Home › Forums › Products › Stompboxes › is it possible to use one h9 in the effects loop of two amps at the same time? › Reply To: is it possible to use one h9 in the effects loop of two amps at the same time? February 9, 2015 at 3:30 pm #127512 nickroseModeratorEventide Staff It's probably safe enough, but you have a risk of ground loops, giving extra hum and noise.
