so i found out the Fender Supersonic Fx Loop is guilty of being rather noisy with some pedals but im trying to figure out how to solve the issue:

modulation FX in the loop works great, but any of my BOSS reverb or delays all create weird buzz, even hooked them to a power conditioner that didnt solve it. the reverb is more buzzy than the gigadelay but the gigadelay hisses with faint buzz.

seems to only be delay/reverb effects...