Hi Crash,
The 4410's are not my nearfield monitors, I have a pair of Events for that. I have used a number of other quality modern amplifiers with the 4410's and I could never mix through them till now, and its not a matter of power (the phase linear only has 200 watts per channel) , its a matter of the transients being accurately reproduced and the high end sounds like it had some frequencies pulled out through the other amps. I can tell much more about what is going on in the range below 70hz with this amp. All I can say is that I revisited old mixes and could immediately hear things that were out of balance and fix them. I'm not trying to say room treatments don't help your mix, I'm just saying that for me, the money I spent on this amp made a much bigger difference than a room treatment that would cost more.
Have a blessed day,
Mike W.