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. 73 out of 5) “Smooth clean highs, strong deep bass and all the other audiophile words we so endear. KT88 is a beam output pentode with an octal base and power of 42W. Put them in a dish (not covered) in a cold oven and turn on - bring up slowly to 150 degrees celcius and keep there for 4 hours. 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. High-quality production for ensured operation. 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. JJ KT88 Power Vacuum Tube. KT88 CHARACTERISTICS Tetrode Connected 250 250 3 (approx) 15 (approx) pg1—g2 Triode Connected 250 15 (approx) 670 TYPICAL OPERATION Push-Pull. 98. Steve. I've had the 275s and have been running MC60s for the last few years. Excellent tone and great appearance. Coming in at €1. As long as it's got the juice to power your speakers without running out of gas, it's just a beautiful amplifier. Power transformed will be of toroid type giving 250 Wt output. E. The KT88 is one of the few classic audio output valves. 30-Day Return Policy. It is intended for audio frequency power amplifiers. The tubes are small in size, light in weight, easy to carry and store. Starting at: $68 . ) Power Vacuum Tubes. deposit dan withdraw online. PP - Loads of bass, somewhat scooped out midrange, outstanding dynamics, slightly blurry imaging, tizzy highs. The resistors are 15 watts and dissipate a little over 3 watts apiece but still get hot. This is a very deep blue color. It's the ultimate instrument for performance -- whether you play at home, in the studio, at church, or on stage. 1. Hi folks, I have some faulty power tubes in my Laney Nexus tube head. Two tubes can be brand new in the original box, with one testing at [as an example] 6500 micro. Other 88-Key Full Size Digital Piano Weighted Keyboard with Sustain Pedal 2023 - Black. sears november26, 2000 The JJ KT88 delivers a powerful 42 Watts with plenty of headroom to spare. This tube has a tone that is warm and lively with a detailed and balance response. In general, the KT88 tube has a magical mid-range similar to the smaller , but with low and high end extremes that reach much further. MusicTeck. The quality of construction and sound is reminiscent of the original GEC KT88. 12AU7, ECC82 and ECC802S can also be used but. Jadis Defy 7, Quicksilver KT88, VAC PA90 tubed power amplifiers. Description. LOGIN DAFTAR KELUAR. k. 00. ft. These are phenomenal! I had them in a Marshall/Park75 build for a couple months. The Svetlana KT88 is an excellent choice for users looking to upgrade their current KT88 tubes. $368. But for competitive reasons, it's included as an upgrade Performance Pack for the starter decks and an option for the Planar 3. $119. KTP88 merupakan Bandar Slot Online Terpercaya dengan game terlengkap deposit hanya 20ribu dan menerima deposit via ovo, gojek, dana, link aja. The KT88 audio tube is considered to be one of the best sounding power tubes for hifi tube audio amplifiers. We pay the factory to pre-test for us, and give us the top 50% of production. KT88 is also upwards compatible with 6550 tubes. · 64-Voices -- Play bigger chords or longer sustained passages. Manufactured with plastic coil forms for coil support and insulation. They claim to have "engage [ sic] in power amplifier research and production more than 10 years. TikTok video from ktp88 (@katiejanepavier). Recently, I have been looking at 'Winged C' Svetlana KT88s as well. Standard pricing is 795 USD, and 895 USD again for Best of Best. Brand New. This tube is a favorite of audiophiles. Genalex Gold Lion KT88 Power Vacuum Tube (Editor’s Choice) In 1957, this super-premium power octal beam tetrode was introduced by Marconi-Osram Valve Co. Our new TAD KT88-STR REDBASE is built in the style of the early British MOV KT88 with the big and heavy glass envelope and beautifully polished metal base. Otherwise I would have stuck with KT120s. Selling my KT88 by Mcintosh. Due to many requests by fans of our Tung-Sol line of tubes, the Tung-Sol EL84/6BQ5 has been reissued. Among the largest in its class, this. $829. About This Listing. The board is double-sided and electrolytic capacitors will be fixed from the bottom side of the plate. 12AU7, ECC82 and ECC802S can. 5 baths property. 36AM3. Items 1 to 40 of 73 total. #7. We would like to show you a description here but the site won’t allow us. Delete. TAD just announced that they now have stock of the newest addition to the REDBASE-tubeline - the KT88-STR REDBASE. Octal base. BEAM PENTODE. **SERIOUS INQUIRIES ONLY — NO TRADES**For sale: (1) Willsenton R8 KT88/EL34 x4 Tube Integrated AMP Power Amplifier w/stock tubes (1) Oroginal Factory Box (1) Remote ControlJust about everything you need to know about. COVERAGE: Plan starts on the date of purchase. The Psvane KT88 is a high quality, high power, beam tetrode with an octal base. #2. Yet, the KT88s have a higher voltage rating, as well as a more increased plate power. 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. They seem to be able to take high voltages well and sound great. $150, few years ago I would have gotten a set for ca. $150, few years ago I would have gotten a set for ca. KT88 is similar with CV5220 and 6550,they can be replaced by each other. 05 x 4. The happy case for a tube-amp (i. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 Indonesia indonesian. A quick note on this tube: These tubes seem to take a bit. $649. Since I haven't been at home to swap them out yet, I was wondering what the AK comunity thought of both types. 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. $32. The KT90 is one of several latter day hybrid tubes not really part of the GEC Kinkless Tetrode family, e. Link to my online store: The EL34 is a thermionic vacuum tube of the power pentode type. PP2012 - 25 -35 W Extreme Hi - End Push Pull Amplifier. The Redbase® features a gold control grid for outstanding performance and reliable stability. 1188 Kilwinning St is a 1,397 square foot house on a 6,011 square foot lot with 3 bedrooms and 1. 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. In addition, it tests for shorts and “gassy” valves with the ability to measure the Gm or transconductance of a valve. KT88 Substitutes. #6. V. The KT88 is slightly more expensive, but as of this writing KT88's are easier to find than 6550's. New Amp Day! Got this used, imported from a shop in Japan for just under $1000 with shipping. Class-A Ultra-Linear 12SL7 SRPP / KT88 SIPP Tube Amplifier. See: 1PC Push-pull amplifier PCB For EL34/KT88 | eBay. Reviewer: Frank Burgers - TNT Netherlands. Genalex Gold Lion 6V6GT Power Tubes - Matched Quartet (3-pack) Bundle. Based on the works of Abdellah, Gendrano, & Kegger. 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. Designed for push-pull tube output circuits. As you could notice by comparing these two amplifiers, there were. LOGIN DAFTAR. VAC's Statement 452 iQ Musicbloc amplifier ($75,000 for a single amp; $150,000/pair mono, as reviewed) is tall, young, and lovely, but unlike the girl from Ipanema, it isn't tan. This is the PDF parts BOM. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 Indonesia indonesian. As Brett mentioned and per your conditions, in tetrode mode, distortion is high. It sounded much better than the old tubes. 44. User Experiences This patented Sophia Electric coke-bottle KT88-ST (long life version) tube has the most refined sounding with best high frequency extension, a cure for the dark sounding KT88 amplifiers. Both are excellent durable tubes. K. Total Harmonic Distortion: ≤ 1% (1kHz) Input Impedance: 100Kohm. F. LOGIN DAFTAR. To run your pentode/Beam in Triode you connect the plate to the screen with a 100 ohm resistor. This applies especially to power tubes like EL34, 6550, KT88’s, etc. The frequency response ranges from 5Hz to 44kHz, which is more than necessary to get the most out of high resolution digital tracks. I have looked at the angle site and hammond. Genalex Gold Lion KT88 Power Vacuum Tube, Platinum Matched Quad, Pack of 4. 00 or more. Their KT88-T Classic MKII. Psvane HIFI Series UK-KT88 、UK-EL34、UK-6SN7 are new-creation, never have the better cost-effective in the history of Psvane. p = Pentode Unit. Affordable Tube Integrated Amplifier. KT88. The power supply is based around a 5U4GB dual tube rectifier and is shown in Figure 2 below. 425V plate voltage and 40mA (as per schematics) requires about -36V bias. This is a vacuum tube for the microtube, which can be used in conjunction with other electronic products. I have restored and rebuilt a leak stereo 20, leak tl12 plus, quad ii etc but never done point to point amplifier build or from scratch. LOGIN DAFTAR. . Tube Matching Information: Perfect Pair System. And while u're at it change the pre tubes too. This tube has a tone that is warm and lively with a detailed and balance response. Quote from: LooseChange on June 25, 2011, 07:40:26 am. My experience between the two is crisper highs with the kt88's and fuller midrange with the 6550's. $187. Factory Platinum Matched Pair Genalex Gold Lion KT88 tubes, BRAND NEW in Box ! Brand New. The 470 ohm cathode resistor sets bias at a 75mA which is only about 68% of the maximum plate. 95 *. A select KR Audio KT88 is the EAT KT88 Diamond (European Audio Team), roughly twice the price of your normal KR Audio KT88. SUBSCRIPTS FOR MULTI-UNIT TUBES: b = Beam Power Unit. It may happen that they sell a defective valve, but serious sellers solve the problem, but this one simply refused. 6550, CK6550, KT90. It has the same large heavy glass envelope and a polished metal base. Therefore there is no 350-0-350 or 400-0-400 transform the will produce that current or is the ma 65 per push pull pair. Other input tubes can be used in the driver stage, the closest match being a 12AX7 which will provide more gain. The tube has a high power and low loss, and the sound quality is very good with this tube. Made in Russia, they look identical to the originals down to the plate structure. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 Play KTP88 and discover followers on SoundCloud | Stream tracks, albums, playlists on desktop and mobile. 99. Figure 1: OddBlock KT88 Series 1 Tube Amplifier Schematic. Anode current = . #20. The unique tri-alloy plate structure of the Sovtek KT88 yields higher minimum plate current and higher transconductance while improving. For those looking for more exotic tube design, we recommend to check out the newest ‘Titanium coated plate’ KT88-D from Linlai Global. kt88/6550 is a different animal, look for a little over 80 watts a pair. Put them in a dish (not covered) in a cold oven and turn on - bring up slowly to 150 degrees celcius and keep there for 4 hours. High Performance Audio Beam Power Tetrode. I didn't know SED made tubes anymore. 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. LOGIN DAFTAR KELUAR. The Black Diamond Series KT88-TK is a newly manufactured version of the legendary KT88. Output power will be about 5W. I sort of winged it on this amp and don't have a schematic. $239. "It's the difference between a stuffed dog and the real thing," said Gunter (George) Bischoff, of Melos Audio, on the difference between solid-state gear and tubes. I have a pair of matched NOS Made in England Genalex Gold Monarch KT88 Power Tubes. Involving, detailed, in-depth, and fatigue-free musical playback is its strong suit. Add to Cart. Very powerful, with strong bass and very bright highs. We’ll start this article by reviewing the best guitar amps at each price point, but if you want to learn more about amps before reading reviews, check out our guitar amp information guide at the bottom of the page here. 150A per side. LINLAI™ will start commissioning to produce popular power tubes such as EL34/6CA7 and KT88/6550 at late 2020. Pusat Info. kt77 has different tone and about the same output as el34 about 50watts a pair. 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. This unique HPCC coating is known as High Polymer Carbon Compound. $239. The JJ Electronic KT88 is a sonically faithful reproduction of the original tubes with a robust construction encased in a thick glass envelope. LOGIN DAFTAR. 6A. Genalex gold monarch kt88 vacuum tubes ooo getter matched pair tested EM 96/96%, GM 92/95%, mA GAS 3. Description pulled from :The KT76 offers performance. likewise with KT88's just more so. US Audio Mart is free for casual users and is almost entirely supported by sponsors, banner advertising, and some paid features. Memory - 100 RAM + 80 ROM Sound Memory. 00. Was: $45. In reading the data sheets seem like I can use a BF twin OT. Up for sale will be one matched pair ( 2pcs) of ShuGuang Treasure vacuum tubes KT88-Z (Substitution of 6550), packed in environmental protection box as picture shown, product of SHUGUANG Electron Group. 2013-07-12 7:27 pm. The new power amplifier 0. I have settled on the Shuguang KT88-T tubes in my KT88 tube amp (Don Sachs ~74 watts). d = Diode Unit. "Yaqin (pronounced "Ja-chin") [1] is one of the more prolific Chinese manufacturers of valve (tube) based audio equipment. Upgraded my Audio Space Galaxy 88 amplifier's tubes about a month ago with a quad of Gold Lion kt88 from kt88 JJ's. Pusat Info. Pusat Info. Description. Was: $140. A decade or so later, bass guitar tube amp icon. It has a strong detailed bass and smooth highs, with the mids slightly warm yet still detailed. The Psvane Classic Series is focused on the reproduction of popular vacuum tubes found in classic audio equipment. This vacuum tube is an eight-pin octal beam tetrode designed to act as an upgrade to the KT66. I would like to make it operation type selectable by using a switch, so I can operate the tubes at Triode, Ultralineal or Pentode, depending on my PWR needs, and mostly for audio comparisons purposes. Power Supply - DIY Single-Ended KT88 / 6L6 / EL34 / 6CA7 Tube Amp. The amplifier stage is based on the Compact Hi-Fi Power Amplifier by Melvin. Tight Rope Line (CW) by. Secondary - 4/8/16 ohms preferably all usable via 1P3T switch w/ no rewiring. Daftar Segera dan Raih jutaan Rupiah Setiap Hari Di KTP88 Indonesia indonesian. Analogue: SP10, PMAT MK8SE, Kontrapunkt b, Avalon OBX Digital: Modified Aqvox DAC, Modified Mutec, Kenwood X9010 CDT Amp and speakers: Modified Neurochrome 686 & EKTA MKIIYes, these are the ones I meant by "genuine" Svetlanas, the Petersburg-made "C"-winged/winged-"C" tubes. Shop our great selection of KT88, 6550, KT90, KT120, KT150, vacuum tubes now. Use of these parameters shall be entirely at the user's own risk. The caps are not touching the resistors. Usually ships within 24 hours. All power tubes are Platinum Screened & Tested to the highest standards, including a 72-hour burn in process, and testing at real-world voltages. Play KTP88 and discover followers on SoundCloud | Stream tracks, albums, playlists on desktop and mobile. Upscale Audio's Kevin Deal reviews the Gold Lion KT88. Not sure if that is necessary or not. Every power tube is different. If I had a choice for hifi, I would use the KT88's as they sound neutral. Great mids, smooth, airy highs, incredible bass, wonderful 3D presence, and that natural glory you'd expect in an EL34. 99. C, also labelled as IEC/Mullard, and, in the U. The PCB also includes a tube-based power supply, using 5U4 or whatever tube you like, and snap-mount capacitors on the PCB. 75 g / 2. These are as close to the original Genalex KT88s as you could possibly get. #1. Joined 2009. Ultra linear is connecting the plate through a 40% tap of the winding in the transformer effectively connecting the plate to the screen. Blue glass envelope. Fits a standard eight-pin octal socket and has similar pin-out and applications as the 6L6 and EL34. 3vAC heaters, or 3. I am using a tube preamp as well. Owners of amps from Dynaco, Eico, Mullard, and. Specifically in the manual, it states "6550 tubes will NOT work in this unit. The founder of Cary Audio, Dennis has been at the tube business for a long time. It has a less punchy bass but it can create a more lush sound. Results for kt88 tubes. From €73. Almost everything you see on eBay sold as new, is not. The KT88 was introduced by GEC in 1956 as a larger variant of the KT66. If you aren’t familiar, these are some of the best. Click the image to enlarge. Starting at $56. For my SE amplifier build I have included a switch that allows me to select between triode-strapped or ultra-linear operation (the original. Close or identical. China Psvane HiFi UK-KT88. With an anode to anode load of 4,000 Ohms and 550 Volts on the anode a pair run in ultra linear AB1 will deliver 100 Watts at 3. Power Tube Navigation Video. The KT88-Z tube's construction features gold grid wires and a new internally coated black glass bottle. Depending on the brand, distortion varies widely. It is a no compromise custom amp built for the kill. The TELEFUNKEN Elektroakustik KT88-TK is a newly manufactured and cryogenically treated version of the legendary KT88. (This equation will also be affected by the screen voltage (Vg2) and bias point*, so you want to have. I used Edcor power and output trannies along with Hammond power supply chokes. Description. 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. Check all the passive components around the output tube--grid resistor, triode switch, etc. LOGIN DAFTAR. The figures given are for single ended use, but the valve is almost invariably used in push pull pairs. HiFi-Amplifier Audiophile online store Cayin MT-45MK3 Vacuum Tube Amplifier KT88*4 Class AB1 Dual Power Amplifier Bluetooth [Cayin MT-45MK3] - Product parameters: Project KT88 Vacuum Tube EL34 Vacuum Tube Power amplifier part Rated output power TR: 20W+20W (RMS triode working state) UL: 40W+40W (RMS super linear working state). LOGIN DAFTAR. do NOT contact me with unsolicited services or offers. Dear Friends, Inspired by the discussions around the possible schematics to use my father came up with the idea to combine the driver stage from the VTA ST70 AMP using 6SN7 tubes with the output of Mark III based on KT88 for more power. 99. This is a matched pair. Regularly matched pair goes for 649. These are as close to the original Genalex KT88s as you could possibly get. $170. can be used in combination with PSU board. E. 50 Off. 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. KT88-STR REDBASE TAD Premium Matched. Benefitting from the extra headroom of the KT-88, the Studio 10 KT-88 is the pinnacle of dynamic modern cleans and tight high-gain overdrives. KT88 Tubes. I've been the happy owner of a PrimaLuna Prologue One integrated valve amplifier for some years now. +$20. Manufacturer: List of Unclassifed Manufacturers. Purchased from Doug's Tubes who described them as among the finest production KT88's available with excellent reliability, focused soundstage, wide linear frequency response, and tight focused low end. The basic figures given are for single ended use, but the valve is. Ktp88 merupakan Situs Judi Online Paling Aman dan Terpercaya. 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. Each amp takes 6 of these so mucho dinero laid out. They replaced an octet of KT-120s. all later makes are not made by Svetlana Electron Devices (SED) in St. Change to G/L straight, don't look back. 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. Purchase Tung-Sol KT150 vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. The Melody Pro88 MKII integrated tube amplifier is one of the newest additions to Melody’s product range. Description. Watch on. My amp came with EL34's, but I swapped them for KT77 JJ's (good and inexpensive) then eventually Gold Lion Kt77's (great and somewhat more expensive). 3 volts. 麦景图（老麦）为庆祝50周年而推出的「复刻升级版」mc275（第六代，第一代诞生于1961年），已经强调在使用家先关掉前级，甚至因为一刻失魂而在未关机下直接拔掉其胆后级电源也不会有烧机之危。20 IQ. Hal itu sebagaimana mengacu pada Undang-Undang Nomor 24 Tahun 2013 tentang. It has a high range and uses 100 watts. View sales history, tax history, home value estimates,. The Reference Pentode and Beam Tetrode Thread EL34, KT66, KT77, KT88, EL11, EL12, EL3N, EL35, EL37, 6550, 6L6, EL51, EL39, 4654, 4699, KT63, KT61, 6V6, etcPosted November 14, 2008. 35mm steel with OFC wires. Order "2" Or More For Matched Sets : Price Is Per Tube. The JJ Electronic 6550 is a robust tube built in the rugged fashion that JJ is famous for. Linear Power Section KT88. Free Shipping. Vp = the plate-to-cathode voltage. This is a redesign, styled after the early British MOV KT88 tubes. From €29. 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. Immediately found a significant improvement listening to jazz where seems instrument's details when running LP's, for example piano and other. 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. 2010s. 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. Tubes were new production (mostly Russian). KOHLER PARTS KIT - Free Shipping on purchases totaling $50. At 35 Watts, these tubes have a warm round tone with a thick and defined low end. The Telefunken KT88 is an incredibly durable tube that can handle taxing applications whether it is guitar or hifi. Running the KT88 at the same operating point requires about -55V bias. Been asked to build a power section using KT88 for about 80 watts. just-in-time OEM service. New Matched Sextet (6) Psvane KT88-T Classic MKII II Series Vacuum Tubes. 51 Results. Looking for KT88 Guitar Amp Tubes? Sweetwater has FREE Shipping and FREE Sweetwater Support for. Used – Very Good. Audion Sterling KT88 Anniversary stereo is hard wired point to point using better graded components and larger, hand-built Audion wound output transformers (EI96). Mesa/Boogie KT-88 Power Tubes - Matched Duet. From €73. 35mm Japanese Z11 steel with OFC wires. High Power & Low Distortion. 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. $25. KTP88 | Situs Judi Online Terpercaya | Casino Online Terbesar. Is often bought together Customers also bought Customers also viewed. Still relatively new convert to audiophilia, so apology in advance if this is a "stupid question" to some. Brands include Genelex/Gold Lion, Winged C, Sovtek and Valve Art. Dennis Had is a legendary name in tube audio. This tube is suitable for all kinds of amplifiers. $200 but thought it to be too pricey. My experience between the two is crisper highs with the kt88's and fuller midrange with the 6550's. This video will help you pick easy to. F. 40 *. Electro-Harmonix KT88 Vacuum Tube High power kinkless-tetrode for use in amplifiers such as the Marshall Major. I have Tung Sol 6550s (came with my amp…Jolida JD502P with factory upgrades), and Sovtek KT88s, and they sound great…but compared to the 120s. $1500. Additional Information and Downloads. In most cases, you can use these tubes in place of KT88, but it's best to check with your amp manufacturer first. I bought a set of four perhaps 2005 or 2006 for ca.