Merlin TSM with Manley Mahi-Mahi?

Hi, Gang,

Got my TSM-mmi's paired with a Manley Shrimp pre-amp feeding a Bel Canto S300 ("class D") power amp. I listen to lots of pop and "classic" rock and roll, with some classical, jazz and movie soundtracks, moderate volumes, smallish room (16 x 12 x 8 ft).

What would you think of a move from the S300 to something like the Manley Mahi's? Good move? Expected improvements, if any?

Thanks in advance!