Supro SF2 Tremolo and Reverb Footswitch SF2 Tremolo/Reverb Dual Footswitch Dual Footswitch Tremolo and Reverb on/off remote for Supro combo amps Requires TRS cable (not included) Dual Footswitch Tremolo and Reverb on/off remote for Supro combo amps Requires TRS cable (not included)