Where can I get the manual for the Mustang LT amplifier? You can view and download the manual right here! Related articles How do I update the firmware on my Mustang LT or Rumble LT? Where can I get a copy of the Mustang LT Quick Start Guide? How to update the firmware on a Mustang GTX, GT or Rumble amplifier How do I backup and restore the presets on my Mustang LT or Rumble LT amplifier? Are there foreign-language translations of the Mustang LT Owner’s Manual?