Mad Professor Forest Green Compressor Fact.

Extremely low noise optical compressor with two very useful modes. The sustainer modes preserves a lot of attack at a fairly mild compressor ratio and gives a lot of sustain. Great in front of a drive pedal for giving the feeling of sustain from a cranked amp without all the volume. The compressor mode gives more compression with some character without being too much like a vintage Ross or Dynacomp.

Well made and compact. Runs on standard 9v Boss style barrel jacket and doesn't draw much current. Came with a )v battery installed. Only complaint is the positioning of the power jack right by the input means the power lead can get in the way of the input jack or vice versa.