BOSS - GX-1B | Bass Effects Processor

Your Ultimate Bass Companion

The GX-1B delivers professional-grade sound and features in an ultra-portable platform for practice, recording, and performance. Premium bass-tuned amps and effects supply endless creative fuel, while the high-res color display, intuitive effect buttons, and Gear Suite tools make sound creation a snap. Rugged, powerful, and remarkably compact, the GX-1B is filled with inspiring tones for every bassist, from beginning players to touring pros seeking an all-in-one travel solution with no-compromise sound.

Introduction Movie

Standard 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 a 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: four 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

*Compatibility with all third-party devices and software is not guaranteed.

Download “BTS for GX-1B” for iOS
Download “BTS for GX-1B” for Android
Download “BOSS TONE STUDIO for GX-1B” for Windows/macOS

Pro Tones for Every Player

The GX-1B captures decades of our bass-focused sound development in one versatile processor. Explore 16 highly expressive AIRD amps, complemented by over 130 effects from the vast BOSS library. With adjustable effect order and eight simultaneous blocks plus a volume pedal and noise suppressor, you can easily craft custom setups for playing different music styles and performing specific songs on stage.

Smooth Operation

Whether editing presets or building sounds from scratch, the GX-1B is designed for frustration-free creation. Inspired by the GX-100 and GX-10 interfaces, the hexagon-shaped effect buttons provide a visual representation of the sound categories, and you can use them to turn effects on/off with a tap or access detailed parameters with a long press. You also get 99 memories loaded with ready-to-play presets, plus 99 user memories for storing your custom sound creations.

Build Sounds Fast with Gear Suite

The GX-1B introduces Gear Suite, a powerful new feature for dialing in amp and effect sounds fast. Each amp/effect type contains multiple factory Gear Suite settings, letting you recall a complete set of professionally tuned parameters with the turn of a knob. You can also edit effect parameters to taste and save favorites in user Gear Suite locations for instant access to personalized settings.

Performance Freedom

Once you’ve crafted your tones, grow your expressive range on stage with advanced real-time control. Assign the onboard footswitches and expression pedal to control anything you can imagine—from basic effects on/off to adjusting one or more parameter targets at once—and go even further with wired and wireless options for external control. The GX-1B also offers three flexible power options (batteries, AC adaptor, or USB), allowing you to practice and perform anywhere.

Your Daily Creative Partner

The GX-1B flows wherever your creativity takes you. Interface with a mobile device or computer via Bluetooth or USB to jam with songs and record tracks in a DAW. When you’re ready to dive deeper, BOSS Tone Studio is your ideal partner. Use the Session feature to play along with YouTube songs and lessons, complete with AB repeat and speed adjustment. Hone your skills with a metronome and rhythms. And access BOSS Tone Exchange within the app to stay inspired with pro sounds. Editing tools are also on hand to fine-tune effects and organize sounds for later recall.

Product Gallery

Specifications
Sampling Frequency: 48 kHz
AD Conversion: 24 bits + AF method
*AF method (Adaptive Focus method) This is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD and DA converters.
DA Conversion: 32 bits
Processing: 32-bit floating point
Effects: 135 types
Memories: 99 (User) + 99 (Preset)
Phrase Loop: 38 sec. (MONO)
19 sec. (STEREO)
Tuner Internal Detection: +/-0.1 cent
Nominal Input Level: INPUT: -10 dBu
Maximum Input Level: INPUT: +7 dBu
Input Impedance: INPUT: 1 M ohm
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: DOWN switch, UP switch, CTL1 switch, EXP1 switch,
DOWN button, UP button, MENU button, EXIT button, ENTER button,
1-3 knobs, EXP1 pedal, FX1/COMP button, OD/DS button, AMP/CAB button,
FX2/EQ button, FX3/MOD button, DELAY button, REVERB button,
EDIT button, PEDAL FX button
Display: Color Graphic LCD (320 x 240 dots)
Connectors: INPUT jack, OUTPUT (L/MONO, R) jacks: 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(R)
DC IN jack
Power Supply: Alkaline battery (AA, LR6) x 4
USB BUS Power
AC adaptor (PSA-S series: sold separately)
Current Draw: 250 mA (AC adaptor/Battery)
400 mA (USB)
Expected battery life under continuous use: Alkaline: Approx. 5 hours
* These figures will vary depending on the actual conditions of use.
Accessories: STARTUP GUIDE
Alkaline battery (AA, LR6) x 4
Leaflet "Read Me First"
Options (sold separately): AC adaptor: PSA-S series
Footswitch: FS-5U, FS-5L, FS-6, FS-7
Expression Pedal: EV-30, FV-500L, FV-500H, Roland EV-5
Wireless MIDI Expression Pedal: EV-1-WL
Wireless Foot Switch: FS-1-WL
Carrying Bag: CB-BM-S
Size and Weight
Dimensions: 307 (W) x 149 (D) x 56 (H) mm
12-1/8 (W) x 5-7/8 (D) x 2-1/4 (H) inches
Maximum height: 307 (W) x 149 (D) x 73 (H) mm
12-1/8 (W) x 5-7/8 (D) x 2-7/8 (H) inches
Weight: 1.2 kg
2 lbs 11 oz
*0 dBu = 0.775 Vrms

Video Library

A Few Minutes with Arcane Roots

From early influences and formative years to new music and technology, Arcane Roots reflect on the journey so far and what's still to come.Read more…

Behind the Board: Sara Ferrero with Pet Shop Boys and Maribou State

Sara Ferrero on touring with Pet Shop Boys and Maribou State, essential Roland and BOSS gear, and how she became an in-demand music tech.Read more…

Getting Started with the BOSS GX-1 and GX-1B

A practical guide to shaping sounds and getting creative with BOSS’s most portable GX-series processors yet.Read more…

Getting Started with the BOSS GX-10 Guitar Effects Processor

Explore the GX-10’s sound-building workflow, connections, and creative tools.Read more…

Downloads

Updates & Drivers

Support

If you have questions about operating your BOSS product, please check our Knowledge Base for answers to the most common questions.
You can also contact our Product Support department by phone or email.
In addition, we have a library of Owner’s Manuals and Support Documents that you can download and reference.