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Flagship Bass Sound in an Ultra-Compact Chassis!
The GT-1B gives bassists an extremely broad range of tone-shaping tools in a compact, rugged chassis. Thanks to BOSS's flagship sound engine, you get full access to a huge selection of bass-optimized amps and effects for stage and studio use. The slim interface lets you call up sounds quickly, while the control buttons and the expression pedal let you tweak effects in real time. Via the BOSS Tone Central platform you can also download new patches, editing software and more. The compact, tough, battery-powered GT-1B is the ultimate mobile effects companion for every bassist.
Top-Quality Sound Tools for Bassists
Equipped with BOSS’s most advanced sound engine, optimized for bass, the GT-1B delivers high-quality sound and effect tools at a pro level. The wide selection of preamps — including updated favorites from the GT-10B and two completely new models — lets you shape your bass tone from the ground up. Built on advanced MDP technology, the premium effects such as limiter and distortion preserve your instrument’s character and response, letting your musical creativity run free. In addition to bass essentials like a graphic EQ and T-Wah, the GT-1B offers impressive extras including a harmonizer, bass synth and a defretter. Numerous modulation, delay and reverb effects plus an internal looper give you more room for creativity during spontaneous jam sessions.
Easy Sound Creation
The intuitive interface makes it easy for even multi-effects beginners to create sounds and fine-tune parameters. Dedicated buttons give direct access to each effect category, and the three knobs let you comfortably adjust the effects. The buttons also act as on/off switches and include status indicators so you can see at a glance which categories are selected. The clear select-and-edit functions further simplify patch creation and let beginners and pros build top-quality multi-effects sounds in just a few steps.
Professional Control Despite Compact Size
The GT-1B’s three footswitches let you select patches, access the tuner, control the looper and more without taking up much space. The CTL1 switch is assignable, so functions like tap tempo and effect on/off can be controlled directly, while the expression pedal and toe switch can control volume, wah, pitch shift and many other effect parameters. If you want even more control, you can connect up to two external footswitches or an expression pedal to the GT-1B. The USB port also enables direct recording to your DAW in addition to giving access to BOSS Tone Central and BOSS Tone Studio.
Mobile Powerhouse
The GT-1B was designed for bassists on the road. It’s remarkably light and compact, making it perfect for tight stage situations and travel with minimal luggage. The robust, modern design lets the GT-1B slip easily into the accessory pocket of a bass bag without worrying about your instrument. With the option to run on mains or batteries, the GT-1B offers maximum flexibility in any performance situation so you can take your sound anywhere.
BOSS Tone Central and BOSS Tone Studio
On the BOSS Tone Central website you’ll find a huge selection of free patch collections for the GT-1B. Programmed by top bassists, these patches can be used immediately and provide advanced players with the perfect starting point to craft their own custom sounds. The free BOSS Tone Studio software offers a comprehensive editor with an archive and gives direct access to the patch collections on BOSS Tone Central.
Compact and Powerful!
Features
- BOSS flagship sound engine optimized for bassists
- Professional amps and effects in a lightweight, compact floor multi-effects unit
- Essential onboard tools for shaping your core bass sound
- Includes advanced MDP effects for maximum musical expression
- Modern, rounded design for safe transport in your instrument bag
- Comfortable selection and editing of functions for quickly calling up and fine-tuning patches
- Up to seven hours of mobile operation on four AA batteries
- Integrated control switch and expression pedal; connector for footswitch/expression pedal, USB port
- Download professional patches and editing software for free from the BOSS Tone Central website
- Sampling Frequency: 44.1 kHz
- A/D Conversion: 24 bits + AF method
- D/A Conversion: 24 bits
- Effects: 90 types
- Patches: 99 (User) + 99 (Preset)
- Phrase Loop: 32 seconds
- Nominal Input Level: INPUT: -10 dBu, AUX IN: -20 dBu
- Maximum Input Level: INPUT: +7 dBu, AUX IN: 0 dBu
- Input Impedance: INPUT: 1 M ohm, AUX IN: 27 k ohms
- Nominal Output Level: OUTPUT (L/MONO, R): -10 dBu, PHONES: -10 dBu
- Output Impedance: OUTPUT (L/MONO, R): 1 k ohm, PHONES: 44 ohms
- Recommended Load Impedance: OUTPUT (L/MONO, R): 10 k ohms or greater, PHONES: 44 ohms or greater
- Switches: DOWN, UP, CTL1, EASY SELECT, EASY EDIT, FX1/LIMITER, OD/DS, PREAMP, FX2/MOD, DELAY, REVERB, MEMORY EDIT, EXIT, ENTER, MENU, Expression pedal
- Display: Graphic LCD (132 x 32 dots, backlit)
- Connections: INPUT, OUTPUT (L/MONO, R), CTL2, 3/EXP2, AUX IN, USB COMPUTER, DC IN
- Power Supply: 4 x AA batteries
- Includes batteries
- Battery life: approx. 7 hours
- Dimensions (W x H x D): 305 x 56 x 152 mm
- Maximum height: 74 mm
- Weight (including batteries): 1.3 kg
Scope of delivery
- 1 x Boss GT-1B Bass Multi-Effects Pedal
Suitable accessories (Not included in the delivery.)
Specification
- Product number 00050075
- Colour Silver
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Financing
easyCredit Ratenkauf
- 2 to 60 months term
- Financing from 23,00 € / month
- More information about installment purchase
ConsorsFinanz Finanzierung
- 6 to 72 months term
- 0% financing for 21,08 € per month
- More information on financing
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The hotline is currently not manned. You can reach us again on Wednesday, 20.05.2026 at 09:30.
| Wednesday | 09:30 - 18:00 | |
| Thursday | 09:30 - 18:00 | |
| Friday | 09:30 - 18:00 | |
| Saturday | 09:30 - 13:30 | |
| Monday | Closed |
Different opening times |
| Tuesday | 09:30 - 18:00 |














