Boss CS-3 Compression Sustainer Instruction Manual and Product Specification

The BOSS CS-3 is a compression sustainer that produces long sustain without distorting the original sounds. The attack volume adjusts picking forth widely and provides any drive-sound. As having the tone control function, the CS-3 allows wider variation of sound creation. Moreover, featuring the wide range of maximum input level and compression range, it can be used for any electronic musical instrument. In addition, the CS-3 can be used as an ordinary limiter by turning down the sustain volume.

For the guitarist or bassist who wants to learn more about this pedal, please read the Boss CS-3 Compression Sustainer Instruction Manual provided. In this manual, you will find information related to the panel description, the connection with electric guitar or amplifier or AC Adaptor (PSA-Series) or OUT DC 9V / 200 mA, how to operate the BOSS CS-3, Setting Memo, and specification. Before using this unit, BOSS as themanufacturer encourage you to read Boss CS-3 Compression Sustainer Instruction Manual carefully.

Boss CS-3 Compression Sustainer Product Specification

Nominal Input Level

-20 dBu

Input Impedance

1 M ohms

Nominal Output Level

-20 dBu

Output Impedance

1 k ohms

Equivalent Input Noise Level

-110 dBu (IHF-A Weighted, Typ.)


INPUT Jack, OUTPUT Jack, AC Adaptor Jack (DC 9 V)

Power Supply

DC 9 V: Dry Battery 9 V type (6F22/9 V), AC Adaptor

Current Draw

11 mA (DC 9 V)


Dry Battery 9 V type (6F22/9 V)


AC Adaptor (PSA-Series)

Size and Weight ( incl. battery )


73 mm
2-7/8 inches


129 mm
5-1/8 inches


59 mm
2-3/8 inches

0.4 kg
0 lbs. 15 oz.

* 0 dBu = 0.775 Vrms
*The specifications are subject to change without notice.

If you are looking for Boss CS-3 Compression Sustainer Instruction Manual, please download it from their official website that the link is below.

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