Quad Envelope / Function Generator

quad functon / envelope generator
4 x function generators
3 modes:
1. ad (attack – decay)
2. asr (attack – sustain – release)
3. cycle (ad envelope loops)

each function can have a linear or exponential curve.
wide time range for attack/decay controls:

• 98 mA +12V
• 53 mA -12V
• ? mA 5V

No info about availability.