It still seems possible that the MPS was shutting down prematurely due to some quirky interaction between the MPS protection circuitry and the 4-ohm speakers, ie that Randy was not really getting full advantage from his 300W per channel.
It seemed pretty clear that the MPS was able to put out more clean power than the Denon, ie the Denon seemed to start clipping at lower SPLs than the MPS, but the MPS also seemed to shut down at levels where the Denon seemed to be playing cleanly -- at least that's what I gathered from the 11,000 or so posts on the subject
