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Boss CS3 Compressor Effects Pedal

Boss CS3 Compressor Effects Pedal
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Compression Sustainer



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.

  • Compact compression/sustainer pedal with high-quality circuitry
  • Compresses loud signals and boosts softer signals for a smooth overall sound
  • Onboard Level, Tone, Attack and Sustain controls for precise tonal shaping
  • Low-noise design for super-quiet operation
  • BOSS five-year warranty


Nominal Input Level - -20 dBu
Input Impedance - 1 M ohm
Nominal Output Level - -20 dBu
Output Impedance - 1 k ohm
Recommended Load Impedance - 10 k ohms or greater
Bypass - Buffered bypass
Controls - SUSTAIN knob
TONE knob
LEVEL knob
Pedal switch Indicator - CHECK indicator (Serves also as battery check indicator)
Connectors - INPUT jack: 1/4-inch phone type
OUTPUT jack: 1/4-inch phone type
DC IN jack
Power Supply - Carbon-zinc battery (9V, 6F22) or Alkaline battery (9V, 6LR61)
AC adaptor (PSA series: sold separately)
Current Draw - 20 mA
Expected battery life under continuous use - Carbon: Approx. 10.5 hours
Alkaline: Approx. 26 hours
*These figures will vary depending on the actual conditions of use.
Accessories - Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information")
Dry battery/9 V type (6F22)
Options (sold separately) - AC adaptor: PSA series
Size and Weight
Width - 73 mm
2-7/8 inches
Depth - 129 mm
5-1/8 inches
Height - 59 mm
2-3/8 inches
Weight - 380 g
14 oz
* 0 dBu = 0.775 Vrms