Compression Sustainer

Where to Buy

Improves Your Overall Tone

The CS-3 Compression Sustainer pedal compresses louder signals while boosting lower signals, providing smooth sustain without degrading the original sound quality. This is the perfect pedal for guitarists and bassists who want to sound their best.

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
400 g
0 lbs. 15 oz.
* 0 dBu = 0.775 Vrms
*The specifications are subject to change without notice.


If you have questions about operating your BOSS product, please check our Knowledge Base for answers to the most common questions.
You can also contact our Product Support department by phone or email.
In addition, we have a library of Owner’s Manuals and Support Documents that you can download and reference.

Owner’s Manuals

Support Documents