if you are wondering how to compare amplification specs:

here is a good way to rate:
8 ohms, 20 Hz-20 kHz, <.05%THD

This example is saying an 8ohm load while playing a signal which represents the spectrum of 20Hz-20kHz producing .05% distortion.

here is a not so good way to rate:
8 ohms, 1 kHz, <.05%THD

This example has the same load and same distortion, but only at a test tone of 1kHz. These amps are FAR from being equal. Who knows what distortion is experienced away from that 1kHz tone, obviously a lot or it would have been rated the other way...