Are there foreign-language translations of the Rumble digital amp Expanded Owner’s Manual? Yes. Click on the language below for the translated manual. Spanish French Italian German Polish Czech Slovakian Slovene Japanese Related articles Where can I get the expanded manual for the Rumble digital amplifier? Where can I get a copy of the Rumble Stage/Studio v2.0 Manual Addendum? Rumble Stage/Studio Firmware Version Release Notes About Mustang LT & Rumble LT Amplifiers How do I update the firmware on my Mustang LT or Rumble LT?