BOSS GT-1B Bass Multi-Effects Processor

Premium Bass Tone in an Ultra-Compact, Portable Design

The BOSS GT-1B delivers a massive range of professional bass tones in a compact, lightweight, and road-ready floor unit. Powered by BOSS’s premium sound engine specially tuned for bass, the GT-1B gives bass players access to studio-quality amps, effects, and tone-shaping tools in a pedal that fits easily into a gig bag. Whether you’re practising at home, recording in the studio, or performing on stage, the GT-1B is a powerful and portable tone companion built for modern bassists.

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Premium Tone Tools for Bass

At the heart of the GT-1B is a bass-optimised version of BOSS’s most advanced sound engine, delivering exceptional clarity, punch, and dynamic response. A wide selection of bass preamps allows you to shape your core tone, including updated favourites from the GT-10B along with newly developed models designed specifically for today’s players.

Advanced MDP (Multi-Dimensional Processing) effects—such as limiter and distortion—use intelligent BOSS technology to preserve the natural character of your instrument while responding musically to your playing dynamics. This results in expressive, touch-sensitive tones that feel alive under your fingers.

The GT-1B also includes:

• Graphic EQ and T-Wah

• Modulation, delay, and reverb effects

• Creative effects like Harmonist, Bass Synth, Defretter, and more

• Built-in looper for practice, songwriting, and live creativity

From clean foundational tones to experimental textures, the GT-1B covers every bass style with ease.

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Mobile Powerhouse Design

Designed with portability in mind, the GT-1B is remarkably lightweight and compact, making it perfect for bassists who need professional tone on the move. Its modern design features smooth edges and a rugged chassis, allowing it to slip safely into the accessory pocket of a bass gig bag without risking damage to your instrument.

Power options include:

• AC adapter for stage and studio use

• Four AA batteries providing up to seven hours of playing time, ideal for busking, rehearsals, or travel

Wherever you play, the GT-1B is ready to go.

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Sound Creation Made Easy

Despite its powerful capabilities, the GT-1B is incredibly easy to use. Its intuitive interface allows beginners and experienced players alike to dial in great sounds quickly.

• Dedicated buttons provide instant access to each effect category

• Three panel knobs allow immediate parameter adjustment

• Buttons double as on/off switches with clear status indicators

Easy Select and Easy Edit functions streamline patch creation even further, enabling fast sound selection and fine-tuning without deep menu diving.

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Pro Control in a Compact Space

The GT-1B offers impressive hands-on control within its small footprint.

• Three footswitches handle patch changes, tuner access, looper control, and more

• CTL1 control switch is fully assignable (tap tempo, effect toggles, etc.)

• Built-in expression pedal with toe switch for volume, wah, pitch, or parameter control

For expanded setups, a rear jack supports up to two external footswitches or an additional expression pedal, giving you even more flexibility for live performance.

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BOSS Tone Central & USB Recording

By connecting the GT-1B to your computer via USB, you unlock even more creative potential.

• BOSS Tone Central offers free professional patch collections created by top bassists

• BOSS Tone Studio editor/librarian software allows deep editing and patch management

• BOSS Tone Exchange lets you download and share Livesets with players worldwide

• USB audio interface functionality enables direct recording into your favourite DAW

This makes the GT-1B an excellent choice for home recording, demo production, and silent practice.

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Key Features

• Premium BOSS sound engine optimised for bass

• Pro-level bass amps and effects in a compact floor unit

• Advanced MDP effects for expressive, musical response

• Built-in expression pedal and assignable control switch

• Easy Select and Easy Edit functions for fast sound creation

• Lightweight, rugged design with smooth edges

• Battery powered (up to 7 hours) or AC operation

• USB connectivity for recording and patch management

• Free patches and software via BOSS Tone Central