Same as my Ref 750s. Those are here to stay for good.
Hopefully you have good air conditioning, those amps will generate a lot of heat. I bought a krell amp from a guy that was using the audio research 610T amps with the kt120 upgrade, and he had to figure in a bigger central air unit. He was using those amps just to power the midrange/tweeter and a pair of krell fpb 750 mcx for the bass. It sounded really good with the apogee divas.