Question I have a 25K expression pedal hooked up to my Triple Delay, but it only effects the delay that is selected with the delay 1/2/3 selector toggle switch. Is this normal  Answer Yes, this is how the pedal was designed.  While Flashback Triple Delay has three Delay Engines, the Expression pedal will only control the parameters for the Delay Engine selected with the Delay 1/2/3 selector switch.