Doepfer - A-141: VCADSR (USED)
USED in very good condition.
The shape of the envelope is governed by four parameters: Attack, Decay, Sustain and Release. On the A-141, these parameters can be controlled by hand, or by voltage control, via the dedicated CV inputs (each with an attenuator).
The A-141 VCADSR also has a retrigger facility: while the gate is open, a trigger pulse received at the retrigger socket will re-start the envelope from the beginning of its attack phase.
The time range for A, D and R is about 3 ms ... 20 s. The module can be modified upon request (changing a capacitor) for another time range, e.g. 300us... 2s.