Quote Originally Posted by PeruvianSkies
A 2-channel amp in bridge mode is not exactly still equal to a true monoblock, but is a cost effective alternative to getting more power to the speakers. You will also want to check your OHm rating on your speakers before getting ahead of yourself. The Parasound HaloA23 that I mentioned can do 200w/channel in stereo @ 4 ohms, but can do 400w/channel in bridged mode @ 8ohms. Just something to consider. The Parasound Halo JC1 monoblock destroys those numbers those.
A person thinking of using a 2-ch amp in bridged mode should consider that though the amp might be rated for 4 ohms in 2-ch, it might good for only 8 ohms in bridged mode. Basically that's because each channel is see only half the impedance of the speaker, e.g. a 4 ohm speaker looks like 2 ohms to the bridged amp.