Studio Electronics ATC-1 Tone Chameleon

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"Very powerful analog synthesizer, with four filter cartridges and the Selector, the rack module allowing all four cartridges to be ready for use instead of plugging them one at the time on the rear of the synth module. OS 2.0, the best working of all. Cosmetic condition is near mint. Functionally it's flawless, it works like a swiss watch."