Kt88 set diy At once components are soldered Aikido KT88 SET, etc. Boy that stuff has terrible fumes but has a really nice finish! Probably should have been wearing a respirator. posted by Thomas Martens on January 25, 2007 at 11:36:56: "Also: IMHO, the aikido KT88 design strikes me as not very elegant engineering, and almost garanteed to have low freq extension and IMD problems, if not also excessive high-order distortion products Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others Tube swapping is very easy in this amplifier. The amperage of the For power tubes my design is optimized for KT88 tubes, but will also work well with EL34 tubes. Can someone recommend where to find schematics and parts list? Apr 17, 2022 · M'y realization of this stéréo integrated Amplifier, inspired by the design and ideas of ABDELLAH/GENDRANO/KEGGER. Fostex FE206En or FE208EZ - back loaded horn - thread Dallas Back (Rear) Loaded Horn Speakers with Fostex FE206E Fostex F200A - bass reflex / transmission line TubeDepot carries a selection of 6550 / KT88 / KT90 Power Vacuum Tubes. Jan 15, 2024 · My first amp from several years ago. It was a shocking moment for me as the amount of breadth, space, oomph, and realism was overwhelming. Anyways, I'm kicking around the options of speakers to use with this amp - Options: A12Pensil, A10 pensil etc. It has the same big and heavy glass envelope and beautifully polished metal base. Our premium selection of high-quality, affordable amplifiers will enhance your listening experience. I've built the S-5 K-12G in the past, and been wanting to build a simple single-ended amp for a while, and then I saw blueglow electronics was doing this exact build. 5 giving enough headroom for about 3dB of cathode feedback . Ran out of copper bar stock, so this one took the lead and finished it up. A 6N1P dual triode is used to drive the output stage. Feb 27, 2004 · Hi guys, I've heard so much ABOUT tubes that I want to try them. ?? Any tips? Dec 29, 2020 · While I find endless comparisons between EL34, KT88, 6CA7, KT120, etc, both between designs and between manufacturers, I haven't found good discussions of the various Big Boy tubes like the 2A3, 300B, or 805. That's a good start. 12SL7 SRPP / KT88 Push-Pull DIY Tube Amplifier Photograph 3: 12SL7 SRPP / KT88 Push-Pull Tube Amplifier - Inside View For additional tube amplifier design and construction tips, see my design and construction tips and suggestions for vacuum tube amplifiers. Based on the works of Abdellah, Gendrano, & Kegger. Mar 6, 2023 · I'm still learning quite a bit by tweaking and modifying this KT88 amp and seeing how the load lines change. This one is quite the joy. 0. I enjoy my 5 watt se builds but have a party coming up this spring and need more power so am ready to get started but have a few questions. May 4, 2023 · Hey, So as an exercise to learn amp math in design I want come up with a single ended amp with 2 tubes, maybe 3 max (with rectifier tube) and was looking for ideas. This kit is unavailable, production has been finished. posted by Thomas Martens on January 26, 2007 at 09:08:03: Hi, Jan 25, 2007 · I've been considering building this Single-Ended KT88 amplifier. No UL tap but switching to fixed bias helps squeeze enough power out to recover a bit of the difference Nov 5, 2025 · Single Ended Power amplifier kit with automatic bias system which allows to use various types of octal base pentodes and beam tubes without need to manual bias change. This model is dedicated to be used with preamplifier, although front-panel located input is equipped May 31, 2023 · Hey there, has anyone got any ideas on how to increase output power for the Blueglow design? sorry if this has been asked before, my speakers are 87db and ideally another 5/7 watts would be great. Many thanks to you gentlemen. I had a push-pull amp that was designed around the KT88. Here are some ideas. Doing some QA on this one. The hardest cabinet work is behind me now but if I were to do it again I may have tried a simpler Stonehenge build (or similar) with coaxials. I personally prefer KT170 than KT88. The schematics state a number of other valves are drop in replacements, including the EL34. 00 The voltage amplification section, power amplification section, and filament DC rectifier section (300B specifications only) are sub-chassis (units only). Power output is about 25 Watts with pure class-A operation. Parts Express 6CA7 I Nov 2, 2025 · Tubes set for TU-8400 amplifier kit. 5W KT88 SET in Ultra Linear Topology, I am using it for my office setup and it sounds fabolous! I am still improving it whenever I have extra time for beers. It's your design, and your ears or whatever you had planned to use for determining performance. jpg 1. January 2005 The T-Rex SET Amplifier: A DIY Project Article By Dick Olsher And John Broskie Click here to e-mail reviewer A lthough long dead, the Tyrannosaurus Rex still roams our imagination and popular culture, savagely preying on lesser beasts and slow men on the big screen, or painted purple and dancing with children on the small screen. DIYER being able to make each unit Feb 1, 2008 · I like the sound of the EL34's in this amp, so I've been tube rolling somewhat. I am anxious to see how the A7-8s do with my KT88 SET amp. Mikael is known to us as a name, and even in depictions of religious symbolism, Mikael is often shown to be a Male warrior. Support various pentode and beam tubes Select from three power modes with the switch on Jan 26, 2007 · I disagree, KT88 better value - Thomas Martens - Tube DIY AsylumI disagree, KT88 better value Posted by Thomas Martens on January 26, 2007 at 08:38:36 In Reply to: Maybe a 300B SE? posted by kstagger on January 26, 2007 at 07:07:53: and frankly, can make a much cleaner 8-9 watts. Rock on, mike Discover the best China audio amplifiers at HIFI EXQUIS. There are a number of good schematics out there for 6550/KT88 SET amps, so this project is about putting the pieces together, trying a couple of them out or making up our own, testing which we like and go from there. We'll see. 4% - good damping factor near to transistor amp. This set was designed for use in UL connection and they perform best in UL. The pentode is connected in triode mode will be driving the KT88, there will plenty of current and voltage swing to drive the power Jun 22, 2007 · DIY Single-Ended (SE) KT88 Tube Amplifier The photos below are of Bernardo's DIY Single-Ended KT88 Tube Amplifier following Mikael Abdellah's schematic. FWIW, I like the EL34 as a single ended output stage. gulp. I Feb 27, 2004 · Hi guys, I've heard so much ABOUT tubes that I want to try them. However, the reality is Mikael is a title that is earned through an act of selflessness “One who is Like God”. After some extensive listening tests, ended up with a set of KT88-Z black coated tubes, a gold lion 12AX7 and the gold pin version of the EH 12AU7 with the supplied Sovtek rectifier. We got to discussing about eschewing expensive DHT's and building a straight forward and reasonably priced SET amp using tubes from the beam pentode family (KT88, 6550, EL34, KT66, et al). The best choice these days is the KT120, which is the most robust current version and increases the output and thus headroom / bandwidth within distortion spec, and it also Jan 17, 2005 · I was thinking that everthing points to a choke loaded parafeed KT88 SET. etc. Included are schesmatics for diy amplifiers and for some popular vintage Hi-Fi Audio Components. KT88 SETby Jasmin | Jun 6, 2022 | KT88 Schematics Nov 8, 2014 · The economics and component choice changes with DIY, but basic physics of what reduces distortion applies universally. Some of them based on 300B tubes and some are using KT88. Jan 25, 2007 · My Opinion on Aikido KT88 SET, etc. 1. I want to used KT150 tubes. Would I need to up the cathode resistor to Nov 17, 2025 · Suitable speakers for the KT88 SET project Page 1 of 1 [ 4 posts ] Page 1 of 1 [ 4 posts ] Craig, so much respect for your tube amp design. Sep 19, 2025 · 1set 5F8A Tweed Twin Guitar Tube Amplifier DLY Am Kit Note: It is a kit, you need solder and test it by yourself Pakage including: Tube: 5AR4 1pc, ECC83/12AX7 3pcs, 6L6/5881 4pcs 1set tag board 1pc Power transformer, 1pc output transformer, 1pc choke and 1pc chassis , Potentiometers, resistors, capacitors, audio jacks, wires, tube sockets, retainers and so on. I just want to research designs, play with some variations and learn Nov 7, 2017 · I like the suggestions to triode strap the EF86 if you find it too noisy or too sensitive as is. More Jul 4, 2007 · kt-88 amp schematic/parts list I am new to this whole DIY thing. A user-submitted image gallery that showcases some of the best DIY hi-fi projects from around the world. He covers all of Jul 13, 2025 · Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others Ella Push Pull EL34/KT88 Amplifier Schematic Most of the parts are in stock except transformers. - no electrolytic capacitors started on March 10 st , 2012 INTRODUCTION After many years designing single ended amplifiers I have decided to start a series of test about the Push Pull amplifiers Jan 6, 2019 · Happy new year everyone! I've been really busy but have wanted to build the Kegger se kt88 for awhile now and after seeing blueglows youtube videos I'm sold. cheers. for Oct 25, 2022 · My 2x6. The pentode is connected in triode mode will be driving the KT88, there will plenty of current and voltage swing to drive the power Feb 19, 2016 · Are you asking whether anyone recommends "Jean Hiraga" or "Tubelab SSE for KT88 SET"? To drive which speakers? Which version of Jean Hiraga? What do you prefer, solid state amp or tube amp? In terms of building and sound? Jan 16, 2018 · Dear Colleagues, My father and I made our first SE tube amplifier and now are preparing to create a more powerful KT88 PP. Re your 2nd point, fair enough, but if you prefer the sound of triodes, and I agree that many do, then the supposed benefit of UL on SE re distortion has no relavence. I certainly aggree that using the secondary for feedback to the cathode works well - in reducing distortion Aug 18, 2023 · Having a hard time zeroing in on which amp to build, Elekit or SunValley, add to that the KT170 run in SET vs 300B. 99 each. High-Quality Vacuum Tube:The Shuguang WEKT88 Plus is a premium KT88 valve, offering superior sound quality for We are a factory of the guitar tube amplifier part, we have many different kinds of the amplifier part:vacuum tube, tube socket,amplifier chassis, turret board,volume knob, toggle switch,rotary switch,RCA plug, binding post and so on. I assembled one channel on test bench and it seams that it works fine. 89. I wish there is an idiot guide to tube amp building, but there isn't. Cathode Bias resistor is 500R set up for KT88. In fact, a friend give me a spare matched quad of NOS (plain old) Gold Lion tubes + the needed output transformers so . In the internet, I have found several schematics (attached, including one from this site). I would be more than happy with 10Watts of power, but need something with clean deep bass. if you need more, please  contact usFree shipping by fast ship method. Tube compliment in the photos is a Sovtek 6N1P in the driver position and a pair of matched Electro-Harmonix KT88EH in the output positions. and I’ve built many. There is a schematic of what I've done so far. Now because of the lack of instructions i decided to email the seller, this is what he sent me for help, pictures of it Nov 10, 2019 · DIY Vacuum Tube Amplifier Projects Do-It-Yourself (DIY) vacuum tube (valve) amplifier and tube preamplifier projects. However, I am still relatively new to DIY, so I have a couple of questions: Nov 9, 2009 · Hello everyone, I am going to build the Abdellah SE KT88 as modified by Alex Gendrano. Sep 16, 2006 · I am looking for a detailed KT88 mono schematic utilizing 8 KT88's in push pull with 6sn7's as drivers. Dec 1, 2008 · I'm getting ambitious and want a winter project for after Christmas. My speakers are very efficient, so there should be no problems with 7 watt SET amps. Nov 3, 2025 · SE KT88 - More first build / transformer questions Page 1 of 3 [ 22 posts ] Go to page 1, 2, 3 Next Page 1 of 3 [ 22 posts ] Go to page 1, 2, 3 Next Jul 1, 2014 · About the most you're gonna get into the load with a single KT88 and decently low THD is about 18 watts at onset of clipping, with a 3. Mar 31, 2013 · Hi Guys As more as I try to inform myself as more I get lost After a few nice builds using pcb boards I would like to build an amp using poing-to-point wiring for my next build. Heck, you can even buy it fully assembled with tubes included if you wanted. This Kit includes our most requested Mk3 upgrades, and includes our upgraded boards, and latest chassis version with iec power cord cut out and holes for heavy duty binding posts Oct 21, 2010 · Hi, I have been running my stereo KT88 SE for about 10 months now at a minimum of 50 hours per week. I always considered tubes to be inferior to transistors but nevertheless I really liked reading and learning how tubes work (Morgan Jones's book and several websites) Nov 8, 2014 · Hi everyone. TU-8850 is an excellent amp TO run with KT170, it can give you 16W per channel Jan 10, 2010 · Greetings from France, This seems to be a very good work, a nice KT88 Williamson push-pull. I already have the acrylic plexiglass for the custom chassis and have begun assembly, and now I'm looking for a good schematic for a single-ended EL34 or KT88 stereo amp. Jun 30, 2007 · I don't know which generation they are but I'm sitting on a pair of 10W 5K:8 Transcendars destined for a Mikael-style KT88 SET amp. These are the big bottle designs. That's about 40 weeks X 50 hours = 2000 hours. Example: 2 Amp Fast Blow, in series with 1 Amp Slow Blow The amperage of the Fast Blow is determined based on the Inrush current at cold turn on, and also the inrush current with the amp hot, and switched off and on (Hot start). However, I am still relatively new to DIY, so I have a couple of questions: 1) The KT88 is wired as a triode in this diagram, correct? I'd like to wire in a switch to flip between triode and pentode or ultralinear mode. I am building a SET KT88 as well, not building it from scratch though. - JoshK - Tube DIY Asylum138. For the tubes, I decided to use some KT88. This video will help you pick easy to find parts and yet maintain a high The first filter LC pair is -55dBv. New & NOS power tubes from Mullard, Tung-Sol, Telefunken, Sino, GE, Telefunken & more! Apr 3, 2016 · To the matter at hand. H The KT88 can be used quite successfully in many ways, as it doesn't seem (to me anyway) to be that special as a SET, making it quite equally adaptable for more power, and hence able to drive many types of speakers. So using a 4000ohm output transformer might yield better THD in UL mode. KT conversion KIT $245. M. It's a SE amp with a 5687 as a driver tube and two KT88s (one per channel obviously) on the output. A step by step build of a single ended KT88 Stereo DIY tube amplifier. Especially interested to hear about filter chokes and The OddWatt ODDBLOCK amplifier kits are great sounding class "A" amps at an affordable price. Jan 18, 2020 · A KT88 variant was built using Edcor output transformers with a primary impedance of 4. This puts the power section filter at ≈ -80dBv. I will be using 6BM8 to drive the KT 88, 6BM8 is a triode and pentode in one tube. Apr 7, 2021 · The ones I use have 6600ohm primary impedance and as far as I can tell, KT88 will work well with 4000ohm or below. Want to to home-brew your own TriodeUSA Upgraded, Dynaco (tm) style, Mk3 mono tube amp kit? Here's the kit for you. I also have some 511 horns and may end up with those instead. Then there are the other options of attenuator, cap upgrade, and I think that is it. Eventually, I changed out the KT150's for more appropriate KT88s. There are number of amps available here on the Agon. You can easily bias it with a single solitary voltmeter through the front and done! Nov 1, 2008 · Pretty good looking kt88 st pp design. Some of these photos are during the build so they may not appear complete. For simplicity & aesthetics I prefer diode Jan 16, 2022 · I'm in the process of building my first tube power amplifier. Thanks to two operation modes and Active Automatic Bias circuit, you can use it with plenty of different power tubes like 6V6, 6F6, 6L6 series, KT88, KT90, EL34 (6CA7), 5881, 6550, as well as KT120, KT150 and even KT170. Old Style KT88-STR TAD Premium Matched Our favourite Tube in the KT88 / 6550 Class The latest version of our TAD KT88-STR is built in the style of the early British MOV KT88. 150 In Reply to: Aikido KT88 SET, etc. Nov 9, 2025 · Who is online Users browsing this forum: No registered users and 0 guests Sep 17, 2024 · Here’s one of the compact KT-88 SET’s I built. Its wonderful tone Nov 3, 2022 · So I bought a pair of GEC KT88 at an auction and one of them was bad, made a cracking noise at power on while volume pot at zero, quickly switched off, replaced the tubes, and now I can hear really low volume in my headphones when volume is all the way down at zero? This didn’t happen before Nov 9, 2025 · Who is online Users browsing this forum: No registered users and 0 guests Dec 7, 2023 · The Nuance - My "Inverted SET" DIY Project Here's my latest project, which I had breadboarded for most of last year. Yeah, I'm slow. 32. Mar 2, 2013 · Then three diy options -- no tubes (supply your own), with EL34, or lastly with KT88 tubes. Sep 10, 2014 · A DIY Single-Ended (SE) Tube Amplifier Project that is compatible with KT88 / 6L6 / EL34 / 6CA7 tubes. Oct 31, 2025 · Who is online Users browsing this forum: No registered users and 0 guests I've been considering building this Single-Ended KT88 amplifier. 2 k Ohms as well as Hammond 1650N OPTs and those are 4. The previous owner sold it to me with a set of 8 KT150's. May 6, 2022 · Attached is the simulation of my KT88 tube amplifier. Thouse that use KT88 are less expencive to buy, and so are the Jul 1, 2025 · Imho, you can simulate and assess, and/or tube roll and assess, your way to identifying and rationalizing what may be a 'significant impact in performance'. Oct 17, 2020 · They are very similar, the KT88 being of UK origin, and the 6550 of US origin. Any help will be greatly appreciated. -T. Your Toridy transformers are probably spec'd out around that mark probably. KT88 SET | DIY Hifi SupplyKT88 SET Apr 6, 2024 · I am building a SET KT88 as well, not building it from scratch though. e. Consist of brand new JJ Electronic tubes: KT88 x 2 + ECC83S x 1. Both can be run in either triode or pentode wired circuits as well as UL. We also stock Fender and Marshall style fuse replacements. thanks Nov 5, 2025 · Elekit TU-8400 is a DIY kit of a pentode single ended power amplifier. Does anyone have a diagram of how I would wire the switch? 2) The KT88 is cathode-biased, correct? Which means Find 1784347 mikael abdellah schematic simple low parts kt88 set circuit 3D models for 3D printing, CNC and design. Our focus is on aesthetics, design and build quality. TU-8850 is an excellent amp TO run with KT170, it can give you 16W per channel Aug 18, 2023 · TU-8850 can run KT88/EL34 but I think KT170 is the best for TU-8850. Forgive for not pardoning it. I have searched the forums and have not been able to find a specific reference to the purpose of the 5H 250R choke and 10uF cap for the 6N1P plate as shown on the schematic I just finished building my KT88 SET amp for my office/workshop setup. Re: Aikido KT88 SET, etc. Blueglow has a BOM and a series of build videos. (this is the circuit I Built with high-temp glass, high-performance plates & gold-plated pins, these hand-made tubes sound as good or even better than the Genelex KT88s. The top aluminum plate is 0. Single Ended RULEz! 211 SET using ECC88 and 5687 Driver by Jasmin | Jun 6, 2022 | 211 Schematics « Older Entries Next Entries » Aug 18, 2023 · TU-8850 can run KT88/EL34 but I think KT170 is the best for TU-8850. Sixty all tube watts, in a compact design. I have been researching and looking at designs to familiarize. This calculator allows you to compute and tune loadline and operating point of tube amplifiers’ power stages, for most common power vacuum tubes. This is based off the popular Kegger/Abdellah/Blueglow build with a twist, using a pair of 6EJ7 driver tubes! Jan 6, 2019 · I've been really busy but have wanted to build the Kegger se kt88 for awhile now and after seeing blueglows youtube videos I'm sold. 410v and 0. Oct 15, 2018 · I was hoping to get some feedback on the layout for a KT88 single-ended amp that I'm building. Eric The KT88 output tubes are new Genelex factory matched platinum Gold Lion, among the best of newly manufactured KT88 tubes. The schematic I am basically following is one i think i found on this forum. Please be aware that most of these vacuum tube projects use potentially lethal voltages that can kill you so do not attempt them if you are not familiar with high voltage safety! Some of the projects use low voltage and if you are new to tubes and high voltage safety you should Nov 30, 2009 · A review of the OddWatt Audio 5751 SRPP / KT88 Push-Pull Monoblock Tube Amplifier Kits. (it's a circuit that I've been using and refining for a while now) :) (updated again) 2015 This is for KT88 based Single Ended Ultra Linear amp using very good output transformers. Enjoy music - hear more of the music and less of the gear. That's an easy change, so I say build it as you drew it out and then tweak it to hear the difference first hand. Any pointers as to suitable circuits. Mar 27, 2025 · I am looking at building the Kegger / Blueglow KT88 SET amp and I would like to see how well I can make it perform with upgraded parts. - JoshK - Tube DIY AsylumJoshK (A In Reply to: My Opinion on Aikido KT88 SET, etc. They can be used as drop-in replacements for each other without mods. Unfortunateely, I can't find place to audition them so I need your help. Even with the 22µf first capacitor this should be a very quiet power supply. You give up a couple of watts of output and a tiny bit of bass response, but they have really great mids and highs and they can be purchased at tubedepot. I have such an amp with a 5965 driver and it's very musical. Posted by Thomas Martens on January 25, 2007 at 11:36:56 In Reply to: Single Ended KT88 posted by Jayme on January 25, 2007 at 09:56:01: Yes, the KT88 is a great tube for SET amps when triode connected. 22uF Aug 18, 2023 · Hoping to start a thread on simple’ish amp builds, would love to see what you guys have built, any challenges. 435v, etc. After installing these tubes and biasing them to 70mA 560 ohm R was time to see what I thought of this design based around a 12AX7 plates strapped together , mine set to 2mA and bias -1. May 3, 2025 · SE KT88/6550 indeed are GE6550 tubes ! for my AirTight M101 inspired design . Auto-bias module is not available. I'm actually thinking of building my own KT88 push-pull, with parts of a defekt Music Angel XD800 amp. The Mk3 was the top of the Classic Tube Dynaco line. I’ve built some crazy amps so I don’t like to post up project builds that are a failure. As I don't need a lot of power I thought to build an amp around KT88 tubes, but single ended. You where the one to start Feb 28, 2006 · I have the problem with my KT88 PP stereo integrated amp to set bias voltages of KT88 of which scheme as below; If I set Vk to the same value by adjusting the pots for both tubes, I have audible hum so I cannot set them to the same value but different values, I. It might be Porkchop's (porkchop since you just did a build like this one I am With your budget range of $350-700 USD for drivers you have plenty of options. Most of the discussion about Single Ended Triode amps (and amps in general) seems to center on the type of output tube that's being used. The pentode is connected in triode mode will be driving the KT88, there will plenty of current and voltage swing to drive the power Nov 11, 2025 · 1set 5F8A Tweed Twin Guitar Tube Amplifier DLY Am Kit Note: It is a kit, you need solder and test it by yourself Pakage including: Tube: 5AR4 1pc, ECC83/12AX7 3pcs, 6L6/5881 4pcs 1set tag board 1pc Power transformer, 1pc output transformer, 1pc choke and 1pc chassis , Potentiometers, resistors, capacitors, audio jacks, wires, tube sockets, retainers and so on. I ran some EL34's in my prototype and they sound fantastic. I enjoy my 5 watt se builds but have a party coming up this spring and need more power so am ready to get started but have a few Jul 24, 2016 · Our collection of Hi-Fi Audio Schematics. Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others Jul 19, 2011 · I have been asked several times for the layout of my "KT88" based Single Ended amplifier. Is it correct to interpret that I have oscillation around 1 Hz area? Do I need to worry about at all since it's way down there in frequency band? Thanks. com for as little as $13. The JJ EL34's sound better to me than the Electro Harmonix EL34's so far. Feb 19, 2007 · se 300b or pp Kt88 amps ? Which amps sound better, single ended say using 300B tubes or the more usual phase splitter (PP)designs, say KT88 ,EL34s etc? Is there a difference? I have been looking at music angel se 300B amps and comparing them to PP KT88s amps. I wish I can reuse the wood+metallic case, the 4 Shuguang KT88 tubes, and the 4 transformers (output + power). Iron to be defined Sep 12, 2008 · I have collected most parts for this amp, actually the Alex Gendrano version shown below. And, well, it is probably not fair to say I am willing to spend every dollar possible on it, I am open to a significant investment. Although it was during a show, I would “steal” the seat in the room often to listen as much as I Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others Re: My Opinion on Aikido KT88 SET, etc. At once components are soldered Apr 6, 2024 · I am building a SET KT88 as well, not building it from scratch though. The SunValley is very intriguing but a bit intimidating from a build point. The voltage/current Mar 20, 2008 · Those of you who don't know Michael, he is an avid and well respected poster on AA's tube forums (SET, Tube DIY, etc). I'm interested in buying a pair of the Electro Harmonix 6CA7's to try in this amp. Please email to us if you want to have a quotation of the available parts Using Auto-Bias Module Feb 25, 2018 · BG157 - New series on how to build a KT88 Single Ended Amplifier. 300B is a fine tube, but really is only good for about 6 clean watts, and is much more expensive. Feb 12, 2022 · Kegger/Blueglow KT88 SET/UL, can use other octal tubes. It contains all required parts including enclosure. Traditionally, the SET outputs are all directly heated. The TU-8800 is a single-ended power amp kit that supports many popular octal-base pentode and beam power tubes. Frankly, I seriously doubt the Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others Jun 29, 2023 · Hi all, Could I just have a confirmation please? I have the KT88SE build, as per Kegger/Blueglow schematic. Oct 15, 2018 · A good order of wiring is: Hot; Fuse; Switch; Primary; Primary; Neutral I use 2 Fuses in series. Flickering power can cause a Hot start inrush. Anyway, here are some pictures of my progress so far: SET 1. I also installed a pair of Mundorf MCap-Supreme capacitors 0. The TU-8800 is the culmination of ELEKIT's best designs and circuitry from their previous amp models. I will be constructing an amplifier based on the infamous Mikael KT88 SE schematic that seems to be a favourite schematic to build. By simply changing the power mode, 6V6, 6L6/EL34 and most of the KT series tubes can be used. 3 - 0. In fact, you can use different KT tubes to match your taste. I once had a Leak stereo 20 which I loved, but had to get rid of it in the end because the bass was so flabby. I was curious if you have tried tungsol's NP 6550. 5K reflected load, 400V p-k, 250V on the screen, and about 125mA max Ik with grid bias set around -16V, and several dB of loop NFB. Around 8 watts triode, 12 watts or so, ultra linear - it's still in shipping boxes waiting to be made. 7M « 1 2 3 » PWRRYD Apr 3, 2013 · Howdy gents, Preface: I have a DIY KT88 SET Kit in the works. Shoog Click to expand Jun 30, 2023 · This is a final overview video of the muzishare X7 vs the R8 and some tube rolling advice. While I applaud your enthusiasm, I would STRONGLY urge you to purchase the latest 2 volumes of Morgan Jones' 'Valve Amplifiers' handbook. Can I'm so happy that I found the Bottlehead community right at the beginning of my diy tube hifi pandemic hobby. I have been doing some reading online and I think I want to make a stereo amp using kt-88 tubs and hammond 1650N output and 274 power transformers. I would like to build an SE amplifier with two parallel KT88 output tubes. This setup in the X7 Mar 25, 2005 · Re: KT88 vs 300B in SET mode - Thorsten - SET AsylumRe: KT88 vs 300B in SET mode Posted by Thorsten (M) on March 25, 2005 at 12:15:40 In Reply to: Re: KT88 vs 300B in SET mode posted by Yogesh Verma on March 25, 2005 at 11:25:06: Hi, > Actually my understanding of the anode curves is very > limited so again please pardon my ignorance. PWRRYD Oct 20, 2009 · Can someone explain general sonic differences between the EL34, KT88, 300B, 2A3, 805, 845 in SET and PP configurations in terms of bass, midrange, highs, tonality, sound stage, dynamics, resolution, imaging, harmonics, etc. 3 k Ohms. Just wondering if any of the veteran sages on the forum have any advice as to changes they personally would make to the amp and/or PSU circuits. An upcoming post will be a scratch-built KT88 amp! Jun 18, 2023 · These will employ 515GHP woofers taken out of a 9864A system. I am currently running 120 mA through transformer and eventually I will increase current Aug 2, 2018 · KT88 Valve Tube Amplifier Single-ended Class A Stereo HiFi Amp DIY KIT 16W+16W | eBay And the instructions it came with are rubbish! I mean seriously how lacking is this? I decided to make a start by putting on what i could. I've built several solid state amplifiers but never a tube one. My favorite DIY is a KT88 SET that was modified by a tech I know from a hand built one made by a guy in Australia - Eric McChanson Nice match for my ML3 Reference even though they are only about 90db sensitive - it produces more than enough volume for me. The support I received from all of you gave me the confidence to branch out to related projects like tube radios, turntables, guitar amps, and even some vintage transistor gear. Thouse that use KT88 are less expencive to buy, and so are the Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others Optional TAD Set: Black Plate KT88, Premium 6SL7, Red Base 5U4G I first heard the DIY version of the Aegis Amplifier at CanJam SoCal in 2022. To get reasonable bass output I would suggest you look at drivers in the range of about 8" and a sensitivity of 95dB+. With a 100µf capacitor after the resistor, the filter section is about another -25dBv. Assuming ≈85mA and assuming you'll have to drop, in the neighborhood of, 20v, R-tbd should fall in at about 240Ω. I'd be curious if there are references for the various output tube Nov 25, 2016 · I was able to finish making the hickory case before the weather turned cold here. . The color is cast iron blast. - Thomas Martens - Tube DIY Asylum80mA of current? I'd think getting a full 500v supply voltage and using a higher value bias resistor to allow 85-90mA to flow at that level using the 2500 ohm primary for a very clean 8-9 watts would be more the ticket. com that was originally of mikael abdellah's amp. Many We carry an assortment of fuse and fuse holders for typical glass fuses and AGC blocks. My knowledge of electronics theory is limited (relating to valve tech) but I'm confident with a soldering iron, as well as following basic safety guidelines. The amp is switchable between triode and ultralinear operation, so I have probably run it about half-and-half in each mode. [Im not affiliated with this in any way] It is set up with a sourced parts list, and said to be under 500 dollars to build, both very nice deals, but the help would end with whats in the magizine. 090" thick and is painted with Duplicolor 500F engine paint. Nov 30, 2009 · Design and construction of a pair of push-pull class-A, Ultra-Linear Mono Block Tube Amplifiers that can be used with several different power vacuum tubes including EL34, KT77, 6L6GC, 6550, KT88, KT90. Could you please help and advice which one is the better to choose? Or may Aug 25, 2009 · hi all, I am collecting parts for a build of the se kt88 shown on diyaudioprojects. Although our community is always nice for instruction. So I still have 8 young KT150s on hand. 4pcs 1 matched quad Shuguang WEKT88 Plus Vacuum Tube KT88 Valve Power Lamp Western Electric Replace Psvane Mullard Vintage Audio Amplifier DIY HIFIWarranty : 1 yearPrice is for 4pcs 1 matched quad. Jul 19, 2011 · I have been asked several times for the layout of my "KT88" based Single Ended amplifier. Found plenty of ultra linear Hi-Fi KT88 designs, but not much for single ended guitar with KT88. Oct 28, 2025 · Empire 598, DIY Direct Drive, Sota, modified Pro-ject, Phillips 212 Dynavector Ruby Karat 23MR-RS, Grado Sonata II, Hana EL, AT 33PTG II, Goldring 1042, several others PP2012 - 25 -35 W Extreme Hi - End Push Pull Amplifier THIS IS NOT A COMMON PUSH-PULL! - very low feedback only 16dB - low distortion near to 0. I The first filter LC pair is -55dBv. Power Supply for KT88 SET Page 3 of 3 [ 21 posts ] Go to page Previous 1, 2, 3 Previous topic | Next topic Author Message wdecho Post subject: Re: Power Supply for KT88 SET Posted: 10 Jan 2016 12:23 am Joined: 18 Aug 2015 1:38 pm Posts: 190 babblefish wrote: famousmockingbird wrote: May 2, 2021 · AUDIO Note Copper $275 WBT 805 Silver Solder 42G $45 This kit allows you to select between 300B or KT88/120/150/170 tube set. I bought an existing EL34 SET amp and modify it to run KT88.