Viridian and Sean are deadright. Basically I have nothing to add. I've used two Spectral 200 class A amps, one for each speaker-side , to drive two pairs of Stax F93 stators to this day. I suppose that is ( a subform of ) what Sean calls horizontal biamping. Also in my experience bridging amps can constrict the midrange and noticeable increase grain, the only exception I know of are the DMA50 Spectral amps, which retain their speed and pristine clarity also when bridged.
Does bridging give you the monoblock sound??
I have a Parasound HCA 1500a which is rated at 205wpc @ 8 ohms. I'm considering buying a second one and running them in bridged mode which will give me 630 wpc @ 8 ohms. Will this have the same effect as using actual monoblocks? From what I've read is that the major plus that monoblocks offer is imaging. That's what I'm striving for,,,,,,,,,,,pinpoint imaging. I know that there are a lot of other things that contribute to good imaging but I'm just curious about this aspect of it.