Well, if you want more power, you'd just mono-amp (to coin a phrase) with a big power amp. Such a Halo, Outlaw Audio, Rotel, Odyssy Stratos, or other, to name a few. Arr, the cliches be flyin'!

Biamping doesn't add power at all. It just (theoretically) lets you match amplifiers with individual drivers... if you have an external crossover between the amps.

I am the Doctor, and THIS... is my SPOON!