OK, my turn to ask a question...

I am trying to find a sub to match up with my amp. I have the decision narrowed down to two choices, but my question is about the amp, not the sub.

Has anyone on here bench tested a 2100HCCA Orion amp or seen results from a valid bench test. I know it will do much better than its rated power into 4 ohms bridged, but I would like to confirm this. It is 1995 vintage.

Another question that is related: Does anyone know for sure if the power supply and/or output devices were upgraded between the generations of this amp or if they just reduced the safety margin when they changed the rated min load from 1 ohm stereo to .5 ohm stereo on this amp?