Boss CS-2 Compression Sustainer
The Boss CS-2 Compression Sustainer was the follow up compressor to the CS-1. The CS-2 is a modern favourite due to the smooth sustain and lack of tone colouration. The CS-2 is one of the most used vintage Boss pedals in modern guitar rigs and it's tone and functionality has withstood the test of time.
Unlike the CS-1 (which used photocouplers), the CS-2 uses VCA (Voltage Controlled Amplifier) technology to speed up the signal processing, allowing for a faster attack time and is more responsive to the playing dynamics.
The Level knob controls the volume of the signal, the Attack knob increases the speed of the playing attack time and the Sustain knob controls the level of compression on the signal.
Produced from December 1981 until June 1986.
The earliest models actually used the same label as the CS-1 and although there are no silver screw CS-2's, some have the "Use a Coin" label on the bottom.