Check the listing for details. Boss Compression Sustainer CS-2 Guitar Pedal. Condition: Used. Listed at 190.00 USD. Boss Compression Sustainer CS-2 Guitar Pedal. Condition is "Used". Good working condition The CS-2 compresses high-input signals while boosting low-input signals, giving you smooth and long sustain without degrading the quality of the original sound. The CS-2 uses a VCA (Voltage Controlled Amplifier) instead of the photocouplers used by the CS-1. The VCA’s speeds up the signal processing and makes the attack much faster compared to the CS-1. The Attack knob can however be used to control this. Specifications Controls: Level, Attack, Sustain Connectors: Input, Output, AC Adaptor Current Draw: 4 mA (DC 9V) Weight: 400g (15 oz.) Input Impedance: 1MOhm Recommended AC Adaptor: ACA Series Labels Black – Made In Japan The CS-2 was sold from December 1981 to June 1986.