I have read posts from guys who tested the radio output.
It's about a whopping 14 watts MAX, and serious distortion (over 1%) starts to set in at about 8 watts. (per channel)
So using "RMS" numbers, the P5 stereo is a healthy 32 watt system. And using "Pyramid audio" calculations, you've got a heart-stopping 56 watts of pure power movng those massive 25 watt max, PAPER cone speakers.
~HH