Doepfer A-141-4 Quad Poly VCADSR is an envelope module for modular synthesizers in Eurorack format. The fourfold, voltage-controlled envelope generator is primarily intended for polyphonic applications. The module has common manual controls and control voltage inputs for the parameters Attack (A), Decay (D), Sustain (S) and Release (R). In addition, each envelope generator has a gate input, an envelope output and a control LED.

Doepfer A-141-4 at a glance:

• Envelope module for Eurorack synthesizer
• Quadruple, voltage controlled envelope generator
• For polyphonic applications
• Has common manual controls
• Attack/Decay/Release times are between 1ms and 30s