The Orange FS-2 Footswitch has been designed to work with their guitar amps. This is the dual button version.

Orange FS-2 Footswitch for guitar amps

This is the foot switch to use if you have a Dual Terror, AD30, Rocker 30, Rockerverb 50 and 100, Thunderverb 50 and 200, OR100H, Crush Pro and TH Series guitar amp. The Orange FS-2 Footswitch has two separate jack sockets at the back. It is also compatible with a number if other amplifiers. It has a tough, rugged metal construction designed to take abuse.