Micah, I think you will find your 4802 works very well with the M80s, after all it should be around 180-190 watts/channel into the 4 ohm M80s. however if you still feel the need or possibly more the desire to look for a seperate amp, I would be looking more into Outlaw or as someone recently posted a link to a Crown amp (T1000?) that would work very well with the M80s, that was not too expensive.
Satkartr just tried the XPA2 with his M80s and the amp wouldn't stay on, kept going into protect mode and shut down. I know there have been a few others here that have had the same issue, yet others are happily running emotiva products with M80s so emotiva appears to be a bit of hit or miss.