MATRIXSYNTH: Rare 1966 Johnson Intonation Trainer Vintage Analog Synthesizer Tunable Keyboard

Saturday, September 07, 2019

Rare 1966 Johnson Intonation Trainer Vintage Analog Synthesizer Tunable Keyboard


via this auction

You can actually find a couple of demos of the Johnson Intonation Trainer in the archives here.

"Very nice and ultra rare Johnson Intonation Trainer Synthesizer from 1966 with Tunable Keyboard.

Made by the E.F. Johnson Co in 1966 Waseca, Minnesota U.S.A.

Speaker in case, it can also connect to external amp or mixer.

Note from users:

Voicing - choose from four voices, basic sine wave to reedy / edgy

Scale Selector - choose between reference (tempered tuning) or tunable

Tunable Scale Controls - correspond to notes on keyboard and adjust pitch in tunable mode

Originally used to test the relationship of pitch-matching and pitch-discrimination abilities

It's FULLY polyphonic with vibrato etc. Cool for Drones and Experimental music, original manual inlcuded.
Conditions are at TOP! Excellent cosmetic conditions with an unique design and in perfect working order."

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