Boss GX-1B

GX-1B: the new portable generation in the lineage of the GT-1B

Designed as the modern successor to the GT-1B, the GX-1B carries forward BOSS's "ready to play anywhere" DNA, adding a more direct interface and a current processing platform. The AIRD technology stands out by offering a more organic playing feel than a simple amp simulation: the attack, low-end behavior, and dynamics respond naturally, helping you find amp landmarks even when using headphones or DI. In the lineup, it targets bassists who want a complete, compact, and quick-to-grasp multi-effects unit without sacrificing studio-quality audio.

A multi-effects for mobile bassists: home, rehearsals, studio, live

The BOSS GX-1B aims wide: it suits both beginner bassists who want to explore "pro" sounds without getting lost in menus, and seasoned musicians needing an ultra-practical pedalboard for gigs, sessions, and last-minute plans. At home, it becomes a work companion thanks to practice features (passage looping, speed variations, metronome, rhythms) and headphone output. In the studio, USB-C simplifies direct recording, and adding cabinet IRs allows refining realism and mix integration. On stage, the ergonomics (switches, expression pedal, assignments) enable clean and fast changes, from punchy funk to muscular rock, modern pop to precise metal, up to more ambient/downtempo textures.

Technical specifications

Effects	Multi-effects	Use	electric guitar
Format	Pedalboard	Color	Blue
Type	sector

Technology	AIRD (amp modeling and dynamic response)	EXP1 Expression Pedal	with switch at the end of the pedal travel + dedicated EXP1 switch (assignable)
Bass Amp Types	16	External Control	via CTL2,3/EXP2 input (up to two footswitches or one expression pedal)
BOSS Effects	more than 130 effects (135 types), 8 simultaneous blocks	Wireless Control Compatibility	FS-1-WL, EV-1-WL (optional)
AD Conversion	24-bit + AF method	Instrument input	6.35 mm jack
DA Conversion	32-bit	Outputs	2 x 6.35 mm jacks (L/Mono, R)
Audio Processing	32-bit floating-point	Headphone output	3.5 mm mini-jack
Sampling Frequency	48 kHz	CTL2,3/EXP2 input	6.35 mm TRS jack
Cabinet IR	WAV format support	USB COMPUTER Port	USB-C
Phrase Looper	up to 38 s (mono) / 19 s (stereo)	Bluetooth	audio and MIDI
Tuner	detection accuracy +/- 0.1 cent	Nominal input level	-10 dBu
Memories	99 factory presets + 99 user memories	Maximum input level	+7 dBu
Display	color graphic LCD (320 x 240)	Input impedance	1 Mohm
Effect Buttons	hexagonal, direct access by category	Nominal output level	OUTPUT (L/Mono, R) -10 dBu ; PHONES -10 dBu
Gear Suite Function	quick settings by amp/effect	Output impedance	OUTPUT (L/Mono, R) 1 kohm ; PHONES 44 ohms
Livesets	sound bank organization and loading	Recommended load impedance	OUTPUT (L/Mono, R) 10 kohms or more ; PHONES 44 ohms or more
Built-in Footswitches	3