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Boss SY-1 Synthesizer Guitar Effects Pedal

Boss SY-1 Synthesizer Guitar Effects Pedal, 121 Total Sounds, Tone/Rate/Depth Controls, Hold Function, Parallel Send/Return Loop, Mode Switch Optimizes for Guitar or Bass


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MSRP: Old Price $299.99 Discounted Price $199.99 Save : $100.00 (33%)
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MSRP: Old Price $299.99 Discounted Price $199.99 Save : $100.00 (33%)
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With the SY-1, it's never been easier to infuse your creative arsenal with Boss's legendary guitar synth technology. This amazingly expressive tool is filled with 121 ultra-responsive sounds, all distilled down into a Boss compact pedal that slides easily into any setup. Best of all, it's as simple to use as a standard stompbox, so you don't need any background in synth programming to bring a new world of sonic textures to your music.

Expressive Synth Sounds, No Programming Needed
The SY-1 transforms any guitar or bass into a versatile synthesizer that's fun, inspiring, and ready to play. Backed by advanced tech first developed for the SY-300, this super-cool pedal delivers a huge selection of analog-style synth sounds while occupying minimal space on your board. What's more, all the sounds are polyphonic, allowing you to play both single notes and chords.

Plug-and-Play and Latency-Free
The SY-1 can be used with any guitar or bass via a standard 1/4" cable, providing an easy, plug-and-play experience. Thanks to custom DSP and the latest Boss innovations, the SY-1 offers latency-free performance that's a natural extension of your instrument, letting you to play freely and organically without altering your normal technique in any way.

A Universe of Synth Sounds Inside
With its 11 categories and 121 total sounds, the SY-1 puts an enormous array of synth colors at your fingertips. Expressive leads, sweeping pads, layered organs, fat basses, and more are all on tap, plus a variety of rhythmic synth patterns that are a blast to jam with. And with the grab-and-go Tone/Rate and Depth knobs, you're able to adjust any synth voice just how you like, including changing the pitch on some sounds.  

At Home in Any Rig
As a standard Boss compact, the SY-1 drops into a serial pedal chain like any other stomp. But with the send/return loop and dedicated mix controls, it's also possible to blend one or more pedals in parallel with the SY-1's synth voices. For example, you can patch drive pedals in the loop, and then send the combined output to mod, delay, and reverb pedals for overall processing. The send can be used as a direct out as well, enabling you to route synth and guitar sounds to separate destinations.  

Enhance Performances with Real-Time Control
The SY-1 offers a numbers of ways to make your synth performances even more dynamic and expressive. Pressing and holding the pedal switch sustains the last-played synth sound, allowing you to jam with regular guitar over the top. You can also connect an external footswitch for tap tempo and octave-shift effects, or plug in an expression pedal for continuous Tone/Rate control.    

SY-1 Sound Types
LEAD 1/2—A wide range of sounds suitable for single-note soloing.

PAD—Full tones that work great with chords, from layered pads to synth brass and more.

BASS—Fat synth bass sounds, including filtered and sub-octave tones.

STR—Classic analog-style strings, including layered voices and sweeping textures.

ORGAN—A large selection of organ sounds, including many with rotary-style modulation.

BELL—Percussive synth sounds with metallic resonance.

SFX 1/2—A variety of synth sound effects, including explosive one-shot sounds, animated pitch/filter voices, and more.

SEQ 1/2—Pulsating sounds with rhythmic pitch or filter changes.


  • Authentic Boss Polyphonic Guitar Synth in a Compact Pedal
  • 121 Total Sounds (11 Types and 11 Variations), No Programming Needed
  • Hold Function for Playing Normal Guitar Over Sustained Synth Voices
  • Blend Synth and Normal Guitar Sounds with Independent Level Controls
  • Parallel Send/Return Loop for Easy Integration with Other Pedals on Your Board
  • Mode Switch Optimizes the Synth Engine for Guitar or Bass
  • Supports Extended Control with an External Footswitch or Expression Pedal

Get your Boss SY-1 Synthesizer Guitar Effects Pedal today at the guaranteed lowest price from Sam Ash with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Guitar Effects Pedal



THIS THING IS INSANE. Its almost cheating how crazy good this pedal is. This pedal can do it all, and is especially good if you dont know how to play the keyboard. it makes your Guitar a Keytar, theres really no limit to the amount of ideas this pedal can give you. my personal favorite is Organ - 4.



Amazing Pedal


This is just an incredible pedal. Boss is best. The pedal sounds just amazing, has great routing options and tracks like it's on rails. If you are considering this, just go ahead and get it. It will change your rig forever.



I would definitely by again.


Excellent sounds from one pedal. I use it on a fender jazz bass, gives me a lead instrument power.



Lotsa great sounds in a sturdy compact pedal


Lotsa great sounds in a sturdy compact pedal. Very helpful sales person. I appreciate the veteran's discount, thank you!



A Fantastic Peadal at a Great Price Point


This is a fantastic pedal for creating strings and pads for my backing loops. These synth pedals always suffer from way too much of every sound ever, so you wind up using just 1 or 2 out of a 1000 sounds. But having all that capability in a small format pedal at a resonable price point makes this pedal a must have for every guitarist.



Great pedal. Try it out!


So, I went in the store to buy a different pedal (EHX mono synth, CP or other) but tried this out because of its size and preference for the "BOSS" style switch. I love it. The sax, flute, violin sounds are a little buried and take some tweaking but the "synth" stuff is outstanding! The controls are super intuitive. I do recommend a switch (5U style) for timing the arpeggios, etc. Try it out. You'll be pleased.



1 for Sam Ash


the product is good but this review compliments Sam Ash ,who is the only one of 3 top stores that delivered on this product . I've still not heard from sweet water or musicians friend but Sam Ash delivered on this new to the public pedal . way before the others , thanks Nick



SY-1 Synthesizer Guitar Effects Pedal

5.0 7


Inputs 1 x 1/4" Input, 1 x 1/4" Return
Outputs 1 x 1/4" Output, 1 x 1/4" Send, 1 x 1/4" EXP/CTL
True Bypass No
Control Layout Effect Knob, Direct Knob, Tone/Rate Knob, Depth Knob, Variation Knob, Type Knob, On/Off Footswitch
Battery Power Yes
Battery Type 9V
Power Supply Type 9V Battery (Included) or AC Adaptor (Not Included)
Power Supply Included Yes
Weight 1 lbs.
Dimensions 2-7/8 x 2-3/8 x 5-1/8 inches (WxHxD)
Model SY-1 Synthesizer
Warranty Info:

Effects pedals: 5 years parts, 3 years labor All other products: 1 year parts, 90 days labor

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