Question: How do I switch on Mic Control on my stompbox pedal, now that there is no button for it (Harmony Singer 2, Mic Mechanic 2, Duplicator, Critical Mass, Talkbox Synth) Answer: Hold down the footswitch while powering the pedal up. Note: Mic Control should be switched off if you are using a condenser microphone, to avoid switching effects on and off at the wrong times.