Boss SY-300 Guitar Synthesizer

Grab Your Axe and Dive into an Extraordinary World of Sound Creation with the SY-300 Guitar Synthesizer

The SY-300 can be used with all your guitars right away, with no special pickup required—just plug into the standard 1/4-inch jack and play! Thanks to revolutionary new BOSS technology, you’re able to explore fat, analog-style polyphonic synth sounds with zero latency, seamlessly extending the natural expressiveness and familiar feel of your own instrument. In addition, you can shape your normal guitar with the synth’s filters, amps, and LFOs to create all sorts of cool sounds never heard before. From unique lead textures to rich, evocative soundscapes, the SY-300 brings untapped dimensions of inspiration and creativity to your music.

• Plug into the standard 1/4-inch jack and play rich and expressive polyphonic synth tones with any guitar
• Completely latency-free playing feel directly connects your hands with the sound
• Three simultaneous synth sections and four effects processors enable rich, dynamic, and diverse sound creation
• Shape your normal guitar tone with synth filters, amplifiers, and LFOs to create all-new sounds
• Graphic LCD display, three assignable footswitches, and dedicated on/off footswitch
• 70 ready-to-play preset patches and 99 user patches for storing custom sounds
• Create and archive sounds on your computer with the BOSS Tone Studio editor/librarian and download new sounds at BOSS Tone Central
• Download and share Livesets at BOSS Tone Exchange
• Works with bass and other electronic instruments as well

SPECFICATIONS

• DA Conversion: 24 bits
• AD Conversion: 24 bits + AF method
• Sampling Rate: 44.1 kHz
• Patch Memories: 99x user / 70x preset
• LCD: Graphic LCD (132 x 64 dots, backlit LCD )
• Power Supply: AC adaptor
• Current Draw: 400 mA

Nominal Input Level

• INPUT: -10 dBu
• RETURN: -10 dBu

Input Impedance

• INPUT: 2.2 M ohms
• RETURN: 220 k ohms

Nominal Output Level

• MAIN OUTPUT: -10 dBu
• SUB OUTPUT: -10 dBu

Output Impedance

• MAIN OUTPUT: 2 k ohms
• SUB OUTPUT: 2 k ohms

Recommended Load Impedance

• MAIN OUTPUT L/R: 20 k ohms or greater
• SUB OUTPUT L/R: 20 k ohms or greater
• PHONES: 16 ohms or greater

Oscillators

• SIN
• SAW
• PWM
• DETUNE SAW
• NOISE
• INPUT

Effects

• TOUCH WAH
• COMPRESSOR
• LIMITER
• OD/DS
• EQ
• SLOW GEAR
• DELAY
• CHORUS
• REVERB
• PHASER
• FLANGER
• TREMOLO
• ROTARY
• UNI-V
• PAN
• SLICER
• ISOLATOR
• LO-FI
• DELAY+REVERB
• CHORUS+DELAY
• CHORUS+REVERB

Connectors

• NPUT jack: 1/4-inch phone type
• THRU jack: 1/4-inch phone type
• RETURN jack: 1/4-inch phone type
• MAIN OUTPUT R (MONO) jack: 1/4-inch phone type
• MAIN OUTPUT L (PHONES) jack: 1/4-inch phone type
• SUB OUTPUT R (MONO) jack: 1/4-inch phone type
• SUB OUTPUT L jack: 1/4-inch phone type
• MIDI (IN, OUT/THRU) connectors
• EXP/CTL4, 5 jack: 1/4-inch TRS phone type
• USB port: USB type B
• DC IN jack

Accessories

• AC adaptor
• Owner’s manual
• Leaflet “USING THE UNIT SAFELY”

Options(Sold Separately)

• Footswitch: FS-5U, FS-5L, FS-6, FS-7
• Expression pedal: Roland EV-5, BOSS FV-500L/500H

Manufacturer: Boss
Model: SY-300
SKU: I360124-N-0-WHXB
UPC: 761294507070

We are Chuck Levin’s Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.