Boss GX-100 Guitar Multi-Effects Processor Pedal

Want a multi-effects pedal packed with legendary Boss tones? The Boss GX-100 multi-effects pedal boasts a touch display, over 150 Boss effects, and amp sims.

Amp/effects processor for guitar and bass with premium BOSS tone technologies, streamlined modern design, and color touch display for easy sound creation.

Fusing advanced BOSS tone technologies into a sleek, ultra-modern hardware design, the inspiring GX-100 delivers top-level performance everywhere you play. Explore 23 AIRD amplifiers and over 150 effects derived from the flagship GT-1000, and craft great sounds in seconds with the intuitive color touch display. Up to 15 simultaneous effect blocks provide unlimited tone possibilities, coupled with deep real-time command via onboard footswitches, an expression pedal, and external control support.

Authentic Amps and Cabs

The GX-100 provides superior tone and natural tube amp feel in any playing situation, thanks to AIRD technology backed by the refined Tube Logic approach. AIRD is infused into the DNA of every GX-100 guitar and bass amplifier, while AIRD Output Select types let you perfectly tailor the sound for any destination, whether it's an amp input, FRFR monitor, or house PA. A wide selection of onboard speaker cabs are also available, plus slots for importing your own speaker IRs via USB.

Exceptional Effects

With over top-quality 150 effects from the vast BOSS library, you're able to realize nearly any sound you can imagine with the GX-100. Numerous overdrives and distortions are available, plus BOSS classics like Slow Gear, Octave, and more. There's also a diverse range of mod effects, delays, and reverbs, read more along with many effects specially tuned for bass. And with the send/return jacks, you can integrate favorite stomps or your amp's effects loop into the GX-100 ecosystem.

Craft Your Personal Voice

The GX-100 comes with 100 preset memories to start playing right away. But it's easy to edit them for your needs or build new ones from the ground up. Let your imagination run wild with 15 dedicated block types--including two amp blocks--and chain effects in series and parallel to create all types of sonic variations. And with 200 user memories, you're able to store enough onboard sounds to cover nearly any song or style.

Touch and Go

Sound creation and on-the-gig editing are simpler than ever with the GX-100. The vivid color touch display offers intuitive control of patch and effects selection, parameter tweaks, signal chain adjustments, and much more. The display works in harmony with the four knobs and page buttons on the panel, providing a frustration-free experience that keeps your attention focused on the music.

Custom Command

The GX-100 offers deep real-time control with eight custom footswitches and an expression pedal with toe switch. They come configured for patch/bank selection and patch-specific control, but you can freely reassign them to meet your unique needs. Switching into Manual mode provides direct stompbox-like control, and you can go even further with external control via footswitches, an expression pedal, or MIDI. There's also a jack to remotely switch channels on your amp with memory selection or an assigned footswitch.

Your Partner in Tone

In addition to stage use, the GX-100 excels as a USB audio interface for recording and performing with a computer. You can record directly into music production software, re-amp tracks, and monitor the overall sound through the GX-100's outputs. The headphones jack lets you practice anytime and anywhere, while the onboard looper is perfect for jamming, developing sounds and ideas, and extending your creative range while performing.

Go Deeper with BOSS Tone Studio

Using BOSS Tone Studio for macOS and Windows, you're able to tweak every GX-100 parameter, save sounds, and organize Live Sets for different gigs from your computer. And with the optional Bluetooth(R) Audio MIDI Dual Adaptor, you can wirelessly adjust settings on the gig from the BOSS Tone Studio app on your mobile device and stream backing music from your device's library.


- Powerful, easy-to-use amp/effects processor for guitar and bass
- 24-bit AD/DA, 32-bit floating-point processing, and 48 kHz sampling rate
- Authentic tube amplifier tone and touch response with AIRD technology
- 23 amplifier types and over 150 BOSS effects
- Ultra-flexible amp/effect routing with 15 assignable blocks
- Wide selection of onboard speaker types and support for loading WAV speaker IRs
- Streamlined modern design with intuitive color touch display and rugged metal chassis
- Unlimited effects control with freely assignable onboard footswitches and expression pedal with toe switch
- Connect up to two footswitches or an expression pedal for expanded control
- Send/return loop for external pedals or four-cable method
- Control jack for remote channel switching on your amplifier
- MIDI I/O jacks and multi-channel computer recording via USB
- Edit sounds from your computer with BOSS Tone Studio for macOS and Windows
- Optional Bluetooth(R) Audio MIDI Dual Adaptor allows you to edit sounds and stream audio from an iOS or Android mobile device
read less

- Sampling Frequency: 48 kHz
- 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
- Processing: 32-bit floating point
- Effects: 154 Types
- Maximum Number of Effects: 15+3 (DIVIDER/MIXER, SEND/RETURN, LOOP)
*depending on the circumstances
- Memories: 200 (User) + 100 (Preset)
- Phrase Loop:
- 38 sec. (MONO)
- 19 sec. (STEREO)
- Tuner Internal Detection: +/-0.1 cent
- Nominal Input Level:
- INPUT: -10 dBu
- RETURN: -10 dBu
- Maximum Input Level:
- INPUT: +18 dBu
- RETURN1: +8 dBu
- Input Impedance:
- INPUT: 1 M ohm
- RETURN1: 1 M ohm
- Nominal Output Level:
- OUTPUT (L/MONO, R): -10 dBu
- PHONES: -10 dBu
- SEND1: -10 dBu
- Output Impedance:
- OUTPUT (L/MONO, R): 1 k ohm
- PHONES: 44 ohms
- SEND: 1 k ohm

- Recommended Load Impedance:
- OUTPUT (L/MONO, R): 10 k ohms or greater
- PHONES: 44 ohms or greater
- SEND: 10 k ohms or greater

- Controls:
- BANK DOWN switch, BANK UP switch, CTL1 switch, CTL2/TUNER switch,
- 1--4 switches, POWER switch, EXP1 switch, GND LIFT switch
- EFFECTS button, CTL/EXP button, MENU button, EXIT button, WRITE button, IN/OUT SETTINGS button, PAGE button,1--4 knobs,
- SELECT knob, OUTPUT LEVEL knob, EXP1 pedal
- Display: Color Graphic LCD (480 x 272 dots) Touch screen
- Connectors:
- INPUT jack, OUTPUT (L/MONO, R) jacks, SEND jack, RETURN jack: 1/4-inch phone type
- PHONES jack: Stereo 1/4-inch phone type
- CTL3, 4/EXP2 jack, AMP CTL1, 2 jack: 1/4-inch TRS phone type
- MIDI (IN, OUT) connectors
- USB COMPUTER port: USB B type
- Blutooth Adaptor port: BT-DUAL ADAPTOR
- DC IN jack
- Power Supply: AC adaptor
- Current Draw: 1.2 A
- Dimensions:
- 460 (W) x 193 (D) x 73 (H) mm
- 18-1/8 (W) x 7-5/8 (D) x 2-7/8 (H) inches
- Maximum height:
- 460 (W) x 193 (D) x 94 (H) mm
- 18-1/8 (W) x 7-5/8 (D) x 3-3/4 (H) inches
- Weight (including battery): 3.5 kg / 7 lbs 12 oz
- Accessories:
- AC adaptor (PSB-1U + AC Cord Set)
- Owner's manual

- Options (sold separately):
- Footswitch: FS-5U, FS-5L, FS-6, FS-7
- Expression Pedal: EV-30, FV-500L, FV-500H, Roland EV-5

*0 dBu = 0.775 Vrms
*The specifications are subject to change without notice.
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 9.75 lbs
Shipping Dimensions: 24 x 11 x 6 in
Manufacturer Part Number (MPN): GX-100

For support or warranty questions, please contact the manufacturer:
Phone: 323-890-3700

Reviewers gave this product an overall rating of 5 out of 5 stars. (2 ratings)
Submitted May 3, 2022 by Robert P in Edgewood, NM
"Excellent bang for the buck!"
Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
This is a heavy duty pedal with so many different great sounding amps and effects that I don't even know where to start. Well built is an understatement. The build of it screams professional. from the chassis to the knobs and expression pedal this thing feels Pro in every way.The amps are fewer than most companies offer but BOSS went the quality over quantity route here. From crystalline cleans to all out brutal and everything in between. The drives are excellent and so are the modulations, delays, and reverbs. I find them superior to my Helix actually. There's not enough room in this review box for me to go over everything I love. A couple things I do not love..There's no poly pitch in this unit. The assigns can be confusing at times especially when it comes to assigning the expression pedal. It was ok once I wrapped my head around it but it was definitely and obstacle I had to overcome. Overall this unit is well worth the 599 price tag. I have owned many modeling units for many years and this is one of the best I have had.
Musical Background:
Working musician for 35 years
Musical Style:
Rock, metal, blues
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