ADDAC System ADDAC301C Dual Sustain Pedal Switcher
Little is documented about the ADDAC301C Dual, and most of what survives is retailer copy. It's a passive dual sustain pedal switcher in 4 HP, built to bring foot control to a modular setup. Period listings describe the idea plainly - plug any CV or audio source through it and gate it on and off with a standard sustain pedal. Perfect Circuit (n.d.) described it as a module for "gating your modular signals" and adding foot-control to a system.
The documentation stays thin from there. The module is passive, so no power is required, and it measures 3 cm deep. It appears to have been offered in both black and red faceplates. No production years, original price or detailed circuit description have surfaced. Pricing varied across retailers - one outlet listed it at $80, another at $109, and a UK dealer at £74.50 - but no single authoritative figure is confirmed.
Known specs:
- Passive dual sustain pedal switcher
- Width: 4 HP
- Depth: 3 cm
- Available in black and red faceplates
No user reviews, owner opinions, or maintenance information has been found. For a module this simple, that may be the whole story — a utility piece that did one job quietly.
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