Any advantage to using monobloc amps

In practice: I've noticed they tend to throw up a bigger soundstage than a single-chassis equivalent.

In theory: full rated power is always available to each channel, whereas single-chassis amps demand a lot of the PS on loud & complex passages.

When you switch from a stereo amp to mono's of the same brand, you will get a bigger soundstage, better seperation. Your bass is also tighter and more control. Music sounds more natural and effortless.
Nick

No crosstalk, highest power available (1000+W),larger pwr. supply. Macho, too.

1...You can locate them right next to their speaker so that cables are short.
2...You don't need a fork lift to move them around.

The advantages of Monoblocks are:

1. Crosstalk between channels is eliminated.
2. Shorter speaker runs by positioning Monoblocks behind speakers.