Boss GX-100


Multi-Effect Pedal for Electric Guitar & Bass

  • Authentic tube amp sound with realistic response thanks to AIRD technology
  • 200 Memory locations
  • 23 Amp types and over 150 BOSS effects
  • Versatile amp/effect routing with 15 assignable blocks
  • Numerous speaker types & import possibility of own WAV impulse responses
  • Individually assignable integrated control footswitch and expression pedal with toe switch
  • Send/return loop for external pedals in four-cable setups
  • Amp control switch output
  • Computer editing with BOSS Tone Studio for macOS & Windows
  • Optional Bluetooth Audio MIDI Dual Adapter for editing sounds and streaming audio via iOS and Android mobile devices (Art. 522827, not included)
  • Controls: 1,2,3,4, Select, Output Level
  • Push buttons: Page Up/Down, Effects, CTL/EXP, Menu/ Exit, Write, In/Out Settings
  • Switch: Ground Lift
  • LED: 1, 2, 3, 4, C1, Bank Up/Down, C2/Tuner, EXP 1 SW
  • Foot switch: 1, 2, 3, 4, C1, Bank Up/Down, C2/Tuner, EXP 1 SW
  • Input: 6.3 mm jack
  • L&R output: 2x 6.3 mm jack
  • Headphone output: 6.3 mm stereo jack
  • FX Send & Return: 2x 6.3 mm jack
  • AMP CTL 1, 2: 6.3 mm stereo jack
  • CTL 3,4/EXP 2: 6.3 mm stereo jack
  • Midi In & Out
  • Mains adapter connection: Hollow female plug 5.5 x 2.1 mm, negative pole inside
  • Power consumption: 1200 mA
  • Power supply with a PSB-1U 9 V DC mains adapter (included in delivery)
  • Dimensions (W x D x H): 490 x 193 x 73 mm
  • Weight: 3500 g

Note: Battery operation is not supported

Available since March 2022
Item number 538371
Sales Unit 1 piece(s)
Design Floorboard
Tube(s) No
Amp Modeling Yes
Effects Yes
Headphone Output Yes
Direct Out Yes
MIDI Interface Yes
Integrated Expression Pedal Yes
Connections for Pedals or Switches No
Aux-Input Yes
Integrated Tuner Yes
USB-Port Yes
Drum-Computer No
Incl. Tuner 1
Expression Pedal 1
Headphone connection 1
Line Out 1
PSU included 1
Incl. power supply 1
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47 Customer ratings

4.6 / 5

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30 Reviews

Unbeatable at this price point
artemusprime 13.12.2022
This unit is incredible for the price. I remember most modelling pedals being cheap and beginner level about a decade ago but it's not the case these days. The GX is very well built, heavier than I expected. Every switch is fully programmable and customizable, per patch. Can also send MIDI CCs per switch, so I've mapped some switches in Ableton Live for scene scrolling and launching. The display is great but the unit can be used without heavily relying on the touch screen and instead by using buttons and encoders. The rotary encoders feel great, are not cheap, are indented and 'click in'. The four rotaries below the display can be mapped to any parameter within the patch for quick access. Very logical and straightforward UI, doesn't take long to learn. The blocks (hexagons) are color coded by category. No latency to speak of when playing and switching patches. A separately sold Bluetooth module can be purchased for editing of patches on an iPad or phone, so you don't have to crouch constantly. I've literally recreated my own rig (amp, stompboxes) on the GX-100 and couldn't believe how good it sounded and responded to touch, so I'm selling everything and keeping this as my main amp/effects unit. Near-infinite possibilities in patching, routing and assigns, including the expression pedal, which has good travel and sensitivity. Time based effects such as delays can be tempo synced to an incoming MIDI clock, or you can set the GX to be a master clock and send a MIDI Start/Stop from one of the switches. BPM can be set per patch also. The looper module seems to be basic because obviously Boss won't eat into its own looper market with the GX. I couldn't find a way to sync the looper to the internal or external clock or quantize the bars, so it's just a basic looper for quick ideas, with you as the reference in timing. Maybe it'll get better with an update but it's just a minor con for me.
Overall, I'm very impressed with the GX-100 and would recommend it if you're in the market for a swiss army knife of a modeller on a moderate budget.


ElQuico 12.03.2023
Very good product with accurate preamp modelling. Custom impulse responses can enrich it's preamp collection. Lots of useful and accurately modelled effects. Easy handling straight on the unit itself, I find intuitive and very easy to get used to,Tone studio also makes even easier. I can't think of something negative to say. I only have it about a month I will update if needed.


Awesome multi-effect pedal but...
Anonymous 29.03.2023
Just jumped into GX100 coming from the old GT3. Sound is awesome, easy of use is absolutely stunning (wouldn't go for the 1000 until I can afford a sound engineer), quality is perfect but Slicer has disappeared from it... Obviously if you were not using it you won't notice but if you were you will have to solve it by buying it or other pedals and plugging them via send-return. In any case worth to recommend an spectacular multi-effect pedalboard with a professional sound and full ability for setting up all kind of parameters per effect, all kind of possibilities when working on manual mode (1 pedal may be assigned to start 1, 2 or n effects if you wish), you may set up an effect and create copies for each of your guitars. A pleasure to work with such technology.


davdub10 28.08.2023
Its great unit i was blown away how is simple to use, i can only say GREAT PRODUCT


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