Boss CS-2

Boss CS-2

CS-2 Compression Sustainer

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.

Boss Pocket Dictionary vol.2 (1985):
The CS-2 Compresssion Sustainer suppresses a higher volume input signal while emphasizing a lower volume input signal in order to create a sustain effect that holds a note for a long time. The CS-2 performs compression and expansion at high speeds, depending upon the input signal, which permits a faster response to any input and thus eliminates the volume reduction that normally occurs during the attack, as well as the weakening and instability of the sound. This, in turn, improves the sustaining effect of the sound. In addition, the wider range of control of the attack time allows each note to be fully and clearly produced, even with fast moving phrases. On the other hand, long and attractive tones can be created for slow-moving phrases. The CS-2 also features an input impedance of 1 MOhm which allows users to take full advantage of their guitar's unique characteristics.

Using the CS-2:

* With its wide, adjustable attack time range, the CS-2 can add a driving effect to a fast-moving phrase, or create a flowing melody line using the unit's sustain characteristics for slow-moving phrases.
* The wide sustain control range allows the CS-2 to also be used as a limiter, and is thus an essential effect pedal for rhythm and bass guitars.
* Usually, when a series of effect pedals are connected, the CS-2 should be connected first. However, when using the CS-2 as a limiter, it should be connected last in the series.
* Fig. 1 shows the setting used to produce sustain effects when the CS-2 is used as a limiter. (Fig. 1: Level 4, Attack 5, Sustain 2)
* Fig.2 shows the setting used when the CS-2 is used as a compressor. Turning the Sustain control too high may cause noise or howling. (Fig. 2: Level 4, Attack 5, Sustain 6)
* By adding a compressor, a sophisticated sound can be created. This sound can be further enhanced by adding a chorus effect pedal.


* 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


* Black - Made In Japan

The CS-2 was sold from December 1981 to June 1986.

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License