Reply To: H9 – tuner and aux switch

[gkellum]

I'm not 100% sure what you're asking. There is a pedal function called "Toggle Tuner" which you can find in H9 Control under Pedal Settings / Aux Switch Mappings, which toggles the tuner on and off again.  You can assign it to a single button Aux switch.  Pressing the aux switch once will turn the tuner on, and pressing it again will turn the tuner off.