Home › Forums › Products › Stompboxes › Two H9 pedals with one footswich › Reply To: Two H9 pedals with one footswich May 7, 2014 at 4:37 pm #125881 nickroseModeratorEventide Staff Electrically you can, but there is a risk of ground loops. If there is an increase in hum when both are connected you will need to have a tech look at your setup.
