compressor

1. output level
2. attack/speed control
3. compression level
4. signal input
5. sidechain input (works only in sidechain mode)
6. sidechain mode switch
7. signal output
8. envelope follower output (unbuffered)
9. slow/fast release mode switch

How it works

The compressor reduces the dynamic range of the input signal. The compression level [3] knob controls both threshold and ratio simultaneously — turning it up increases the amount of compression applied.

The attack [2] knob adjusts how quickly the compressor responds to transients. The release mode [9] button toggles between fast and slow release times. The output level [1] knob allows you to compensate for gain reduction.

Sidechain mode

When the sidechain button [6] is pressed, the compressor enters sidechain mode. In this mode, the compression envelope is derived from a separate signal fed into the sidechain input [5] instead of the main input [4]. This allows the compressor to be triggered by an external source (e.g., ducking a synth pad with a kick drum).

todo add image for two modes with main inpuit and sidechain input

Envelope output

The envelope follower output [8] provides the detected envelope signal, which can be used to control other modules.

Power consumption

300 mW