BOSS GT-1 Guitar Amp Modeller ...

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BOSS GT-1 Guitar Amp Modeller and Multi Effects Processor Pedal

RRP £235.00 Save £36.00


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Manufacturer's ID: GT-1

What we say:

Inside a sturdy metal box not much bigger than the average adult's foot, Boss have crammed an Aladdin's cave full of tones, amps sims and effects, all ready to use and all extremely impressive sounding!

The GT-1 crams in so much besides great tones, though: you get a treadle pedal for expression, a Control switch for extra functionality and real-time control, a USB output for direct connecting to a computer and a 32 second phrase looper too. Phew! That is a lot of content!

This is all managed with the minimum of knobs and switches to keep things simple and easy. Instead, players can use a dedicated software editor and BOSS's Tone Central to upload, write, swap and download patches with a large online community. The sounds already onboard are all super-high quality: indeed they should be; this is a fully paid up member of the GT family, BOSS's powerhouse flagship multi-effect processor line.

With it's small footprint and ability to run on either an adapter or batteries, the GT-1 will go with you unnoticed inside your gig bag and give you tones from tasteful to monstrous when you reach the gig.


A streamlined interface enables quick and intuitive sound creation, while an assignable control switch and expression pedal provide dynamic real-time effects adjustment. And by connecting to BOSS Tone Central, you can download free pro patches, editing software, and more. Equally suited for beginners, weekend warriors, and traveling players, the GT-1 packs premium sound in a compact and rugged package.


  • Flagship-class BOSS sound engine squeezed into a light and compact floor unit 
  • Modern design with no hard edges enables safe transport in a guitar bag
  • Easy Select and Easy Edit functions for quickly choosing and tweaking patches
  • Four AA batteries provide up to seven hours of playing time for busking and mobile gigs
  • Onboard control switch and expression pedal; footswitch/expression pedal jack and USB
  • Download ready-to-play pro patches for free at BOSS Tone Central

Exceptional Sound
Thanks to its flagship-class GT sound engine, the GT-1 provides tone quality and sound-shaping ability that far exceeds typical compact multi-effects. A history of BOSS processing is at your fingers, from classics such as the OD-1 Overdrive to modern effects powered by innovative MDP technology. There’s a huge selection of COSM amp tones on tap too, including vintage legends and BOSS original amps optimized for ideal tone and response. Specialized effects like Acoustic Simulator, Guitar Simulator, and others provide numerous tonal options, and there’s even a looper to enhance your practice sessions and stage performances.

Portable Tone Partner
The GT-1 was designed for musicians on the move. It’s surprisingly lightweight and compact, yet still delivers the rugged durability that BOSS is famous for. The modern design is easy to slip in and out of a guitar bag’s accessory compartment, with no worries of hard edges causing damage to your axe. AC or battery power provides flexibility for any performing situation, and up to seven hours of battery life is available for street performing and other mobile gigs.

Easy Patch Selection and Sound Creation
With the GT-1, it’s simple to find fantastic tones for your style, and just as simple to customize them to taste. Beginners can get great sounds right away, while more experienced players will appreciate how quick and intuitive it is to adjust sounds. The Easy Select function allows you to choose patches by genre, distortion, or effect type, while Easy Edit lets you tweak drive, modulation, and echo tones to perfection with little effort. Dedicated panel buttons provide quick on/off switches for effect groups, and also unlock deep-dive parameters for microscopic fine-tuning.

BOSS Tone Central and BOSS Tone Studio
At BOSS Tone Central, you’ll find tons of free patch collections for playing all types of music with the GT-1. Created by pro guitarists, 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-1, as well as integrated access to all the patch collections at BOSS Tone Central.

Maximum Control in a Small Space
The GT-1’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, and various effects parameters. If you crave more control, there’s even 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-1’s USB jack lets you record and re-amp tones with your favorite DAW.

-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

108 types

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

DOWN switch, UP switch CTL1 switch
EASY SELECT button, EASY EDIT button, FX1/COMP 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

Graphic 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
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.

305 (W) x 152 (D) x 56 (H) mm
12-1/16 (W) x 6 (D) x 2-1/4 (H) inches
Maximum height:
305 (W) x 152 (D) x 74 (H) mm
12-1/16 (W) x 6 (D) x 2-15/16 (H) inches

-Weight (including battery)
1.3 kg
2 lbs 14 oz

Owner's manual
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

* 0 dBu = 0.775 Vrms

Customer reviews

Overall Rating 4.8/5 (25 reviews)

Great versatile device. Didn't give it 5 stars as programming it with the small screen, knobs and buttons was very complex. However, much easier to hook it up to the computer and use the BOSS tone studio

Lynne M. - 16/8/2023

great effects pedal for the price, cant beat Boos sounds

Denis M. - 30/7/2023

Excellent product for the price.

PAUL N. - 23/6/2023

Duncan C. - 19/6/2023

Excellent product just what I needed

Paul L. - 8/4/2022

Excellent and very fun to play

Robbie M. - 27/3/2022

Very neat piece of equipment... the battery option is really helpful... the sounds are fantastic... typical Boss but all packed into a small unit. for £180. Two things though I wish it had: 1. Bluetooth connectivity and 2. USB-C.

Ian H. - 7/12/2021

It took me a while to learn how to create and save my own patches but I once I download the ToneStudio software I did everything via my computer, it's so much easier. Sounds great!

Craig M. - 22/10/2021

There's a good range of effects to play with

tony c. - 29/1/2021

great pedal ,with plenty of free patches to down load from Tone Central. Not to technical ,very easy to use .Well happy

derek b. - 8/6/2020

James M. - 13/5/2020

This seems a very good pedal, however, I am still getting to grips with it fully, so my rating is effectively an "ongoing" assessment.

david m. - 17/1/2019

This seems a very good pedal, however, I am still getting to grips with it fully, so my rating is effectively an "ongoing" assessment.

david m. - 17/1/2019

Our son is very happy with his guitar pedal...

Andy W. - 27/12/2018

Alison C. - 13/12/2018

Excellent, just a shame it doesn't come with a UK power supply

Jeffry T. - 8/11/2018

They were really ace as sellin and they price matched deffo use them again

Tracy E. - 2/8/2018

Stephanie C. - 5/6/2018

Does what it's meant to do...

Mark S. - 5/5/2018

Excellent piece of equipment which can be pre programmed using Boss Central online patches. Can also be totally customised to suit individual player requirements, has a built in looper which is simple to work. All round good machine!

Adam Q. - 27/2/2018

Great bit of kit. Not the most amazing quality but it is digital and versatile and well equipped. Not many other brands can match..

Toru T. - 22/2/2018

Kieran O. - 20/2/2018

Extremely good Sound/Design/Value for money

John D. - 12/1/2018

Very easy price of kit to use. However, not being a computer geek, it took me a while downloading the software so I could use it on my Mac. But now I?ve done it, it?s a seriously enjoyable bit of hardware. I only play at home so can?t comment on any other usage. Would deffo recommend it!!

Callum D. - 28/9/2017

Great effect pedal. Thanks

David G. - 18/4/2017

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