¡Obtenga asesoría en español!  Llámenos hoy a (800) 222-4701
(800) 222-4700 Talk to an expert!
Press Space or Down Arrow to open the quick shopping cart menu. Press Escape to close the menu and return to the Shopping Cart link.
Loading Cart
Your Cart Is Empty

See what's new at Sweetwater.

My Cart this.cartQty

Boss SL-2 Slicer Audio Pattern Processor Pedal , $161.50 - Add to Cart Skip to Product Information

Boss SL-2 Slicer Audio Pattern Processor Pedal

Audio Pattern Processor Pedal with 11 Patterns, 5 Slicer Variations, Stereo I/O, Expression/Control Input, MIDI control, and Tap Tempo
Boss SL-2 Slicer Audio Pattern Processor Pedal
Boss SL-2 Slicer Audio Pattern Processor Pedal

In Stock!

Ask An Expert Our Expertly trained Sales Engineers are ready to help! What is a Sales Engineer?
Sweetwater Gear Exchange

Have one to sell?
Check out Sweetwater's Gear Exchange!
Learn More

Boss SL-2 Slicer Audio Pattern Processor Pedal
In Stock!

Transcending Tremolo for the 21st Century

This article was Written By

Our Product Research Team

Get to know them!

BOSS calls the SL-2 Slicer an “Audio Pattern Processor” pedal, but the truth is that this little box simply defies categorization! The SL-2 packs the power of BOSS’ original SL-20 pedal into a much more pedalboard-friendly form factor, allowing you to chop, screw, and twist your signal into complex rhythms and percussive grooves. There are 11 distinctive rhythms at your disposal, and the tempo can be set either by the control knob or by activating the hands-free tap tempo feature. What’s more, the Type knob provides five different flavors of slice — single, dual, tremolo, harmonic, and SFX — that are a cut above traditional tremolo tones! Finally, the SL-2 is packed full of high-end features, including MIDI in, expression/control in, stereo I/O, and a dedicated BOSS app to access even more pattern possibilities.

Five different ways to slice it

What is slice, anyway? The closest equivalent in the pedal world would be tremolo, but tremolo sounds positively quaint compared to the SL-2’s wild rhythmic gating. Still, the SL-2 Slicer covers those classic choppy tones, but its five different slice options can also transform your signal into an IDM groove or even synth-like sounds.

  • Single and Dual: These modes are relatively self explanatory. Single has one slicer; Dual has two slicers operating at the same time.
  • Tremolo: The SL-2’s tamest setting, this mode is about as close to traditional tremolo as the SL-2 can get!
  • Harmonic: This mode brings in wild modulation, adding even more complexity to your rhythmic experimentation.
  • SFX: Perhaps the most peculiar mode, SFX introduces additional effects to your signal depending on which sub-mode you choose.

Big-box features in a standard BOSS form factor

Many of Sweetwater’s more experimental guitarists fondly remember the SL-20 as a modern classic, but there was one catch: it was huge. The SL-2 saws down the size by almost half without compromising functionality, and it even introduces several new features to the Slicer series! Looking for enhanced control? A MIDI in allows for timing clocks, start/continue/stop messages, and control change messages for external MIDI-compatible devices. Need to adjust your tempo or controls on the fly? Pop in an expression pedal or a remote control switch, or simply activate the SL-2’s built-in tap tempo. Last but not least, the USB input enables easy connection to the BOSS Tone Studio for SL-2 app to access a wide library of downloadable slice patterns.

BOSS SL-2 Slicer Audio Pattern Processor Pedal Features:

  • Chops and slices up your signal into 11 variations of percussive groove
  • Balance and attack controls to set your mix level and the effect’s sharpness
  • Duty control to modify the length of the slice pattern’s sound
  • Tempo can be adjusted by either knob control or by accessing the built-in tap tempo function
  • Type knob switches between single, dual, tremolo, harmonic, and SFX slicer types
  • MIDI in offers greatly enhanced control possibilities
  • USB port allows for even more slice patterns via the dedicated BOSS Tone Studio for SL-2 app
  • External footswitch jack for remote control of tap tempo and other momentary functions
  • Stereo I/O for wild ping-pong slicer sounds

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.