Advanced COSM amps that model vintage classics and deliver highly expressive tones

Dual LCDs and panel knobs offer simple and intuitive operation, with direct access to every parameter

EZ Tone feature with graphical Tone Grid for constructing new patches, plus Amp Customize and OD/DS Customize functions for easily creating original sounds

Unique Accel pedal provides simultaneous control of multiple parameters

Powerful A/B Channel Divider for creating dual amp and effects chains that can be blended together or toggled by footswitch, frequency, or picking strength 

GT-100 Version 2.0—Newly Added Features

Two new amp models: BGNR UB Metal and ORNG Rock Reverb

New MDP effects powered by innovative BOSS technology: Tera Echo, Overtone, and A-DIST

Rotary 2 and Acoustic Guitar Simulator effects types added

Monophonic guitar-to-MIDI conversion from normal 1/4-inch guitar input

Enhanced USB audio/MIDI interface with multi-channel operation for flexible recording and efficient re-amping

Support for BOSS TONE STUDIO editor/librarian for Mac/Windows and new GT-100 Version 2.0 patches, available for free at bosstonecentral.com

Version 2.0 software available as a free download for all GT-100 owners

Advanced COSM Amps: Beyond Vintage

With its next-generation COSM processor, the GT-100 ushers in a new era of expression and sonic capabilities. Recreating the meticulous details of vintage amps and how they behave, the GT-100 excels in not only cloning classic amps, but in creating a new world of unimagined tones as well. The Amp Customize function lets you mutate classic amps beyond reality to construct completely new, unimagined sounds!

Simple and Intuitive User Interface

The GT-100’s unique dual-LCD and eight-knob user interface provides fast access and intuitive control. There are no menus to navigate; every function is instantly available. The tone-customizing functionality has been improved as well—all patches, amps, and overdrives/distortions can be created from scratch and/or customized with the friendly graphical Tone Grid.

New Tonal Possibilities with the Accel Pedal

A new dimension of expression is available with the Accel pedal, which enables control of multiple parameters simultaneously, as well as time-variant effects such as Feedbacker, S-Bend, Twist, and more. Experiment with creative combinations of parameters and bring dynamic new sounds to your performances by interacting in real time with this cool pedal.

A/B Channel Divider Function

Another notable feature in the GT-100 is the versatile A/B Channel Divider. This lets you assign different amps and effects to each channel, either for blending together or switching between them with a footswitch. Going even further, you also have the ability to switch channels by playing strength or frequency range. With each channel capable of driving its own effects and amps settings, the range of tones gets wider and wilder! You can assign smooth, mild lead tones to the mid-to-high pitches, for example, and heavy, cutting tones to the lower notes—the tonal possibilities are endless.

Edit and Organize Sounds with BOSS TONE STUDIO

Available as a free download for Mac or Windows, BOSS TONE STUDIO gives you an intuitive graphical interface for creating and editing GT-100* effects patches from your computer via USB. The software also makes it easy to organize and archive patches, and to load them as needed for different gigs and recording sessions. If your computer has Internet access, BOSS TONE STUDIO provides an integrated connection to the BOSS TONE CENTRAL website, where you can preview and download free gig-ready patches created by top guitar pros directly into the GT-100.

*GT-100 Version 2.0 software is required for compatibility with BOSS TONE STUDIO.

BOSS TONE CENTRAL: Your Web Home for Free Patches, Instructional Vids, Artist Tips, and More

BOSS TONE CENTRAL is the ultimate destination for all players that use BOSS products. Evolving to include a growing selection of BOSS gear, this site gives you access to lots of premium content, including demo videos and free patches created by famous guitarists, touring pros, and session players. Check back often for new patches, how-to videos, artist interviews, and much more. If you love BOSS effects, BOSS TONE CENTRAL is the place to be!

AD Conversion24 bits + AF method

*AF method (Adaptive Focus method) is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (S/N) ratio of the A/D and D/A converters.DA Conversion24 bitsSampling Rate44.1 kHzProgram Memories400: 200 (User) + 200 (Preset)Effect TypeCOMP, PREAMP(*1), OD/DS(*2), EQ, FX1/FX2(*3), DELAY, CHORUS, REVERB, PEDAL FX, NS1/NS2, ACCEL FX

*1 PREAMP
NATURAL CLEAN, FULL RANGE, COMBO CRUNCH, STACK CRUNCH, HiGAIN STACK, POWER DRIVE, EXTREME LEAD, CORE METAL, JC-120, CLEAN TWIN, PRO CRUNCH, TWEED, DELUXE CRUNCH, VO DRIVE, VO LEAD, MATCH DRIVE, BG LEAD, BG DRIVE, MS1959 I, MS1959 I+II, R-FIER VINTAGE, R-FIER MODERN, T-AMP LEAD, SLDN, 5150 DRIVE, BGNR UB METAL*, ORNG ROCK REVERB*, CUSTOM

*2 OD/DS
MID BOOST, CLEAN BOOST, TREBLE BOOST, CRUNCH, NATURAL OD, WARM OD, FAT DS, LEAD DS, METAL DS, OCT FUZZ, A-DIST*, BLUES OD, OD-1, T-SCREAM, TURBO OD, DIST, RAT, GUV DS, DST+, METAL ZONE, '60S FUZZ, MUFF FACE, CUSTOM

*3 FX1/FX2
T.WAH, AUTO WAH, SUB WAH, ADV. COMP, LIMITER, SUB OD/DS, GRAPHIC EQ, PARA EQ, TONE MODIFY, GUITAR SIM., AC.GUITAR SIM*, SLOW GEAR, DEFRETTER, WAVE SYNTH, SITAR SIM., OCTAVE, PITCH SHIFTER, HARMONIST, OVERTONE*, SOUND HOLD, AC. PROCESSOR, PHASER, FLANGER, TREMOLO, ROTARY1, ROTARY2*, UNI-V, PAN, SLICER, VIBRATO, RING MOD., HUMANIZER, 2X2 CHORUS, SUB DELAY, TERA ECHO*

*Newly Added Features (Version 2.0)
A-DIST is available in OD/DS and in SUB OD/DS of FX2.
OVERTONE and TERA ECHO are only available in FX2.Nominal Input LevelINPUT: -10 dBu
RETURN: -10 dBu
AUX IN: -20 dBuInput ImpedanceINPUT: 1 M ohm
RETURN: 100 k ohms
AUX IN: 47 k ohmsNominal Output LevelOUTPUT: -10 dBu/+4 dBu
SEND: -10 dBuOutput ImpedanceOUTPUT: 2 k ohms
SEND: 2 k ohmsDynamic Range100 dB or greater (IHF-A)DisplaysGraphic LCD (132 x 64 dots, backlit LCD) x 2ConnectorsINPUT jack (1/4-inch phone type)
AUX IN jack (Stereo miniature phone type)
OUTPUT L/MONO, R jacks (1/4-inch phone type)
PHONES jack (Stereo 1/4-inch phone type)
EXT LOOP jacks (SEND, RETURN; 1/4-inch phone type)
AMP CONTROL jack (1/4-inch phone type)
SUB CTL1, 2/SUB EXP jack (1/4-inch TRS phone type)
USB port
MIDI connectors (IN, OUT)
DC IN jackPower SupplyDC 9 VCurrent Draw600 mAAccessoriesAC adaptor(PSB-1U + AC Cord Set)
USB Cap
Owner’s ManualOptions (sold separately)Footswitch: FS-5U
Dual Footswitch: FS-6, FS-7
Expression Pedal: FV-500L/500H, EV-30, Roland EV-5
AC adaptor (PSB-1U)

*When purchasing an AC adaptor, be sure to specify the adaptor (from the list that follows) that is designed for the region in which it will be used, and the voltage supplied there.
(PSB-120/PSB-120TW/PSB-230EU/PSB-230UK/PSB-240A)SIZE AND WEIGHTWidth542 mm
21-3/8 inchesDepth271 mm
10-11/16 inchesHeight80 mm
3-3/16 inchesWeight4.8 kg
10 lbs. 10 oz.