options. The KT88 and 6550 are electrically equivalent; they. Class-A Ultra-Linear 12SL7 SRPP / KT88 SIPP Tube Amplifier. LOGIN DAFTAR. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 KTP88 merupakan Bandar Slot Online Terpercaya dengan game terlengkap deposit hanya 20ribu dan menerima deposit via ovo, gojek, dana, link aja. #1. You can theoretically even run these triode strapped at 600v. The draft of the schematics is attached. Pmax = the maximum plate dissipation. Buy from the experts and avoid hassle!Product information "SED KT88 Svetlana winged -C- / Russia". Or fastest delivery Tomorrow, Sep 21. A tube rollers dream! Amplifier, (7) - tubes, owners manual, new unused factory power cord, spare fuses. It was manufactured in the U. These are manufactured in the Chinese Shuguang factory and are among the finest current production KT88's available with excellent reliability, focused soundstage, wide linear frequency response, and tight focused low en. vandernog. $500. Close or identical. 7025 S Premium Selected -Mullard style- TAD-Tubes. Both are excellent durable tubes. The 1987 Gold Aero 6550A tubes in this precisely matched quad have coke bottle shaped glass, black plates with extra support rods, and metal collar bases. Finish. New & NOS power tubes from Mullard, Tung-Sol, Telefunken, Sino, GE, Telefunken & more! Our KT88 tube sets are precision matched on our custom equipment and hand-selected by our staff for the best results. About This Listing. - good damping factor near to transistor amp. 9K 33% ultra linear / 12% cathode feedback transformer (3. The 470 ohm cathode resistor sets bias at a 75mA which is only about 68% of the maximum plate dissipation so expect long tube life with this amp.