Depending how isolated your current line is, you may not notice a difference. If other things are tapping electricity from that same line your amp is plugged into while your listening that creates the possibility of interference that can make its way to your amp. It can be very annoying while its happening, even if its subtle audible differences. Or more so when someones switches something on/off in another room and the amp is sensitive enough. That brief crackle result after interference runs up the line to your amp and becomes audible through your speakers. That used to make me cringe every time it happened. In fact one of my amps might have damage because of it. Not sure but its a hunch, it still has to be looked at.
Can too many components on one outlet affect the sound of an amp?
I am running a few amps, a receiver, tv and a few more components on the same outlet. I am using a power conditioner. My main issue is - I recently noticed that when I'm only running my McIntosh MC275, a pre-amp and a cd player, I seem to be getting better bass compared to having more components on. Is it just my imagination? Or is it possible? Everything is running on a 15 amp circuit.