Triple-Chip Programmable Sound Module • 9-Voice Retro Wave Synth

As these chips haven't been manufactured in decades these are all chips pulled from recycled machines, in various states of surface wear and from various years of production; 83-97. I will do my best to clean each chip but there will be scratches, and signs of wear due to age. You can check each chips age by the markings, ex. 9213 = 13th week of 1992. These chips are very resilient, and the surface scratches do not affect their performance.

One of a kind, original design.

Key Features 9 Total Voices Three sound-generator chips, each offering three square-wave channels. Gold plated sound chip sockets keeps chips snug. Mono / Stereo mode switches for each output. Can power with PC USB but sound quality will be a lot better if powered on its own power source.

Adjustable Volumes Master mix output plus three individual chip outputs—each with its own level control.

Versatile MIDI I/O • USB-MIDI for plug-and-play with any DAW • 3.5 mm MIDI TRS A jack for classic gear integration

Per-Channel Voice Routing: Maps MIDI channels 1–9 to specific chip voices: Channels 1–3 → Chip 0 voices A/B/C Channels 4–6 → Chip 1 voices A/B/C Channels 7–9 → Chip 2 voices A/B/C

LED indicates midi activity per chip

Effects: Use pitch bend wheel for ±2 semitone bends. CC 1 – Mod Wheel → scales vibrato depth CC 4 – Volume Env Shape: 0=OFF, 1–63=Ramp up, 64–127=Ramp down CC 5 – Portamento Time → glide speed (0.005–0.5) CC 7 – Channel Volume → alternate expression control CC 9 – Pitch Sweep Amount → max semitone sweep (0–2 semis) CC 10 – Pitch Sweep Envelope → < 64 = attack, ≥ 64 = release shape CC 11 – Expression → per-channel volume scaling CC 64 – Sustain On/Off → ≥ 64 enables sustain (send All Notes Off or set to 0 to stop) CC 65 – Portamento On/Off → ≥ 64 enables glide CC 68 – Laser-Jump On/Off → ≥ 64 triggers one-shot “laser” jump on note-on (with portamento on) CC 69 – Laser-Jump Amount → 0.0–1.0 blend toward zero for the laser effect CC 76 – Vibrato Rate → 0–10 Hz LFO speed CC 77 – Vibrato Depth → 0–2 semitone LFO range CC 85 – Vibrato Delay → delay before LFO engages CC 120/123 – All Sound / All Notes Off → channel reset

Audio Routing • 1× mixed stereo/mono output • 3× solo outputs • Output mode switches for each channel

Specs & Requirements Power: 5 V via USB or external regulated supply

Connector Types: – USB-Micro for power & MIDI – 3.5 mm MIDI IN – 3.5 mm audio outputs

• Knob and LED colors may differ from photos. depending on what's in stock.