This is an audio compressor/AGC (automatic gain control) with an astonishing 75db input voltage range. A P-Channel JFET is used as a variable resistance element that is applied as a variable ...

Jackson Audio has unveiled the Hour Glass, a tricked-out compressor pedal that was inspired by classic OTA analogue units from Ross, but doubles up on the circuits for added flexibility – and, quite ...

Threshold determines at what volume level the compression circuit becomes active and ultimately controls the gain reduction applied to the audio signal. The threshold is one of the most important ...