Home › Forums › Products › Stompboxes › H90 Power draw & routing › Reply To: H90 Power draw & routing December 12, 2022 at 4:29 pm #167609 joecozziModeratorEventide Staff That is correct. If you are using a power supply other than Eventide or Coiks, a reverse polarity adapter with a 2.5mm end going into the H90 is required.
