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It depends on the class of amplifier, as randy-11 stated. With typical
class AB amp music power is very low, being only a few percent of peak
power (unless you listen to sine waves).
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What about for an amp like my Krell FPB 400-cx, which I believe is class A? Supposedly, you are supposed to have a 20 amp line, but I just plugged it into a regular outlet and it seems to work fine. I do have pretty efficient speakers, however. Considering that I don't play music or movies all that loud, will a 20 amp line make any discernible difference?
What about for an amp like my Krell FPB 400-cx, which I believe is class A? Supposedly, you are supposed to have a 20 amp line, but I just plugged it into a regular outlet and it seems to work fine. I do have pretty efficient speakers, however. Considering that I don't play music or movies all that loud, will a 20 amp line make any discernible difference?