Where can I get the expanded manual for the Mustang GT amplifier? You can view and download the manual right here! Related articles Where can I get the expanded manual for the Mustang GTX amplifier? Where can I get a copy of the Mustang GT Quick Start Guide? Fender® Guitar Amplifier Owner's Manuals How do I use the MGT-4 4-Button footswitch with the Mustang GT amps? How to update the firmware on a Mustang GTX, GT or Rumble amplifier