Sorry, seems like i explained myself wrong

the towers I'm getting (avianos) are going to be used with a denon 3313, that sony isn't even an AV, it's just a stereo amp with the capability to run 4 speakers on a stereo system, I do want to know if the denon 3313 can do the same as the sony and run 4 speakers as stereo?
What sub would you suggest then? price would have to be similar to the MS (roughly 600pounds or 765EURO or 950US dollar)