I can easily biamp, since my speakers are made for doing so. I have six sets of Crown ES-224's. Four are in my "4-channel room" where I kinda hang out. These are run by four DC300s of varying vintages...all biamped. So four uppers and four lowers = eight. Four Crowns = eight.
Sounds great. Real imaging from my 4 ch tapes and digital conversion to 4 ch digital.

In Living Room (for Mrs. nfaguys and me and TV we have two ES224s, functioning as Front R & L in a 5.1 system with 990 & 755. These are not biamped. Could also be easily. Crown 224s and 212's are made for biamping. Banana jacks are labeled "Normal" and "Bi-Amp". I haven't done it in LivRoom but could easily assign four channels of my 755 to biamping the 224s. The fifth channel to center. Surrounds could be another stereo amp, such as my extra DC300A-II.

If I ever get around to doing this I'll report on it. Right now I seriously doubt it, since the 200 watts is certainly enough to drive the 224s without biamping