Pete Milletts DIY Audio pages. Pete Milletts DIY Audio pages5. For. technical books, tube data, vintage data, transformer data, and Mc. Intosh data. go to www. Last update 31. Added. Nu. Hybrid headphone amp, a low voltage hybrid. Korg Nutube 6. P1. Added a. buffer PCB using the Korg Nutube 6. P1. low voltage dual triode. A 5. 0W monoblock version of the Engineers Amp. PLEASE READ Commercial usage. I consider all the information that I post here to be in the. So, you can use it however you want, for commercial or non commercial. That said, I would appreciate it if you at least let me know if. PCB Gerber files to make commercial. PCBs. There are some cases where products are being sold not only with. The Millett Hybrid. Head. Fi are examples. DIY community should work, in my. There are other cases where I have asked vendors to sell PCBs. And there are other cases where companies are manufacturing and. PCBs, chassis, etc. In ALL of these cases, I make no profit from any of the. Zero, zip, nada. I have a normal day job that. So please do not expect. I try and help, but it sometimes takes me days even weeks if. Im traveling for work to respond. Thanks for your indulgence in reading this All that said. I do sell. Learn how to do just about everything at eHow. Find expert advice along with How To videos and articles, including instructions on how to make, cook, grow, or do. Tubes 4 HiFi is also known as Vacuum Tube Audio. Our best known product is the VTA ST70 PCB modification for the Dynaco ST70 amplifier, that first appeared in a. For technical books, tube data, vintage data, transformer data, and McIntosh data, go to www. I no longer need, PC boards for my designs, and. I do this through e. Bay I. maintain an e. Bay store pmillett. You can. I may be selling at the moment. The Nu. Hybrid. headphone amp like the Millett Hybrid but using the new Korg NutubeHere is our Dynaco ST70 page our famous VTA70 driver PCB upgrade for your amp Line6 Helix Guitar Effects Processor Review Inside and Out. The most indepth best review there is. Is this effects unit really any good 20,000,000 Visitors and counting fix my hit counter and earn credit, LOL We salute our Nations military, past and present. IN WONDERFUL ALBANY, NY, USA. Philosophy Metaphilosophy Metaphysics Epistemology Ethics Politics Aesthetics Thought Mental Cognition. Korg Nutube 6. P1. This is a depository for various audio designs and projects. Ive put in the public domain, as well as additional info to support magazine. Ive written, and an ever growing amount of technical data archives. Im constantly adding and updating things. Remember. you may have to hit the refresh button to to see the updated versions. Follow the links below for detailed info. Most pictures. If you have questions please feel free to e mail me at Please. I get its. up to about 1. If I dont respond within a few. I missed your message. I try and return. I travel quite a lot for work and find I. Please be patient. Standard disclaimer This info is provided with no. Theres no guarantee that if. Be careful Many files on this site, especially scanned documentation, are. Adobe Acrobat PDF format. I recommend that if you dont already have. Adobe reader. Some files have. Acrobat. reader. Scanned vintage books, manuals, catalogs, papers. Please. go to www. Audio projects and experiments Power amps. NEW 12. 11. 7. Engineers Amp. PL1. Luxuriante stereo R1. SE amp. Fatboy, a low distortion zero feedback. B amp. compactron triple triode driver for push pull amps. Mr. Potatohead 8. W from 2 tubes in class. AB2 The 8. 07 Push Pull. Push pull. driver PCB, a nearly universal driver for push pull ampsJonokuchi, a single ended tube. Class A2. 1. 63. The. Engineers Amplifier, an affordable, high performance push pull. TV pentode amp. The. Unnecessarily Complex 3. B Amplifier from audio. Xpress. 3. 07. A tube, and a push pull 3. A amplifier. The Glowing. Hybrid ampThe Mighty Midget from audio. Xpress 50. 8Low voltage Hybrid amplifier with adjustable dampingA Single Ended E Linear. Amp from audio. Xpress 40. Push pull. B4. G class A amplifier. Push pull. KT8. 86. L6EL3. 42. A33. B amp with universal driver power supply PCB8. B. triode mode SE amp. EL8. 02 push pull single stage spud. EL3. 4 active loaded SRPP parafeed. Preamps Line. Stages. NEW 31. 11. 7 A. PCB using the Korg Nutube 6. P1. low voltage DHTel escorpion. VDC. A solid state. LR phono preamp no caps in the EQ from ETF. A high end Tube Microphone PreampA. Low mu preamp from Audio. Xpress 20. 4Pentode phono preamp. Headphone Amps. NEW 31. Pest Factors Affect Marketing Activities Schedule there. The. Nu. Hybrid headphone amp, a hybrid headphone amp. Korg Nutube. DIY Butte solid state headphone ampJonokuchi, a single ended tube. The Starving. Student hybrid headphone amplifier. Wheatfield. Audio HA 1 tube headphone amp. Low voltage tube hybrid headphone amp. Millett Hybrid amp from Audio. Xpress 1. 10. 2Wheatfield. Audio HA 4 headphone amp solid state, with crossfeed and EQSRPP. ECC9. 9 tube headphone amplifier drives AKG K1. Test equipment. audio dummy load. Card Interface AC RMS Voltmeter you can build. Tube regulated high voltage bench power supply Software. HP 8. 90. 3 audio analyzer Make professional plots from this. Other stuff. power AC sequencing board for big amplifiers. W B flyback supply switching power supply that. DC 5 2. 0VMuting relay PCB to eliminate the thumps. High voltage. regulator Maida regulator that fits Landfall Systems heatsink. Tube amp power supply PCB with bias supply. Panel. Pilot. MOSFET follower buffer for class A2 grid drive. Opamp experimenter board. A. simple regulated DC power supply filament supply. Tube. active crossover High Frequency filament converter for DHTs. Speaker projects MLTQWP speaker using the Jordan JX 9. S driver. Adire. KIT2. Bert. Doppenbergs TQWP project. Downloadable drawings for An Affordable. Full Range Speaker Project, Audio. Xpress 60. 3 uses Fostex FE 1. Glass Audio and Audio. Xpress articles Ed Dell at audio. Xpress has been gracious enough to allow me to reproduce here. Ive written for Glass Audio and Audio. Xpress magazines. A Low Mu triode. Preamp 1. MB PDF file from Audio. Xpress 0. 20. 4Build A Low Voltage. Tube Hybrid HeadphoneLine Amp 6. B PDF file from Audio. Xpress 1. 10. 2. Millett Hybrid. Power Transformers For Audio Equipment. MB PDF file from Audio. Xpress 60. 1All About Wire. B PDF file from Audio. Xpress 80. 1The. Power Line Interface 1. MB PDF file from Glass Audio 60. Miscellaneous technical information. LR Phono Preamps presentation from ETF. PDF. to get stuff an assorted list of some of my suppliers. Tektronix power transformer. Info Ive collected on classic tube type Tektronix power. Res. Calc, a cool utility program. Parts shopping in AsiaThe Sound of Distortion. ETF. 0. 4High Gm driver pentode test data. Ixys. current regulator as a CCS plate load. CAD. programs for the DIYer. Other non audio stuff A picture collection of interesting. QSL cards that I received in the early 1. Who I am A lifetime electronics geek, I got a ham radio license at the age of 8 and a. Im just old enough that I. Ive been an electrical engineer for. I owned and operated Wheatfield Audio. I also. have written articles for Audio. Xpress magazine formerly Glass Audio on occasion. I do some commercial audio design work outside of my day job. Some of my. Apex Hi Fi product line. TTVJ Todd the Vinyl Junkie. Im currently living near Dallas, Texas, and work for a semiconductor company. These are the HA 1 and HA 2 tube headphone amps, which I designed a long time ago Ive put some info from the old. Wheatfield Audio web site here that might be useful, especially if you own.