Quote:
You can use a normal 9v supply on the Holy Grail +. But I wouldn’t daisy chain it. The Holy Grail +, SMMH, and other digital 9.6V pedals of EHX’s don’t like to be daisy chained and can create a high pitched whining noise in your signal.
Hi, sorry for unearthing an old post.
I have this exact issue with the whine using a OneSpot and came on here to try and find a solution.
At the time (more than a year ago) I had put the HGP on it’s own power supply. Unfortunately after experiencing random volume loss I was told that I had a phase issue stemming from the HGP being on another supply.
Disappointed that this pedal has this silly whine when used on a pretty standard pedalboard setup with the onespot. Will probably get rid of it, unless you kind folks have any advice.
Thanks
