Home › Forums › Products › Stompboxes › H90 Power draw & routing › Reply To: H90 Power draw & routing December 11, 2022 at 4:29 pm #167581 joecozziModeratorEventide Staff If you’re using one 9V 500mA outlet, my guess is that you’re under powering the H90. You need a current doubler cable and combine the 500mA outlets.
