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Stock code: BOSGT1B

Our Price
For only $39.90, include the
Rocksure Performance Warranty
More information

Stock Availability

Auckland Region North Island South Island Warehouse

Include Rocksure Performance Warranty

For only $39.90, include the
Rocksure Performance Warranty
More information

Apply for Finance Now on $399.00

Quick weekly payments on $399.00

12 mths $10.08
24 mths $5.67
36 mths $4.21
Interest Rate: 19.95%
Establishment Fee: $59.00
Monthly Service Fee: $1.80
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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


Sampling Frequency44.1 kHz

AD Conversion24 bits + AF method

* AF method (Adaptive Focus method) is a proprietary method

from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD and DA converters.

DA Conversion 24 bits

Effects 90 types

Patches99 (User) + 99 (Preset)

Phrase Loop 32 sec

Nominal Input LevelINPUT: -10 dBu,

AUX IN: -20 dBu

Maximum Input LevelINPUT: +7 dBu,

AUX IN: 0 dBuInput Impedance

INPUT: 1 M ohm,

AUX IN: 27 k ohms

Nominal Output LevelOUTPUT (L/MONO, R): -10 dBu, PHONES: -10 dBu

Output ImpedanceOUTPUT (L/MONO, R): 1 k ohm, PHONES: 44 ohms

Recommended Load ImpedanceOUTPUT (L/MONO, R): 10 k ohms or greater, PHONES: 44 ohms or greater


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)


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 SupplyAlkaline battery (AA, LR6) x 4, AC adaptor (sold separately)

Current Draw200 mA

Expected battery life under continuous useAlkaline: Approx. 7 hours * These figures will vary depending on the actual conditions of use.

AccessoriesOwner's manual Leaflet "USING THE UNIT SAFELY" Alkaline battery (AA, LR6) x 4

Options (sold separately)AC adaptor: PSA series Footswitch: FS-5U, FS-5L, FS-6, FS-7 Expression Pedal: FV-500L, FV-500H, Roland EV-5

Size and Weight

Width305 mm 12-1/16 inches

Depth152 mm 6 inches

Height56 mm 2-1/4 inches

Maximum height74 mm 2-15/16 inches

Weight (including battery)1.3 kg 2 lbs 14 oz