Originally posted by n2audio The 430 was tested once to put out 296x2 bridged @ 4 ohms mono(this is actual tested power output, not rated)
I believe the 250 is rated at 225x2 @ 4 ohms stereo. (probably about 200x2 actual)
So the edge in power would certainly go to the 430.
HOWEVER, in my use with the 430...It would go into thermal protection when I had it running hard with all channels at 2 ohms (or 4 ohms bridged). It would take generally 1/2 hour of HARD playing, but nonetheless, thermal shutdown is always a bummer. It's the price you pay for pushing a budget amp to its limits. Still, for the money, it does a good job.