Guitar Effects Processor


Under the hood of the shiny GT-6 is BOSS' most advanced COSM modeling engine ever—complete with 30 amp models, plus all-new COSM Distortion/Overdrive Pedal Modeling and Wah Modeling. Add to this all-new effects like "Uni-V" and "De-Fretter," plus superb 24-bit sound quality, and you've got the most powerful floor-based multiple effects processor in BOSS history.

BOSS’ Most Advanced COSM Modeling

Rather than adding a few bells and whistles, BOSS completely refined the GT-6’s COSM engine to include 30 of the finest amp and speaker cabinet models ever—from vintage classics to modern screamers. Then BOSS took the GT-6 even further by offering killer new Overdrive/Distortion Modeling (15 types of classic distortion and overdrive pedals) and COSM Wah Modeling (5 types of vintage and modern wah pedals).

New “Uni-V” and “De-Fretter” Effects

In addition to ultra high-quality BOSS effects like chorus, delay, reverb, phasing, flanging, tremolo, pitch shifting, Slicer, Acoustic Simulator and more, the GT-6 is the first BOSS unit to offer new Uni-V and De-Fretter effects, which provide cool phase shifting-vibrato effects and simulate the sound of a “fretless” guitar, respectively.

Intuitive Operation and Customize Feature

Even with all the great presets, chances are you’ll be anxious to create your own signature tones. To this end, the GT-6 offers 15 very tweakable knobs set up to control the Amp/Speaker models, Overdrive/Distortion, and other primary effects. And with the GT-6’s expanded Customize function, you can build your own amp and speaker models, along with distortion units and wah pedals. There’s never been a more flexible or intuitive guitar processor!

24-bit Sound Quality, Flexible Outputs

Why did BOSS build the GT-6 with 24-bit A-D and D-A converters? Because we wanted our incredible effects and COSM models to sound their absolute best. So in addition to being extremely quiet, the GT-6 gives you phenomenal dynamic range; a coaxial digital output is provided for recording. And with eight output options including the classic Roland JC-120, plus cool combos, amp stacks, effect loops and more, you won’t find a more complete pedalboard than the shiny GT-6.

AD Conversion
24-bit + AF Method*
DA Conversion
Sampling Frequency
Program Memories
340: 140(User) + 200(Preset)
Nominal Input Level
INPUT: -10dBu
RETURN: -10dBu
Input Impedance
INPUT: 1M ohms
RETURN: 220k ohms
Nominal Output Level
SEND: -10dBu
Output Impedance
OUTPUT: 2k ohms
SEND: 2k ohms
Digital Output
Dynamic Range
100dB or greater (IHF-A)
Input Jack
Output Jacks L (MONO)/R
Phones Jack
Send Jack
Return Jack
Digital Out Connector (coaxial)
Sub EXP Pedal/Sub CTL Pedal 1,2 Jack
MIDI connectors IN/OUT
AC Adaptor Jack
Power Supply
AC 14V: Supply AC Adaptor (BOSS BRC Series)
Current Draw
AC Adaptor (BRC Series)
Size and Weight
515 mm
20-5/16 inches
261 mm
10-5/16 inches
75 mm
3 inches
4.7 kg
10 lbs. 6 oz.
* 0 dBu = 0.775 Vrms * AF method (Adaptive Focus method) This is a proprietary method from Roland that vastly improves the signal-to-noise (S/N) ratio of the A/D and D/A converters.
*The specifications are subject to change without notice.