Evil Science Audio
Electronics Service & Repairs in Portland, Oregon
Repairs & Restorations
Bogen MO-100 P.A. Amplifier
Dunlap-Clarke Dreadnought 1000
HP 200CD Wide Range Oscillator
Marantz 2270 Receiver
Tektronix Engineering Power Supply
SMD Repair: Eleven Rack Guitar Effects
Contact
Tube Audio Designs
Custom Guitar Amp Prototype Build
My 6KV8 Push-Pull Driver Board
Reference Library
Tube Manuals & Data
Guitar & Instrument Amp Schematics
Hi-Fi Schematics
Switch-Mode Power Supplies
Archive for the tag "vintage electronics"
Eico HF-81 Rebuild
December 22, 2017
Custom Guitar Amp Prototype Build
December 22, 2017
The 89Y SE Headphone Amplifier
July 3, 2016
Push-Pull 7C5 Amplifier in Vintage Style
June 28, 2016
The 89Y SE Amplifier – In Progress
October 14, 2015
Single-Ended 807 Amplifier
May 27, 2014
Single Ended 6K6 Amplifier – a Gift!
January 14, 2014
Phil’s Old Radios
November 19, 2013
Push-Pull 6B4G Amplifier
November 12, 2013
Series Regulated all-Tube Power Supply
November 10, 2013
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