Boss SY-1000 Guitar Synthesizer Effects Pedal

The BOSS SY-1000 is a guitar and bass synthesizer pedal that is sure to open up a new world of possibilities within your guitar rig. Built on decades of player feedback from the most innovative BOSS and Roland guitar synth technology, the SY-1000 is truly a powerhouse.

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Boss SY-1000

The BOSS SY-1000 is a guitar and bass synthesizer pedal that is sure to open up a new world of possibilities within your guitar rig. Built on decades of player feedback from the most innovative BOSS and Roland guitar synth technology, the SY-1000 is truly a powerhouse synthesizer pedal.

Featuring three distinct synthesizer instrument engines that you can play simultaneously. Giving you some exceptionally deep, and rich sonic textures. Simply plug in your guitar or bass via 1/4″ cable, just as you would any other BOSS effects pedal. Alternatively, you can use Roland’s GK pickup technology for some of the most precise pitch tracking and per-string parameter tweaking. While custom DSP gives you six times the processing muscle of the SY-300.

On top of that, the SY-1000 boasts built-in effects looping, multi-effects, instrument modeling, external control inputs, and assignable footswitches. So you can maximize the SY-1000 to suit your style and get the most out of your workflow. You can choose from ten oscillator waveforms, including sine, triangle, PWM, three saw types (including Roland’s famous supersaw), and more. Then, shape your sound using six different filters, amplifier control, two LFOs, and two powerful step sequencers.

Above all, the BOSS SY-1000 is without a doubt the most advanced synthesizer guitar effects pedal we’ve seen to date!


  • BOSS’s most powerful guitar/bass synth and modeling processor ever
  • Next-generation synth engine with custom DSP and 48 kHz/32-bit processing throughout
  • Unprecedented sound and expression with three simultaneous instrument types and advanced real-time signal processing
  • Each instrument provides pitch, level, and panning of each string for instant alternate tunings and wide, layered voicings
  • New Dynamic Synth perfectly follows the guitar’s natural envelope for uncompromised tone shaping
  • New sound engine and GK 13-pin interface deliver clear, dynamic sound and precision tracking with zero latency
  • Dynamic Synth includes two 16-part step sequencers for evolving control of pitch, filter, and amplitude
  • Newly refreshed versions of historic BOSS/Roland guitar synth and modeling technologies: OSC Synth, GR-300, E.Guitar, E.Bass, Acoustic, VIO Guitar, and Poly FX
  • Normal ¼-inch guitar/bass input for blending and Dynamic Synth processing
  • Premium effects and amps derived from the flagship GT-1000
  • Large LCD and intuitive editing interface for free-flowing sound creation
  • Eight freely assignable footswitches, external control support, effects loop, and configurable Main/Sub outputs
  • USB Audio/MIDI and MIDI I/O, plus Guitar-to-MIDI/Bass-to-MIDI function
  • Dedicated Guitar and Bass modes
  • Customize sounds with the BOSS Tone Studio editor and download pro patches at BOSS Tone Central
  • Roland GK-compatible pickup and 13-pin cable required for full access to all synth and modeling features


Instruments parts 3 parts

Instruments types

[Guitar mode]

Guitar synthesizer: 3 types (DYNAMIC SYNTH, OSC SYNTH, GR-300)

Electric guitar + Amp modeling: (Guitar = 13 types, Amp = 31 types)

Acoustic + Amp modeling: (Acoustic = 10 types, Amp = 31 types)

Bass + Amp modeling: (Bass = 3 types, Amp = 31 types)

Vio guitar modeling: 13 types

Poly FX: 5 types

[Bass mode]

Bass synthesizer: 3 types (DYNAMIC SYNTH, OSC SYNTH, ANALOG GR)

Bass + Amp modeling: (Bass = 11 types, Amp = 31 types)

AC bass + Amp modeling: (AC bass = 1 type, Amp = 31 types)

Electric guitar + Amp modeling: (Guitar = 3 types, Amp = 31 types)

Poly FX: 5 types

Alternate Tuning

[Guitar mode]

OPEN (D, E, G, A), DROP (D to A), D-MODAL, NASHVILLE, SHIFT (-12 to +12), USER, 12-string guitar function

[Bass mode]

SHIFT (-12 to +12), USER, 12-string bass function


Over 150 types

Patch Memory

Guitar mode: 200 (Preset) + 200 (User)

Bass mode: 200 (Preset) + 200 (User)

AD Conversion

Divided Pickup: 32 bits + AF method

Normal Pickup: 32 bits + AF method

* AF method (Adaptive Focus method) is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD and DA converters.

DA Conversion

32 bits

Sample Rate

48 kHz

Normal Input Level


RETURN: -10 dBu

Maximum Input Level


RETURN: +8 dBu

Input Impedance



Normal Output Level



SEND: -10 dBu

Output Impedance



SEND: 1 k

Recommended Load Impedance

MAIN OUTPUT (L/MONO, R): 10 k or greater

*Phones: 44 or greater

SUB OUTPUT (L, R/MONO): 10 k or greater

SEND: 10 k or greater


BANK DOWN switch, BANK UP switch, CTL1–2 switches, 1–4 switches, POWER switch, INST button, EFFECTS button, CTL button, EXIT button, WRITE button, SYSTEM button, PAGE button

1–6 knobs, OUTPUT LEVEL knob


Graphic LCD (512 x 160 dots, backlit LCD)


GK IN connector: 13-pin DIN type

GUITAR INPUT jack, SEND jack, RETURN jack, MAIN OUTPUT (L/PHONES, R/MONO) jacks, SUB OUTPUT (L, R/MONO) jacks: 1/4-inch phone type

CTL3, 4/EXP1 jack, CTL5, 6/EXP2 jack: 1/4-inch TRS phone type

USB COMPUTER port: USB B type (supports High-Speed USB, USB Audio, and USB MIDI)

MIDI (IN, OUT/THRU) connectors

DC IN jack

Power Supply

AC adaptor

Current Draw

800 mA


AC adaptor(PSB-1U + AC Cord Set)

Owner’s manual


For more information, please visit the manufacturer's website.