Amp Factory

GP-20: Amp Factory


The GP-20 Amp Factory™ offers a variety of incredible COSM® Guitar Amp models designed for live performance or recording—22 in all. Thanks to its simple knob-based controls, two-channel operation, and ability to model the best amps ever made, the brilliant GP-20 is a tonal monster for live or studio applications.

  • COSM Amp Modeling pedal with 22 killer amp models
  • 2-channel operation (Manual/Memory) plus Bypass turns any guitar amp into a 3-channel amp
  • Output Select switch for connection to guitar amps or line-level systems
  • 5 onboard speaker cabinet simulations plus digital output for recording


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In addition, we have a library of Updates and Drivers and Support Documents that you can download and reference. If Support Documents are available for this product, they will be listed below.

Product Manuals

Support Documents