Pricing and availability

We compare 600+ stores and found this item at 9 stores. Prices updated .

Sweetwater
4.0 (10)
$846.99
Amazon
4.0 (14)
$846.99 New
$738.00 Used (Like New)
Reverb
3.0 (6)
$714.99 New
$540.00 Used
Thomann
4.4 (19)
$599.00 $595.00 $4.00 · All time low
Gear4Music
£562.00

Average Price: $770

High-end/Boutique

$150

$601+

Price Tier

Budget

Standard

High-end

Price History

Based on price data from 6 merchants for "Boss GM-800 Guitar Synthesizer". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Transform your guitar or bass into a limitless sonic powerhouse with the BOSS GM-800 Guitar Synthesizer. This cutting-edge pedal is driven by the advanced ZEN-Core sound engine, renowned for its use in Roland's flagship synthesizers. The GM-800 offers an impressive library of over 1,200 tones, ranging from lush acoustic pianos to iconic Roland synths like the JUPITER-8 and JUNO-106. Its high-performance DSP ensures a natural playing feel and rock-solid tracking, allowing you to express every nuance of your performance with precision.

The GM-800's intuitive Scene workflow lets you easily combine and edit tones, bringing your musical ideas to life. With Roland Cloud support, you can explore an ever-expanding universe of sounds and effects, tailored to inspire your creativity. The pedal is equipped with versatile connectivity options, including USB audio/MIDI and standard MIDI I/O, making it a seamless addition to both live and studio setups.

Compact and sleek, the GM-800 is designed to integrate effortlessly into any rig, whether on a pedalboard or a desktop. With four top-panel footswitches and two external control jacks, it offers extensive control for live performances. The GM-800 also supports the Serial GK interface, facilitating the connection of additional BOSS synthesizer units for expanded sonic possibilities. Whether you're performing on stage or crafting tracks in the studio, the GM-800 delivers unmatched versatility and depth.

Key Features:

  • Next-generation guitar and bass synthesizer with the Serial GK interface
  • Advanced ZEN-Core sound engine with over 1,200 onboard sounds
  • Natural playing feel and rock-solid tracking via high-performance DSP
  • Powerful Scene workflow with four Tones plus Rhythm
  • USB audio/MIDI connectivity and standard MIDI I/O
  • Compatible with BOSS Tone Studio for detailed sound editing
  • Supports Roland Cloud for access to additional Sound Packs and Wave Expansions
  • Includes four top-panel footswitches and two external control jacks
  • Functions as a standalone synthesizer and a MIDI sound module

Owner's manual

Boss GM-800 Guitar Synthesizer User Manual

Product specs

Available since July 2023

FAQs

What kind of connectivity options does the Boss GM-800 Guitar Synthesizer offer?

The Boss GM-800 provides versatile connectivity, including MIDI, USB, and standard 1/4-inch guitar inputs, allowing integration with various setups and DAWs for seamless performance and recording.

Can the Boss GM-800 Guitar Synthesizer be used with any electric guitar?

Yes, the Boss GM-800 is designed to work with any electric guitar, though optimal performance is achieved using the compatible GK pickup system for precise tracking and sound generation.

What are the standout features of the Boss GM-800 Guitar Synthesizer's sound engine?

The GM-800 features a dynamic sound engine with four Tone parts and a Rhythm part, offering a wide range of synth parameters, alternate tunings, and string assignments for extensive sound shaping.

Is the Boss GM-800 Guitar Synthesizer suitable for live performances?

Yes, the Boss GM-800 is well-suited for live performances, offering quick access to sound changes and robust connectivity options, ensuring reliable integration into live setups.

Does the Boss GM-800 Guitar Synthesizer require a specific power supply?

The Boss GM-800 typically requires a standard DC power supply, commonly used with many guitar pedals and synths, ensuring easy integration into existing pedalboard setups.

Cyberattack

Cyberattack

Boss GM-800 Guitar Synth: How to Be Advanced

Video thumbnail for Boss GM-800 Guitar Synth: How to Be Advanced by Cyberattack

Boss GM-800 Guitar Synth: How to Be Advanced

Cyberattack

Cyberattack

Video thumbnail for BOSS Livestream | GM-800 Guitar Synthesizer featuring Alex Hutchings by BOSSchannel

BOSS Livestream | GM-800 Guitar Synthesizer featuring Alex Hutchings

BOSSchannel

BOSSchannel

Video thumbnail for GM-800 Synth & Guitar on Separate Channels. BETTER Busking! by Gear Sounds

GM-800 Synth & Guitar on Separate Channels. BETTER Busking!

Gear Sounds

Gear Sounds

Video thumbnail for BOSS GM 800 PLAYTHROUGH by ANDRE DINUTH by Andre Dinuth.

BOSS GM 800 PLAYTHROUGH by ANDRE DINUTH

Andre Dinuth.

Andre Dinuth.

Video thumbnail for BOSS GM-800 Performance by Alex Hutchings by Roland Indonesia

BOSS GM-800 Performance by Alex Hutchings

Roland Indonesia

Roland Indonesia

Reviews

PROS

  • Offers around 1500 different sounds

  • Includes 100 presets and 100 extra memory slots

  • Can layer 4 different sounds at once

  • Allows splitting of strings per sound by string and fret

  • Great tracking speed and accuracy

  • Major update to the synth section with high-quality programs

CONS

  • Requires additional components or a new GK pickup for use

  • No wireless GK pickup or touch screen features

  • Lacks Bluetooth connectivity

  • Some users experience significant latency, especially bass players

  • Potential mistracking issues with the GK5 system

  • Presets primarily focused on keyboard sounds, less on guitar performance

  • Missing GR300 style sounds and COSM modeled stringed instruments found in previous models

Critic Reviews

Boss GM-800 Guitar Synthesizer System - the Synth and Software Review - Synth and Software

synthandsoftware.com

The Boss GM-800 Guitar Synthesizer showcases impressive versatility and improved tracking over its predecessors, making it a noteworthy option for guitarists looking to dive into synthesis. However, the lack of intuitive patch change options and the absence of an audio input jack can lead to a cumbersome setup experience. The documentation is also criticized for being scattered and unclear, challenging users who are not tech-savvy. While the sound quality and effects are commendable, the steep learning curve may deter some potential buyers. Overall, the GM-800 stands out for its capabilities but may require patience to fully exploit its potential.

Boss GM-800

soundonsound.com

The Boss GM-800 Guitar Synthesizer delivers impressive pitch tracking and a broad sound palette, making it a strong contender for guitarists seeking synth capabilities. Its user-friendly interface and integration with DAWs enhance its appeal. However, adapting older GK pickup systems requires an additional converter, which may deter some users. The sound transfer process from Zenology is also a bit cumbersome. Overall, the GM-800 offers significant advancements at a reasonable price, appealing to both beginners and seasoned players looking to expand their sonic horizons.

positive

5.0 out of 5

Based on 0 Reviews and 2 Ratings

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Artist usage

Add artist
See how Steve Vai uses Boss GM-800 Guitar Synthesizer

Steve Vai

Guitarist

Whitesnake

...
Verified via YouTube

In the video titled "Steve Vai | What's on Your Pedalboard, Beat Edition" by Sweetwater, Steve Vai confirms using the Boss GM-800 Guitar Synthesizer at the 4:46 mark. He further showcases this pedal at the 6:18 mark.

[I use the GM-800] more like a sampler

See how Steve Stevens uses Boss GM-800 Guitar Synthesizer

Steve Stevens

Guitarist

Michael Jackson (band)

...
Verified via Premier Guitar

According to the "Steve Stevens Rig Rundown" by John Bohlinger on Premier Guitar, Steve Stevens' live pedalboard includes the Boss GM-800 Guitar Synthesizer.

See how Cameron Winter uses Boss GM-800 Guitar Synthesizer

Cameron Winter

Singer, Guitarist

Geese

...
Verified via YouTube

At 5:50 in this YouTube video of Geese performing at the Opera House in Toronto, the large pedal beneath Cameron Winter closely resembles the GM-800's interface. His main touring guitar also has the compatible GK-5 pickup attached.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use Boss GM-800 Guitar Synthesizer, it is most commonly used with the following gear.

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