No, You Cannot Bi-Amp

The designers of these speakers do not believe that bi-amping is superior to the as designed implementation.
The .7 maggies have a series crossover that they feel superior to any form of biamping. Wilson from the start has always felt that a single amp gives the best overall sound. I have tried bi-amping my 3.6's but have always gone back to a single amp

Take the money you save on extra amps, cables, and jumpers and buy a nicer amp, probably with more power so you don't give up any dynamic range.

Sonic benefits:

Transparency
Dynamic Headroom is not jeopardised by either descrepancies of amplifiers or decreased input amplification impedance
Tonal balance

Negatives:

1. 2 cheaper lower powered amps can have more power than one nicer more pricey amp so there are limitation on available options that should IMHO be present in complexed speakers
2. If two amps are absolutely identical, the benefits could be identical to a single amp only with increased power.
3. Y-connector on preamp output may be necessary that decreases an input impedance of amplification again limiting the dynamic headroom.