Skip to content
  • Guitars
  • Amplifiers & Effects
  • Ukuleles
  • Pianos & Keyboards
  • Pro Audio
  • Drums & Percussion
  • Accessories
Login
  • YouTube
Search
Austin Bazaar
  • GuitarsGuitars
    • All Guitars

    • Acoustic Guitars

    • Acoustic-Electric Guitars

    • Bass Guitars

    • Classical Guitars

    • Electric Guitars

    • Kids Guitars

    • Left-Handed Guitars

  • Amplifiers & EffectsAmplifiers & Effects
    • All Amplifiers and Effects

    • Bass Amplifiers

    • Guitar Amplifiers

    • Guitar Pedals
      • Chorus Pedals

      • Compressor and Equalizer Pedals

      • Distortion, Overdrive and Fuzz Pedals

      • Flanger Pedals

      • Footswitch and Selector Pedals

      • Harmonizer Pedals

      • Looper Pedals

      • Multi-Effects Pedals

      • Pedal Tuners

      • Phaser Pedals

      • Reverb and Delay Pedals

      • Samplers and Drum Machines

      • Tremolo Pedals

      • Volume and Expression Pedals

      • Wah and Filter Pedals

  • UkulelesUkuleles
    • All Ukuleles

    • Soprano Ukuleles

    • Concert Ukuleles

    • Tenor Ukuleles

    • Baritone Ukuleles

    • Bass Ukuleles

  • Pianos & KeyboardsPianos & Keyboards
    • All Pianos and Keyboards

    • Digital Pianos

    • Keyboards

    • Sustain Pedals

    • Synthesizers and Workstations

    • Theremins

  • Pro AudioPro Audio
    • All Pro Audio

    • Audio Interfaces

    • DJ Equipment

    • DJ Lighting and Effects

    • Handheld and Field Recorders

    • Headphones

    • Microphones and Wireless
      • Condenser Microphones

      • Dynamic Microphones

      • Wireless Systems

    • Midi Controllers

    • Monitors

    • PA Systems

    • Samplers and Drum Machines

  • Drums & PercussionDrums & Percussion
    • All Drums and Percussion

    • Bongos

    • Cymbals

    • Drum Hardware, Stands and Pedals

    • Electronic Drum Kits

    • Glockenspiels and Xylophones

  • AccessoriesAccessories
    • All Accessories

    • Benches

    • Cables
      • DMX Cables

      • Instrument Cables

      • MIDI Cables

      • XLR Cables

    • Cases and Bags
      • Acoustic Guitars

      • Bass Guitars

      • Drums and Percussion

      • Electric Guitars

      • Microphones

      • Pianos and Keyboards

      • Pro Audio

      • Ukuleles

    • Capos

    • Drums and Percussion

    • Guitar Parts

    • Guitar Straps

    • Harmonicas

    • Instrument Stands
      • Band and Orchestral

      • Guitars

      • Microphones

      • Pianos and Keyboards

      • Speakers and Monitors

    • Music Stands

    • Metronomes

    • Picks

    • Pickups

    • Strings
      • Acoustic Guitar Strings

      • Ukulele Strings

    • Tuners

Search Login Cart 0
Cart

Your cart is currently empty.

Not sure where to start?
Try these collections:

  • Continue shopping
Spend $1,000.00 more to reach free shipping!
    Order special instructions
    Estimate shipping
    Discount
      Taxes and shipping calculated at checkout
      Subtotal
      $0.00 USD
      Recently viewed
      Search
      Home Search Shop 0 Cart
      Account
      Boss SY-300 Guitar Synthesizer
      Boss SY-300 Guitar Synthesizer
      Boss SY-300 Guitar Synthesizer

      Boss SY-300 Guitar Synthesizer

      $989.99
       
       

      You Might Also Like

      Bundle
      Boss SY-300 Guitar Synthesizer w/ Instrument Cable

      Boss SY-300 Guitar Synthesizer w/ Instrument Cable

      $989.99

      Share:

      • Share on Facebook
      • Share on X
      • Pin on Pinterest
      • Share on WhatsApp
      • Share by Email
      Share
      Share
      • Facebook Share on Facebook
      • X (Twitter) Share on X
      • Pinterest Pin on Pinterest
      • WhatsApp Share on WhatsApp
      • E-mail Share by Email
      Description
      EXPLORE NEW DIMENSIONS OF SOUND WITH ANY GUITAR
      Grab your favorite 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.Access Expressive New Sounds via a Standard 1/4-Inch Input

      With the SY-300, tapping into BOSS' legendary guitar synth technology has never been easier. While our other synth products require a special GK pickup and 13-pin cable to access synth voices, the SY-300 can be used with any guitar via a standard 1/4-inch cable. Powered by ultra-fast DSP and newly developed innovations from the BOSS engineering team, the SY-300 performs its amazing synth magic in real time, with no lag whatsoever. This delivers a latency-free playing experience that's a natural extension of your normal guitar, letting you to play freely and organically without altering your technique in any way.

      The SY-300 features a powerful polyphonic synthesis engine with three separate sections, bringing a limitless range of fresh tones to your arsenal. Just like a keyboard player with a classic analog synth, you have complete creative freedom to build sounds with a full palette of synthesis parameters -- select different wave shapes, tweak them with filter, amp, and pitch controls, modulate them with LFOs, and layer oscillators for rich, complex tones. There's even a step sequencer (with tap tempo control) for creating dynamic melodies and arpeggios simply by playing a single note on your guitar! And with the cool Blender function, you can instantly mix and match synth settings from other patches to discover inspiring new sounds with no heavy lifting at all.

      Beyond its amazing synth voices, the SY-300's synth engine can be used to process your normal guitar sound in many compelling ways. Apply filtering to alter the basic tonality, and use the amplifier parameters to alter the attack and decay characteristics. After that, add some sweeping movement to the sound with the LFO section. With these powerful controls, you're able to extend your regular axe with an endless supply of unique creative textures, from subtle to otherworldly.

      Effects play a huge role in synthesizer sound design, and the SY-300 is filled with options to take your tones into the stratosphere. Four simultaneous effects engines are available, each packing a number of effects types including overdrives and distortions, Slow Gear, Isolator, Slicer, and many others. Some types can even perform two effects at once, such as chorus and delay or delay and reverb. Use the effects to process synth sounds, your straight guitar sound, or both at once -- it's up to you.

      Controlling the SY-300 while performing is simple. Using the four built-in footswitches, you can bypass the synth sound, scroll through patches, and control three different parameters of your choosing per patch. Two external footswitches or an expression pedal can also be connected for even more real-time control if needed. The Thru output lets you to send your dry guitar sound directly to your pedals or amp, or it can be used along with the Return jack as an effects loop. Dual output pairs (Main and Sub) offer assignable signal routing options to integrate with any setup, while MIDI In and Out/Thru jacks are provided for interfacing with switchers, drum machines, and other MIDI gear.

      The SY-300 is equipped a USB audio interface to capture audio tracks directly into music production software on your computer. You can record the SY-300's synth and effects sounds, or just monitor them while recording a dry signal. Then, feed that signal back into the SY-300 to "re-synth" the sound and create the perfect tone for your mix. You can feed other tracks from your DAW into the SY-300 as well, processing them with the synth engine and effects to create cool new sounds for your productions. The SY-300's USB connection also allows you to build and organize patches with the dedicated BOSS Tone Studio editor and download new patches from the BOSS Tone Central website.

    • 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
    • Works with bass and other electronic instruments as well
    • Specifications

      Oscillators: Three OSCILLATOR (wave: SIN, SAW, TRI, SQR, PWM, DETUNE SAW, NOISE, INPUT)
      Effects: Effect (FX) x 4 Type: 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
      Patch Memories: User: 99Preset: 70
      AD Conversion: 24 bits + AF method * AF method (Adaptive Focus method): This is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD and DA converters.
      DA Conversion: 24 bits
      Sampling Rate: 44.1 kHz
      Nominal Input Level: INPUT: -10 dBu, RETURN: -10 dBuInput Impedance: INPUT: 2.2 M ohms, RETURN: 220 k ohms
      Nominal Output Level: MAIN OUTPUT: -10 dBu, SUB OUTPUT: -10 dBuOutput 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
      LCD: Graphic LCD (132 x 64 dots, backlit LCD )
      Connectors: INPUT 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
      Power Supply: AC adaptor
      Current Draw: 400 mA
      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

      Pairs well with

      0% Interest Payment Plan 0% Interest Payment Plan
      Fast & Free Shipping Fast & Free Shipping
      Free 12 Month Extended WarrantyFree 12 Month Extended Warranty
      45 Day return 45 Day return

      Have questions?
      Talk to a sales specialist!

      800-511-1322

      30-Day Return Policy

      Fast and free shipping

      Boss SY-300 Guitar Synthesizer

      Boss SY-300 Guitar Synthesizer

      $989.99

      Features

      Customer service

      Fast Free Shipping

      Assured Quality

      Secure payment

      Stay in the loop with our weekly newsletter

      Contact Us

      800-511-1322

      cs@austinbazaar.com

      • YouTube
      Categories
      • Guitars
      • Amplifiers and Effects
      • Ukuleles
      • Pianos and Keyboards
      • Drums and Percussion
      Quick Links
      • About Us
      • Contact Us
      • FAQs
      • Affirm Financing Terms
      Our Policies
      • Privacy Policy
      • Shipping Policy
      • Return Policy
      • Terms & Conditions
      © 2026 Austin Bazaar. 
      • Choosing a selection results in a full page refresh.
      • Opens in a new window.