All channels driven continuously into 8-ohm loads:
0.1% distortion at 257.1 watts
1% distortion at 299.1 watts

Frequency response:
–0.29 dB at 10 Hz; –0.09 dB at 20 Hz
–0.27 dB at 20 kHz; +0.68 dB at 50 kHz

This graph shows that the Power5's left amplifier channel, with two channels driving 8-ohm loads, reaches 0.1 percent distortion at 291.6 watts and

1 percent distortion at 349.5 watts. Into 4 ohms, the amplifier reaches 0.1 percent distortion at 538.9 watts and 1 percent distortion at 640.2 watts. An input level of 117.0 mV was required to produce an output of 2.83 volts into an 8-ohm load, indicating an overall gain of 27.59 dB.

Crosstalk at 1 kHz driving 2.83 volts into an 8-ohm load was –109.0 dB left to right and –106.78 dB right to left.—MJP