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NY Audio Repair High-End Amp & Pre-amp Repairs & Modifications
https://nyaudiorepair.com/amps-pre-amps.html
Futterman Goldmund Jadis J.C. Verdier Jeff Rowland Design Group; Krell KSS Linn Madrigal Manley Marantz Mark Levinson McCormack McIntosh Melos Meridian New York Audio Labs (NYAL) Pass Labs PS Audio Quicksilver Rowland Research; Spectral Threshold Valve Amplification Co. (VAC) Vacuum Tube Logic (VTL) and more...
The Julius Futterman Story - JACMUSIC
https://jacmusic.com/techcorner/ARTICLES/English/Harvey-Rosenberg/futterman.htm
So Julius Futterman just used just those tubes for Audio. The Futterman amp works with 4 or 6 tubes per channel, and yet due to it's high efficiency produced a lot of output power at low impedance. Such fly back tubes are by nature high voltage tubes, and still capable of 1.6 Ampere (yes!) anode current too.
Futterman H-3A power amplifier | Stereophile.com
https://www.stereophile.com/content/futterman-h-3a-power-amplifier
The Futterman H3-A is one of these rarities—an amplifier designed primarily to complement one of the best, and one of the hardest-to-drive loudspeakers on the market: the KLH Model Nine . The H-3A is unusual in another respect, too. It is probably the closest anyone has come to combining tube and transistor technology, for although it uses ...
Tube Audio Amplifier Troubleshoot Repair and …
https://www.youtube.com/watch?v=LColZ8MOtd0
See a very thorough, in-depth repair and modification of an old Thordarson T20W40 tube amplifier. This includes the "thought behind" the modifications, and s...
Tube amp repair | D & S Tube Audio | Massachusetts
https://www.dstubeaudio.com/
Build your own vacuum tube amplifier with me in my shop. I supply all parts and equipment for you to build your own vacuum tube amplifier. Classes are kept to one or two students per class. Class times are very flexible and are mainly held in the evenings and on the weekends. Call for pricing and to save your place in the next class.
ToneTron Amps-Repair, Restoration, and Modification Guitar ...
http://www.tonetronamps.com/repairs-restorations-mods.html
Amplifier Repair Serving Minneapolis, St. Paul, Minnesota, and beyond. ToneTron Amplifiers specializes in the repair, restoration, and modification of all brands of vacuum tube and solid state guitar amps, instrument amps, stereo receivers and amplifiers, jukebox amps, all types of audio gear, and oddball electronic equipment.. Over 30 years experience repairing vacuum tube …
Expert stereo tube amplifier repair and restoration
Our Passion for Stereo Tube Amp Repair & Restoration. When Saul Marantz and Avery Fisher joined our Advisory Board in 1975, it was to help foster the next generation of innovation in audio. The guidance these giants of the Golden Age of Hi-Fi gave us was received with great admiration for their pioneering accomplishments.
Vintage Audio Repair – USA Tube Audio
https://www.usatubeaudio.com/vintage-audio-repair/
vintage audio stereo repair since 1975 all brands audio video repair vacuum tube audio equipment experts consumer & pro-audio service 100% satisfaction guaranteed!
Tube Amplifier Repair & Modification For All Made., Audio ...
https://www.carousell.sg/p/tube-amplifier-repair-modification-for-all-made-98440686/
Tube Amplifier Specialist for Tube-amplifier Service, Repair & Modification. Confirm working condition by equipment after repairing. Over 50 years in this field. Quote cost in advance. Stock of Brand new & Pre-owned Amplifier, Pre-amp, DAC, Speaker, Cable, etc. Trade-in welcome. Call: +65 9068-6663 James Lau for appointment.
Steve's - Moscode - Audio Circuit
http://www.audiocircuit.com/Home-Audio/Moscode
We are dedicated to being the best HIGH END service and modification center in the world specializing in vacuum tube audio equipment. We have serviced the finest audio equipment and in doing so have gathered information and created a design philosophy that can be applied to repairing and improving your treasured gear.
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