The VC Dual ADSR 47B packs the maximum envelope control into a single space module. Each ADSR is completely independent.

The CV input for each envelope provides global control over time duration of the ADR stages. A positive control voltage shortens the duration, negative CV lengthens the time duration. This feature adds considerably to the expressive control of static envelopes.
An example use of global CV: Track a keyboard so that pitch and envelope duration are proportional.

Another unique feature of the 47B is the ability to switch between linear,logarithmic or extra long release envelope curves.

Can also be used as a dual 0 to +5V reference voltage generator when gate signal is removed.

Features per Envelope:

Global CV control of ADR time duration and Sustain level
Switch selectable Linear/Log/Long Release curves
Reference voltage source set by Sustain knob or CV
Envelope status LED
Wide range envelope duration 1:18000 ratio
Snappy attack

Specifications:

Stage	Min Dur.	Max Dur.
Attack	1.7ms	19.24 sec
Decay	1.4ms	16.97 sec.
Sustain	0 Volts	5 volts
Release	1.2ms	51.0 sec.

Input Gate 3-10V
Inputs: 50k ohms
Outputs: 1k ohms
Envelope Output: 0-5 V
CV control sens: +/-5V

Current Requirements:
+50mA at +15V
-30mA at -15V