The BOSS GX-1B redefines portable bass tone, delivering professional-grade sound in a compact, travel-ready package. Designed for practice, recording, and live performance, it puts a world of bass-optimized amps and effects at your fingertips. With intuitive controls and a high-resolution display, creating dynamic, expressive tones has never been easier. Rugged, powerful, and versatile, the GX-1B is the ultimate all-in-one companion for bassists seeking uncompromising sound anywhere, from the bedroom to the stage.

Features

• Ultra-portable amp/effects processor for bass with premium BOSS sound and features.
  
• Authentic tube amplifier tone and touch response with AIRD technology.
  
• Straightforward operation with a color display and intuitive effect category buttons.
  
• Exceptional audio quality with 24-bit AD and 32-bit DA conversion, 32-bit floating-point processing, and 48 kHz sampling rate.
  
• Explore 16 amplifier types and over 130 BOSS effects.
  
• Eight simultaneous effect blocks plus volume pedal and noise suppression.
  
• Gear Suite feature allows you to quickly configure each amp and effect with the turn of a knob.
  
• Includes 99 ready-to-play preset memories and 99 user memories for storing custom sounds.
  
• Three footswitches and an expression pedal with toe switch, all freely assignable.
  
• Play along with songs from your mobile device via onboard Bluetooth®.
  
• Record and play tracks in music production software on a computer or mobile device via USB-C®.
  
• BOSS Tone Studio app (macOS/Windows/iOS/Android) with powerful practice features and sound-editing tools.
  
• Download and share Livesets on BOSS Tone Exchange.
  
• Support for loading WAV speaker IRs.
  
• Jack for expanded control with up to two footswitches or an expression pedal.
  
• Tap into wireless foot control with the FS-1-WL Wireless
• Footswitch and EV-1-WL Wireless Expression Pedal.
  
• Flexible power options: three AA batteries, AC adaptor, or USB (computer bus power or mobile battery).
  
• Compact, lightweight design fits easily in the pocket of a guitar case or bag.

Specifications

Audio Conversion
Sampling Frequency: 48 kHz
AD Conversion: 24 bits + AF method
*Note: AF method (Adaptive Focus) is a proprietary Roland & BOSS technology that improves the signal-to-noise ratio of AD and DA converters.
DA Conversion: 32 bits
Processing: 32-bit floating point

Effects and Memory
Effects: 135 types
Memories: 99 User + 99 Preset
Phrase Loop: 38 sec. (Mono), 19 sec. (Stereo)

Tuner
Type: Internal Detection
Accuracy: ±0.1 cent

Inputs
Nominal Input Level: INPUT: -10 dBu
Maximum Input Level: INPUT: +7 dBu
Input Impedance: INPUT: 1 M ohm

Outputs
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

Controls
Buttons/Switches: DOWN switch, UP switch, CTL1 switch, EXP1 switch, DOWN button, UP button, MENU button, EXIT button, ENTER button
Knobs: 1–3 knobs
Pedal: EXP1 pedal
Effect Buttons: FX1/COMP, OD/DS, AMP/CAB, FX2/EQ, FX3/MOD, DELAY, REVERB, EDIT, PEDAL FX

Display
Type: Color Graphic LCD
Resolution: 320 x 240 dots

Connectors
INPUT Jack: 1/4-inch phone type
OUTPUT Jacks (L/MONO, R): 1/4-inch phone type
PHONES Jack: Miniature phone type
CTL2,3/EXP2 Jack: 1/4-inch TRS phone type
USB COMPUTER Port: USB Type-C
DC IN Jack: Yes

Power Supply
Battery: 4 x AA (LR6) Alkaline
USB Bus Power: Yes
AC Adaptor: PSA-S series (sold separately)

Current Draw
AC Adaptor/Battery: 250 mA
USB: 400 mA

Battery Life
Expected Battery Life: Approx. 5 hours (Alkaline, continuous use)
*Note: Actual battery life may vary depending on usage conditions.