Home › Forums › Products › Stompboxes › Switching on the ‘Wah’ effect › Reply To: Switching on the ‘Wah’ effect August 7, 2019 at 4:11 pm #152477 mferrandMember I have an SP-1. It was not being used so I thought I’d try and modify it. It looks like I need to get a diode any way. I was hoping to dothis with what I had.
