Home › Forums › Products › Stompboxes › Unable to update H9’s › Reply To: Unable to update H9’s October 25, 2016 at 4:39 pm #144735 lmlyonsParticipant Nick, I forgot to add – they are powered using the Eventide supplied power supply. I have those plugged into a power line conditioner. It is currently registering 121 volts. Take care Lance
