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The POLY1 is a fully analog, "dirty" 22 note polyphonic square wave synthesizer with built-in distortion.
- One-off, custom circuits on perforated board
- Handmade, painted wood+plastic piano key overlays
- Built-in amplifier, speaker, and line-out jack
- Powered by 9v battery or guitar pedal AC adapter
- Cigar box enclosure
See it in action here.
External controls: 22 keys, distortion switch, volume knob + on/off switch
Internal controls: 22 trim potentiometers for tuning notes
IC Chips: CD40106, LM7805, LM386
Input/output: 9v power jack, 1/4" mono audio out