VC ADSR
Voltage-controlled 555 ADSR
Panel · 50.8 × 128.5 mm
Description
The classic 1980 Jacky/Kirschman 555 ADSR with its attack, decay and release pots replaced by LDRs in black boxes, so each stage is voltage-controlled: wobbly, evolving envelopes. With the LDRs' dark resistance, attack and release can reach about eleven and twelve minutes, varying from one LDR to another. An LED shines through a bare window in the panel.
Key features
- GATE, TRIG, ATT CV, DEC CV and REL CV in; OUT and INV OUT
- ATTACK, DECAY, SUSTAIN and RELEASE knobs, with ATT CV, DEC CV and REL CV attenuators
- A round window lit by an LED (drawn unlit)
- 10 HP; Nonlinearcircuits publishes no current draw, depth or assembled price (it sells the DIY PCB and panel), and ModularGrid lists none