Erica Synths Black Envelope Generator is a compact, fully analogue envelope generator with some cool bonus features like gated loop and gate delay for nice acid basslines and veeeerrryyy slow drones.

• Full ADSR envelope
• Short/Long envelope switch
• Direct and inverted envelope outputs
• Gated and independent looping modes
• Gate delay (after Attack stage) output
• Skiff-friendly design

This used unit is in very good condition and comes in the original box.