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? How do I update the firmware on a Mustang GT or Rumble digital amplifier? Are there foreign-language translations of the Mustang GT Expanded Owner’s Manual? How do I setup WiFi connectivity on my Rumble digital amp? What if I don't have a smartphone for Tone? Can I get presets from the web?