Peter, I owned the MAXX 1's and drove them with the set up you have except I had 750 mono's and the Krell can easily control the bass of of the MAXX. I downsized to monitors and sub because it sounded better than MAXX in my room. However, I am trying the Zu Audio Definitions 1.5 and for the money, they easily compete with my MAXX and easily with the Watt/PUppy 7's. The bass is actually better than I had from my MAXX. The bass is just as tight, and fast as the MAXX, but I can hear a lower octave. The midrange and tweeter are extremely musical and detailed. Before you spend $40k on MAXX twos, try the no risk Zu 60 day trial period on the Definitions which cost only $9k.You would only be out the shipping both ways; a small price to pay to save thousands. When the Zu men came to Scottsdale to set up my pair they also brought a pair to replace a pair of Wilson Alexandria's for a guy a few miles from me. He is much happier with his Zu Definitions than his $125k Wilson speaker. This is an extremely dynamic, musical speaker that offers tremendous value for the dollar that must be heard to be believed. You surely won't need the Krell 700 as these things have an internal amp (for the bass cones) and can be driven with 15 watts because of the 101db efficiency. Think of the money you will save when you can sell off that hunk of metal heating your room. Hit the link below and scroll down through the article (2nd page) to see the pictures of Archie, who sold his Wilson's for Zu Definitions. I am just trying to save you some money and for falling for all the hype you read in the magazines. I love Dave Wilson; he's the definition of class and his product and marketing is superb, but I don't think his product is $30k better than the Zu. And, I don't think I am alone on this if you read other threads and the reviews on the www.zuaudio.com website. Its your hard earn money, but as one who has been there, I am glad I listened.
http://www.6moons.com/industryfeatures/zutour/zutour_2.html
http://www.6moons.com/industryfeatures/zutour/zutour_2.html