235L Discrete Noise Gate Channel Strips and others come to mind

and others come to mind

is similar to the old 160VU

AtoD and DtoA

It certainly has earned its title as the ´grandaddy´ of all compressors

that was illuminating the photo resistor

235L Discrete Noise Gate Channel Strips and others come to mind235L Discrete Noise Gate Features Threshold control from 45 to +25 dBu Variable Fine Adjustable Depth to 80 dB Adjustable Release Hold Time, 50mS to 3 sec 2: 1 Expander or Noise Gate Selection Release or Hold Switch for Release control knob Always at Unity Gain, Regardless of settings LED Gain Reduction Meter Uses the API 2510 and API 2520 Op Amps Transformer Output, to +28 dBu The API 235L Noise Gate Expander has the ability to reduce noise in any