BOSS GT-1B Bass Effects Processor

The GT-1B gives bass players a massive range of pro tone-shaping power in a small and robust package. Backed by BOSS’s flagship sound engine, you have full access to a huge selection of bass-optimized amps and effects for stage and studio playing. The streamlined interface lets you dial in sounds fast, while the onboard control switch and expression pedal enable you to adjust multiple effects in real time. And by connecting to BOSS TONE CENTRAL, you can download new patches, editing software, and more. Compact, rugged, and battery powered, the GT-1B is the ultimate mobile tone companion for every bassist.

Flagship-class BOSS sound engine specially tuned for bass
Pro-level amps and effects in a light, compact floor unit
Essential tools on board for optimizing your core bass tone
Includes advanced MDP effects for maximum musical expression
Modern design with no hard edges enables safe transport in an instrument bag
Easy Select and Easy Edit functions for quickly choosing and tweaking patches
Four AA batteries provide approximately seven hours of mobile playing time
Onboard control switch and expression pedal; footswitch/expression pedal jack and USB
Download pro patches and editor software for free at BOSS Tone Central

Flagship Tone Tools for Bass

Equipped with a bass-tuned version of BOSS’s most advanced sound engine, the GT-1B is absolutely packed with top-quality sound tools. A wide range of preamps are available for shaping your core tone, including updated favorites from the GT-10B and two all-new models. Premium MDP effects like limiter and distortion feature advanced BOSS tech to maintain your instrument’s character and response, enabling free-flowing musical expression. Graphic EQ, T-Wah, and other essentials are on hand too, plus impact effects such as Harmonist, Bass Synth, Defretter, and more. There’s also a complete array of mod, delay, and reverb effects, and even a looper for jamming and on-the-fly creativity.

Mobile Powerhouse

The GT-1B is designed for bassists on the move. It’s surprisingly lightweight and compact, making it ideal for tight stage setups and situations where you need to travel light. The rugged modern design is easy to slip in the accessory compartment of a bass bag, with no worries of hard edges causing damage to your instrument. AC or battery power provides flexibility for any performing situation, so you can always take your tone with you everywhere you play.

Sound Creation Made Easy

With the GT-1B’s intuitive interface, it’s simple to build sounds and fine-tune parameters, even if you’re new to multi-effects. Dedicated buttons provide instant editing access to each effect category, which you can adjust straight away via three panel knobs. The buttons also function as on/off switches, and feature status indicators that let you see which categories are enabled at a glance. Easy Select and Easy Edit functions streamline patch creation even more, allowing beginners and pros alike to achieve polished multi-effects sounds with just a few tweaks.

BOSS Tone Central and BOSS Tone Studio

At BOSS Tone Central, you’ll find a wide selection of free patch collections for the GT-1B. Programmed by top bassists, these patches are dialed-in and ready to use, and make great starting points for advanced players who like to create their own custom sounds. The free BOSS Tone Studio software provides a full-featured editor/librarian for the GT-1B, as well as integrated access to all the patch collections at BOSS Tone Central.

Pro Control in a Compact Space

The GT-1B’s three footswitches are smartly designed to provide patch selection, tuner access, looper control, and more in a minimal footprint. The dedicated CTL1 switch is freely assignable to functions like tap tempo, effects on/off, and numerous others, while the expression pedal and toe switch are assignable to volume, wah, pitch shift, and various effects parameters. If you crave even more control, there’s a jack for connecting up to two external footswitches or an expression pedal. And in addition to providing access to BOSS Tone Central and BOSS Tone Studio, the GT-1B’s USB jack lets you record tones directly to your favorite DAW.

Sampling Frequency	44.1 kHz
AD Conversion	24 bits + AF method
DA Conversion	24 bits
Effects	90 types
Patches	99 (User) + 99 (Preset)
Phrase Loop	32 sec.
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
Controls	DOWN switch, UP switch CTL1 switch
	EASY SELECT button, EASY EDIT button, FX1/LIMITER button, OD/DS button, PREAMP button, FX2/MOD button, DELAY button, REVERB button, MEMORY EDIT button, EXIT button, ENTER button, MENU button
	1 knob, 2 knob, 3 knob Expression pedal
DisplayGraphic	LCD (132 x 32 dots, backlit LCD)
Connectors	INPUT jack, OUTPUT (L/MONO, R) jacks: 1/4-inch phone type
	CTL2, 3/EXP2 jack: 1/4-inch TRS phone type
	AUX IN jack: Stereo miniature phone type
	USB COMPUTER port: USB type B
	DC IN jack
Power Supply	Alkaline battery (AA, LR6) x 4, AC adaptor (sold separately)
Current Draw	200 mA
Expected battery life under continuous use	Alkaline: Approx. 7 hours
	* These figures will vary depending on the actual conditions of use.
Accessories	Owner's manual
	Leaflet "USING THE UNIT SAFELY"
	Alkaline battery (AA, LR6) x 4
Width	305 mm
Depth	152 mm
Height	56 mm
Maximum height	74 mm
Weight (including battery)	1.3 kg