can pioneer LX75 's stereo beat 1.5k hifi stereo?

HI, everybody:

I planned to buy a hifi system, which are as planned:  Marantz pm6004+ kef Q300+Audiolab M DAC. Audio souce is from high def wav files.  Due to my wife doesn't listen often, but we watched a lot moives together. I decide to move to AV system.

I wondered is there any AV receiver can compete my previous hifi combination? speaker can stay KEF Q300. or maybe you guys can give me some ideas. 

I tried to listen the pioneer Lx75 + KEFQ300 combination, I felt very satisfied, but I haven't got any chance to try others.

So, if anyone has any experience please share with us, many thanks !