Home › Forums › Products › Stompboxes › H9 Pre/Post and GCX Switcher › Reply To: H9 Pre/Post and GCX Switcher December 10, 2015 at 4:09 pm #141785 nickroseModeratorEventide Staff If you are in Pre/Post mode, set to Post, channel 1 does not need to be connected. If it is, it will be passed through unchanged (dry). Not sure why you get the signal light behavior you describe.
