MINT Condition with all the Box Candy! (no power supply)

A fully controllable envelope filter with unique decay control, highly accurate and very fast tracking.This crafty circuit enables incredibly responsive envelope performance, even during rapid fire playing. There are four function knobs:

Res Knob：Control the filter sharpness.

Sens Knob：Controls the sensitivity.

Decay Knob：Control the filter frequency falls back to the resting point.

Range Knob：Adjust the filter frequency range.

Input & Output Jack：Analogy though 1/4’’ mono audio jack.

LED Light：LED indicator shows the working state.

Full metal shell：Aluminum-alloy classic, stable and strong.

True Bypass：Truebypass for zero tone coloration.