Boss GX-1

The Boss GX-1 is an ultra-portable amp and effects processor for electric guitar, built around amp modeling and a full multi-effects chain in one floor unit¹. Boss describes it as delivering "professional-grade sound and features in an ultra-portable platform for practice, recording, and performance"². It runs on algorithms inherited from the larger Boss GX-100, packs 23 amp models and 38 base-level effects, and sells for $229.99¹²³.

It launched at the start of 2026 alongside a bass counterpart, the BOSS GX-1B, as part of Boss's pre-NAMM announcements⁴. The GX-1 is designed for electrics, while the GX-1B is tailored for bassists⁵⁶⁷.

What the Boss GX-1 does

The GX-1 puts an entire rig in one compact box: amp models, cabinet simulation, and a chain of effects, all editable and storable. It uses Boss's AIRD technology, which the company says provides authentic tube amplifier tone and touch response¹. There are 99 ready-to-play preset memories and 99 user memories for storing custom sounds¹.

The modeling side covers 23 amp models, seven cabinet types, and eight slots for loading third-party impulse responses, plus six microphone types and three blends for shaping how the virtual cab is captured⁹¹⁰¹¹. The effects side offers 38 base-level effects with many more variations on top of that⁹. Guitar World's reviewer noted that "more than just a multi-effects unit, the Boss GX-1 offers entry-level amp and cab modeling too," and that it is worth a look if you want an affordable unit that can replace an entire rig¹².

For gigging, it has stereo outputs so you can connect straight to a PA without an amp¹³. For practice and recording, there is a headphone output and an aux input for playing along with backing tracks⁹³.

The controls: three footswitches, expression pedal and hexagon buttons

The GX-1 keeps its control surface small but flexible. Three footswitches and an onboard expression pedal with a toe switch are all freely assignable, so you can decide what each one controls in a patch¹.

Editing happens through a set of hexagon-shaped panel buttons that give a visual representation of the effect categories. A tap turns an effect on or off, and a long press accesses its detailed parameters⁸. Guitar.com's reviewer described the workflow simply: "Hold down the effects button of your choice, and the screen presents your options"¹¹. The 320 x 240-dot LCD screen is full-color and very bright⁹.

Power: AA batteries, adaptor or USB

The GX-1 offers four power options: four AA batteries, an AC adaptor, or USB, either computer bus power or a mobile battery¹. Current draw is 200mA, or 400mA via USB-C⁹.

On batteries, Boss quotes five hours of life, though Guitar World's reviewer got "a good three hours playing out of it with no issues"⁹. The unit breaks with the convention of some contemporary multi-effects by skipping a built-in rechargeable battery in favor of replaceable AA cells, which Guitar.com's reviewer noted as a practical choice for players who want to swap cells anywhere rather than wait for a charge¹¹.

History and versions: from the GT-1 and GX-100

The GX-1 sits at the meeting point of two Boss lines. Its algorithms are inherited from the GX-100, the larger amp/effects processor Boss launched in 2022 with eight custom footswitches and an expression pedal with toe switch¹¹⁴. The GX-100 itself is powered by an AC adaptor with a USB input for computer connection¹⁵¹⁶.

The GX-1's place in the lineup is also the successor to the Boss GT-1, the compact multi-effects unit Boss released in 2016 with a sound engine derived from the top-line GT-100¹⁷¹⁸. The GT-1 offered up to seven hours of battery life and USB connectivity, establishing the portable, battery-powered format the GX-1 continues¹⁹²⁰. Guitar World's reviewer noted the GX-1 "certainly looks much slicker than its predecessor, the Boss GT-1"⁹.

The GX-1 and GX-1B were announced together in January 2026 and were available immediately at $229.99⁸. Boss has since kept the platform current: firmware Version 1.03 or later is the latest, and if your unit shows that version there is no need to update²¹.

What reviewers said

Published reviews of the GX-1 have been broadly positive about its build and usability, with some reservations about its modeling. Guitar.com's review found the chassis "lightweight but far from flimsy," with "that trademark Boss ruggedness"⁴¹¹. The same reviewer, comparing it with the Positive Grid Spark Pedal, was more guarded on the amp models: "I'm not convinced the amp models sound as good as the Spark's though"²².

Guitar World's review highlighted the value of the package, the bright screen and the assignable control surface, while flagging the absent power supply and the shorter real-world battery life⁹. Its multi-effects pedal roundups list the GX-1 with 23 amps and 38 effects¹⁰¹¹, and Bass Gear Magazine covered the launch of both the GX-1 and the bass-focused GX-1B⁴.

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