Rowlands

hi
i'm considering changing my power amp- 'mcintosh275' to rowland's power amp to drive my 'dali helicon 800' speakers. actually i'm not sure '275's capacity to drive 'em. but somebody said it's ok although they say dali need upto 400watt amp power to be driven.
my preamp is rowland 'synergy ll'
if i have to do,
i wonder if rowland model 5's power is enough to do it.
or model 10, model 8, model 7.
i need your experiences and advices.

thanks hifimaniac, i'm looking for model 8 but it's not on the list. i guess 250w @ 8 ohm - 400w @ 4 ohm will drive my
big dali 800(4 ohm) well enough.
what about model 5 ? not enough for big speaker?
and do you think rowland preamp synergyll goes well with
those old model power amps?

rowland model 501, 201
they are 'class D'(chip amp) mono blocks using 'ice power' technology from jeff rowland.
any big differences from analogue amps like model 7 or 302
in sound quality?
some said no problem but must be difference btw them.
need your words.