Dual DADSR Envelope generator includes delay

The GMS709A Dual DADSR Envelope Generator provides two DADSR (delay, attact, decay, sustain, release) envelope generators in one 1MU module. The delay, attack, decay and release times are variable over a range of 1 millisecond to 10 seconds. The delay adjustment places an adjustable amount of delay that occurs after the gate triggers a cycle and prior to the start of the attack portion of the waveform.

Panel controls select the mode of operation, normal (single cycle), gated (cycle self triggers and repeats while gate input is high), and loop (cycle retriggers itself at end). The shape of the envelope can be set to exponential or linear. The polarity of the output wave can be set to positive (above zero) or negative (below zero). There is also a manual gate trigger button on each channel. 


Technical Specifications

Envelope Generator Section

Attack, Decay, Release Range
1 millisecond to 10 seconds

Voltage Control Range
0-5V for 1 ms to 10 second range

Output Amplitude
0-5 Volts

Envelope Output
Both positive and negative envelope available simultaneously

Typical Input Impedance
100K Ohms

Typical Output Impedance
1K Ohms (short circuit protection)

Module Power
+15 Volts 45 mA.
-15 Volts 45 mA.

Module Size
Panel height - 8.75 inches (222 mm)
Panel width - 4.25 inches (108 mm)
Depth (behind panel) 2.1 inches (53 mm)



We produce electronic synthesizer modules in the two most popular formats, MU (Moog compatible 5U) and EU (Eurorack compatible 3U). A wide range of voltage controlled modules including oscillators, amplifiers, mixers, envelope generators, special effects units, wave generators, filters, power systems and cases allow users complete freedom to configure any desired electronic music instrument.


Grove Audio builds microphones, preamplifiers, equalizers, compressors and other professional audio equipment for performance and studio use. We build units in popular formats such as 19 inch rack mount and 500 series 3U modules. We can also produce custom designs on request. Contact us for a consultation.


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Grove Audio has been manufacturing professional recording and modularized electronics for musicians, performers, and engineers since 1995.