The Serge Dual Extended ADSR (ADSR) contains two complex envelope generators. Each ADSR uses not only the four segment envelope normally encountered in synthesizers, but is designed with extra features such as an initial voltage controllable delay time, voltage control of each segment, switchable slope forms, and a master voltage control. Each segment may be manually set and voltage controlled. In addition to the normal Attach, Decay, Sustain, and Release segments, an Initial Delay time is included. A master 1V/OCT inout allows to control all slope times for effects such as decreasing the entire envelope time as the pitch of an associated oscillator increases - a phenomenon is typical of many acoustic instruments. Some details of the Random*Source ExtADSR module: Classic Serge Circuit CV-response can be set from "classic" (5V = 5 octaves) up to 10 octaves for more drastic effects. 4x4 format (4U high - this is not Eurorack!)