This is an envelope generator based on the SMD AS3310.The AS3310 is a modern recreation of the classic Curtis CEM3310 chip, used in many famous mono and poly analogue synth from the eighties.We took the best ideas from all the classic 3310 circuits and tried to squeeze the maximum from this fantastic chip.The MODE switch takes this module beyond a simple ADSR type envelope generator.It can work as:- NORMAL - a conventional ADSR envelope,- DAMPED - an ADRR piano envelope approximation- AUTO - a short gate will cycle the envelope shaper through a complete ADR envelopeIt has an additional TRIGGER input which can be used for generating multiple peak envelopes. Attack Time 2.5ms-1.5sDecay Time 6ms-4sSustain Level 0-10VRelease Time 6ms-4s Dimensions 6 HP 35 mm deep Current Draw 55 mA +12V 16 mA -12V 0 mA 5V