ADSR4HP Envelope Generator with three Length Modes  ADSR is a classic Envelope Generator creating an envelope with an Attack, Decay, Sustain and Release stage. It can be triggered with a Gate signal and will output the envelope with a range of 0V to +8V on the regular output jack and 0V to -8V on the inverted output jack.  The envelope may be re-triggered using the RTRG input as long as the Gate on the Gate Input is high.  ADSR has three different Length Modes from Slow over Moderate to Fast. The envelope can be very short (20uS) up to very long (110s) making it a useful tool for percussion like sounds and evolving soundscapes. The Moderate Mode is the best option for regular synth sounds.  The LED between the A (Attack) and D (Decay) potentiometer indicates the current state of the envelope. Details: •	ADSR Envelope Generator •	Regular and Inverted Output •	Re-Trigger Input •	Three Length Modes •	Snappy from 20 micro seconds until evolving to 110 seconds •	Skiff friendly •	Wrong polarity protection •	3U Eurorack module, 4 HP wide •	Power consumption: 25 mA at +12 V and 25 mA at -12 V The module consists of two boards: •	    Front PCB Panel •	    Main PCB