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Boss SL20
Slicer Guitar Audio Processor Pedal


Inject a shot of high-octane fuel into your music with the Boss SL-20 Slicer. Instantly transform a guitar, bass, keyboard, or vocal into a pulsating groove instrument.
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Boss SL20
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Inject a shot of high-octane fuel into your music with the Boss SL-20 Slicer. Instantly transform a guitar, bass, keyboard, or vocal into a pulsating groove instrument. Choose from 50 onboard Slice patterns or experiment with the SL-20's innovative Harmonic Slicer feature, which generates percussive melodies, Loop Record, and unique 3D Panning.

  • Groove and Melody Maker
    The SL-20 transforms your music into percussive "chopped" grooves. Fifty rhythmic patterns are onboard, with adjustable note attack and duration, plus amazing Harmonic Slice effects. Create high-energy patterns on stage in real-time, or use the SL-20 as a songwriting and recording tool. Play the sliced sounds in realtime while capturing them with Loop Record.
  • Flexible Control
    An internal tap-tempo feature is included, as well as the ability to sync to external MIDI clock. Sound characteristics of the SL-20 such as attack, duration, effect level, and direct level can be controlled by the onboard knobs or from an external Expression pedal.
  • Universal FX
    The SL-20 is an addictive effect that inspires creativity. It's great for guitarists, but it's equally useful for other instrumentalists as well. Plug in a bass, keyboard, iPod, or any other instrument or music-playback device. DJs and dance-music artists will also love the SL-20 as a rhythmic-performance tool.

Boss SL20 Features:

  • Instant groove and percussive-melody generator
  • 50 Slice patterns onboard, with adjustable attack and duration, including Harmonic Slice
  • Tap Tempo via onboard pedal switch; internal and MIDI sync
  • Sound characteristics such as attack, duration,effectlevel, and direct level are controllable via external Expression pedal (sold separately)
  • Variety of output modes, including the unique 3D Panning for spacious sliced FX

Boss SL20 Specifications:

  • 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
  • Tempo: 30 to 250 bpm
  • Maximum Recording Time: 40 seconds
  • Controls: START/STOP pedal, TAP pedal, EFFECT LEVEL knob, DIRECT LEVEL knob, BANK knob, PATTERN knob, ATTACK knob, DUTY knob, TEMPO knob, OUTPUT MODE button, PEDAL MODE button
  • Indicators: POWER indicator (serves also as the battery check indicator), START/STOP indicator, REC indicator, PLAY indicator, TAP indicator, MONO indicator, FIXED indicator, RANDOM indicator, PING-PONG indicator, AUTO indicator, 3D PANNER indicator, 3D CROSS indicator, LATCH indicator, MOMENTARY indicator, TEMPO indicator
  • Connectors: INPUT jacks R/MONO, L (1/4" phone type), OUTPUT jacks R/MONO, L (1/4" phone type), EXP PEDAL jack (1/4" TRS phonetype), MIDI IN connector, DC IN jack (DC 9 V)
  • Power Supply: DC 9 V, Dry battery LR6/R6 (AA) type x6/AC Adaptor (*Expected battery life under continuous use: 7 hours (Carbon), 18 hours (Alkaline). These figures will vary depending on the actual conditions of use.)
  • Current Draw: 110 mA
  • Accessories: Owner's Manual, Leaflets ("USING THEUNIT SAFELY", "IMPORTANT NOTES", and "Information"), Dry battery (R6 [AA] type[carbon] x 6) (*The battery that was supplied with the unit is for temporary use-intended primarily for testing its operation. We also suggest replacing this with an alkaline dry cell.)
  • Options: AC adaptor (PSA-series), Expression pedal (Roland EV-5)
  • Dimensions (WxDxH): 6 13/16" x 6 1/4" x 2 1/4"
  • Weight: 2 lbs 7 oz

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