Boss Boss GT-1B Bass Effects Processor

Code: Boss GT-1B Bass Effects Processor
  • £186.89
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Boss  GT-1B Bass Effects Processor

The Boss Bass Effects Processor is the perfect choice for bassists wanting a variety of effects in one unit. This versatile processor allows players to achieve a selection of pro-level amps and effects in a light, compact unit that can easily fit into any instrument bag. Players can easily shape their sound and select any function using the onboard control switches and expression pedal. The easy-to-use interface also features colourful backlights, making it ideal for dark environments. The Boss Bass Effects Processor can also run on four AA batteries, for added effects when mains power is not available. This unit is the perfect choice for players of all levels, and ideal for the gigging bassist who requires handsfree operation.

Must Have Accessory for the Gigging Bassist

The Boss Bass Effects Processor is equipped BOSS’s most advanced sound engine, and is especially made for bass guitarists. Packed with top-of-the-line sound tools, players can easily tailor their sound at the touch of a button. This versatile effects processor is equipped with a wide variety of preamps, along with effects such as a limiter, distortion and expression pedal. If that's not enough, players also have access to a graphic EQ, looper and T-Wah, as well as impact effects including Harmonist, Bass Synth, Defretter and many more.

Portable & Compact

This versatile unit is ideal for bassists on the move, with its ability to run on battery power(or optional AC). Its compact and lightweight structure will easily fit into any gig bag, and its rugged design is perfect for life on the road.

Boss Tone Central

As well as the full range of onboard effects and sounds, players can also benefit from downloading free patch collections via the free Boss Tone Central. Each patch has been especially programmed by top bassists, and can be dialed-in and ready to use. This online facility provides a full featured editor for the Boss Bass Effects Processor, and allows players to add extra effects to their performances.


  • Flagship-class BOSS sound engine specially tuned for bass guitar
  • Compact design enables safe transport in an instrument bag
  • Pro-level amps and effects in a light, compact floor unit
  • Easy Select and Easy Edit functions for quickly choosing and tweaking patches
  • Includes advanced MDP effects for maximum musical expression
  • Colourful interface is perfect for badly lit environments
  • 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 (to be available in September 2017)


  • Sampling Frequency: 44.1 kHz
  • AD Conversion: 24 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
  • 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: Display: Graphic LCD (132 x 32 dots, backlit LCD)
    • OUTPUT (L/MONO, R): 10 k ohms or greater
    • PHONES: 44 ohms or greater
  • Connectors:Power Supply: Alkaline battery (AA, LR6) x 4, AC adaptor (sold separately)
    • 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
  • Current Draw: 200 mA
  • Expected battery life: 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 (12-1/16 inches)
  • Depth: 152 mm (6 inches)
  • Height: 56 mm (2-1/4 inches)
  • Maximum height: 74 mm (2-15/16 inches)
  • Weight (including battery) : 1.3 kg (2 lbs 14 oz)

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