I am currently using a Crown K2 power amp with Apogee Stage speakers. You can read about each of them:
http://www.crownaudio.com/media/pdf/legacy/136713.pdf
http://www.crownaudio.com/media/pdf/legacy/102010.pdf
Stage
(You may want to read the reviews; they are great speakers.)
The speakers are widely regarded as some of the most "revealing" that one can get. The Crown amp is fine. The K2 also accepts banana connectors, but it does not have any RCA type inputs; I use adapters, which are very cheap to buy.
I very much like my Crown K2, as it has no fans, so there is no fan noise at all, and it is a sealed case, so dirt cannot get inside. I also have never run out of power with it; I should be able to totally trash any speaker I own with undistorted power from it. I am very glad I bought it. (I am even more glad that I bought the Apogee Stage speakers, but you are asking about Crown amplifiers.)