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Boss GT-8 - floor-based mega processor

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Availability: Sold out

Sku: INS_210806_00061

Vendor: BOSS

Double your power with the BOSS GT-8 floor-based mega processor.

Loaded with twin COSM modeling engines, it brings unprecedented performance and tonal control to the stage and studio. The Dual COSM amp section provides two discrete amp channels; you can layer and manipulate each engine independently to create wildly expressive sounds. Thanks to the Solo Switch function, lead sounds can be immediately activated — perfect for ripping through the mix. BOSS’s mega-popular GT-6 was a smash hit with guitarists, now the GT-8 is the go-to box for gigging and recording guitarists alike.

  • BOSS’s most powerful floor multi-effects processor
  • Dual COSM Preamp with Solo Mode for instant tone boost
  • Control amp channels and effects by picking dynamics
  • Independent effect loop
  • Effects can be in any order

 GT8 Brochure

Listen to the GT-8 In action

 Dyna Lead/Clean

  • In this patch, amp models are being switched with picking dynamic

Fat Stereo Lead

  • This is a Dual Left/Right patch that demonstrates the rich, massive tone of the GT-8.

Wave Synth

  • Here's the GT-8's monophonic synth, which tracks perfectly while conjuring up H. Geiger-type Aliens.

Gut Bust

  • GT-8 Demo Song featuring Paul Hanson.


  • In this patch, the CTL pedal is being used to switch between a Warm Clean amp model and the R-fier Lead model.

Crunch<>Drive Exp

  • Here, the Expression Pedal is being used to fade back and forth between two different amp models.
Dual COSM Amps