A-135-4C VC Performance Mixer Quad Envelope Follower

The envelope follower module of Doepfer's voltage controlled performance mixer, in 8 HP: four envelope followers with their own attack and release, made to follow the A-135-4A's four inputs and steer its levels, panning or aux sends through the A-135-4B, for ducking, compressing or expanding.

Key features

• Four envelope followers, each with Attack and Release, from about 0.01 to 0.5 s
• Four inputs, normalled to the A-135-4A's inputs by an internal cable (direct, post gain or post VCA); a cable in an input breaks the link, and the module works on its own
• Four envelope outputs, about half the input's peak to peak level, each shown by a lamp
• Also a simple attack / release generator from gates