If I have my guitar, amp (either tube or SS) and only a volume pedal, would it sound any different weather the volume pedal is at the amp input vs the effects loop of the amp? If so, what is the correct (prefered?) setup and why? For the most part, I'm only concerned with using a clean channel. My ears can't hear minor changes as they use to and, technically speaking, I would think it shouldn't matter.... right?