Hi all. I've built the previous design boneyard and i had no problems with squeal/oscillation . I've just built the 2012 version and i'm getting the squeal on the high gain channel. I've tried it after a klon clone I have and the squeal goes so i'll build a klon buffer into the circuit as described by others already. That should sort it.
The thing i'd like advice about is the clean boost. I built it onto the 2nd 3pdt switch as per the build doc but when i engage it there is a very audible pop. Is there any way i can get rid of this? if i need a PDR to get rid of it where do i fit it? (I already have a 2.2M installed on the actual PCB as per the doc.)
Did anyone else experience this? Any advice as to how to get rid of the pop will be greatly appreciated.
Check out this thread:
http://www.madbeanpedals.com/forum/index.php?topic=4946.0
That's brilliant. Thank you ever so much. Hopefully it'll work ;-)