I'm need of some advice. I've just upgraded from a Denon x2400h running Kef t305 setup in a 5.2.2 configuration with Kef t301s as atmos speakers. I've now got a Marantz sr7015 and want to have a 7.2.4 setup. From what I read I need a two channel stereo amp to power the last two height channels. With this in mind can anyway give me any recommendations for an amp to power a pair of t301s which are rated up to 150w?