Hi Paris; Your 15 amp outlet has plenty of capacity for your(potential) 20 amp output amplifier. And BTW, my McCormack DNA2 Rev.A (300 wpc 8 Ohm, 600 wpc 4 Ohm, and 1200 wpc 2 Ohm) can source a theorhetical 100 amps, but under practical conditions this would never happen and I plug it into a 20 amp dedicated outlet. And I wouldn't hesitate to use a 15 amp outlet either-- if that's what I had.

I suppose if you set volume at max. your amp could possibly source 20 amps (continuous) of current but bad things would be happening to the amp and likely the speakers. For the most part, high current amps are desireable as they can be more dynamic on music as they can draw increased current for milliseconds on dynamic "peaks". This is MUCH different than sourcing 20 amps continuous.

4 Ohm Speakers with a sensitivity of 87-- 8 Ohm rating (that's 87 dB at one meter with an input of one watt) will play at 87 dB with an input of 2 watts, 90 dB with 4 watts, 93 dB with 8 watts, etc.-- power needs to double for each increase 3 dB of volume. Room size, desired listening level, and speaker sensitivity will determine max. output. In average sized home rooms, 90 dB is pretty loud (IMO) and with your set-up it only takes 4 wpc to produce that volume-- at one meter. Where the higher power becomes important is in accurately producing dynamic peaks.

And watts can be converted to amps if you want-- I just don't remember how to do it. Good Luck. Craig

I suppose if you set volume at max. your amp could possibly source 20 amps (continuous) of current but bad things would be happening to the amp and likely the speakers. For the most part, high current amps are desireable as they can be more dynamic on music as they can draw increased current for milliseconds on dynamic "peaks". This is MUCH different than sourcing 20 amps continuous.

4 Ohm Speakers with a sensitivity of 87-- 8 Ohm rating (that's 87 dB at one meter with an input of one watt) will play at 87 dB with an input of 2 watts, 90 dB with 4 watts, 93 dB with 8 watts, etc.-- power needs to double for each increase 3 dB of volume. Room size, desired listening level, and speaker sensitivity will determine max. output. In average sized home rooms, 90 dB is pretty loud (IMO) and with your set-up it only takes 4 wpc to produce that volume-- at one meter. Where the higher power becomes important is in accurately producing dynamic peaks.

And watts can be converted to amps if you want-- I just don't remember how to do it. Good Luck. Craig