“Up for consideration we have a Rare Vintage 1970’s SWTPC Psych-Tone Composer-Synthesizer, Untested. This Psych-Tone Composer-Synthesizer measures 10 3/8″x 7 1/2″x 4 5/8″, and comes with a 60″ cord. This Synthesizer is untested, and missing its back, but looks very cool. The Psych-Tone was basically a random note generator that used three twelve position rotary switches and three knobs to vary the pitch of an oscillator. The oscillator output went to a tone shaper and then an envelope generator/VCA.” Click here to visit listing on eBay
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SWTPC Psych-Tone Composer-Synthesizer
“The SWTP Psych Tone is a vintage kit from 1972, based upon the Triadex MUSE Box. It is a note pattern generator, minimal synthesizer controls like Attack and Decay and fixed tone filters. Would be great repackaged as a part of a modular synthesizer. This kit is scraggly wiring inside but mostly works. It has a small quiet speaker but I run it with audio jack out into an amp or mixer. ”