I originally rated the DNA-1 at 150W per channel just because I am conservative about this sort of thing. The design of the DNA-1 did not change, but the marketing folks did decide to change the power spec to more accurately reflect the amp's power at clipping. Most DNA-1s will hit clipping at about 185 - 190 Watts into 8 Ohms, but quite a few will put out over 200 Watts.
Best regards,
Steve McCormack
McCormack Audio
SMc Audio