Scott,
I think they write about RMS-power (longterm)when added both low- and high-amps.
Professional brands mostly use RMS-power handling rates.
What counts is continuous power with a max harmonic distortion of e.g. 0.03%
Hard to believe a hardware engineer is not aware of the fact that US mains-supplie is 120 Volts and the European is 230V nowadays
It is NOT OK to 'calculate' amplifier output power from the mains-input voltage and recommended amperage.
Peak-to-peak, peak or PMPO tell me nothing but are used to impress potential buyers without telling the harmonic distortion is > 10% !!
Perhaps
http://www.aqdi.com/rms.htm can help ?
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