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Boss CS-3 Product Overview by GAK

The CS-3 is a compression sustainer from Boss' that sustains your guitar volume to provide total clarity and control of your sound.

You can choose from a range of effects from gentle compression to completely squashing your sounds to the max.

The CS-3 works best when paired with chorus and delay pedals in your setup.

Boss Product Overview

With the BOSS CS-3 Compression Sustainer you can compress high-input signals and boost low-input signals. By compressing and boosting the signal the CS-3 gives you consistent sustain for total clarity and control of your sound.

As a sustainer it works perfectly for gentle, nuanced playing that you want to remain tasteful but cut through the mix. If you're strumming chords then the compression works great for a full-sounding accompaniment.

The BOSS CS-3 pairs well with chorus and delay pedals, this pedal can add to and actually improve your existing setup.

*Boss PSA series power adaptor sold separately. You can purchase by clicking here.

  • 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
  • - ATTACK 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)
  • - Alkaline battery (9V, 6LR61)
  • - AC adaptor (PSA series: sold separately)
  • Current Draw:
  • - 11 mA
  • Expected battery life under continuous use:
  • - Carbon: Approx. 14.5 hours
  • - Alkaline: Approx. 34.5 hours
  • *These figures will vary depending on the actual conditions of use.
  • Accessories:
  • - Owner's manual
  • - Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information")
  • - Dry battery/9 V type (6F22)
  • Options (sold separately):
  • - AC adaptor: PSA series
  • - Width 73mm, 2-7/8 inches
  • - Depth 129mm, 5-1/8 inches
  • - Height 59mm, 2-3/8 inches
  • - Weight 390g, 14oz
  • * 0 dBu = 0.775 Vrms
  • * The specifications are subject to change without notice.



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Customer reviews

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    Does what it says on the tin. Very good.



    Quality product, competitive price, prompt delivery. 1st class as always.

  • Bob Cullen


    Doesn't make a lot of difference, but I'm assured it's worth it. I haven't tried it at volume yet until I get gigging again.

  • Bob


    Excellent product

  • Ravi B


    Excellent pedal, nothing more to say... top notch!

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