Re: Should a buffer before fuzz cause hum?
The daisy chain could be a potential source of some noise. Some pedals just need their own isolated power supply.
I would plug one pedal in at a time until you find the culprit.
That said, fuzz pedals are picky. They don’t always play nice with other pedals in the signal chain. Try the buffer in a different spot (after the fuzz) and see if that helps.
I tried a bunch of things
1) I tried plugging different power supplies. It didn't make any difference.
2) Placing the buffer after the fuzz will reduce the hum significantly, but not completely, plus it won't help reducing the tone sucking produced by the wah wah pedal.
3) Unplugging the guitar and leaving just the buffer and the fuzz on helped me noticing some white noise is being added by the buffer, which I didnt feel without the fuzz.
4) Plugging either the fuzz or the buffer (but not both engaged at once) will produce pleasing results. I realize I need the buffer after my Cry Baby and I need it before fuzzing.
I contacted the manufacturer directly and he didnt give me technical explation (impedance, these things). He mentioned it could be either the cables or the fact I'm using an audio interface / reaper, but i'm having abnormal input levels when placing with that configuration, even when I'm not touching the guitar (when buffer AND fuzz are engaged).
Update: I tried my Boss TU-3 in instead of the buffer, so Cry Baby > Tu-3 > 70's fuzz. Helped with the tone, did nothing the buzz. Placing the buffer turns this pedal unplayable. Should I place a noise gate around the buffer?
I swapped the Fuzz 70 with a Boss Turbo distortion with all controls on 12 o'clock, so GUITAR > BUFFER > TURBO DISTORTION > AMP. It's dead silent.