Does your Cheap Sony have Preouts? If so you could consider buying a nice 2 Channel amp to run your M60's and use your Sony as the Pre/Pro. Thats what I am in the process of doing with my system. I have a 6.1 system, but am switching over from a Receiver to all seperates.
However for a fix that will allow you to get better sound out of your current system, and still leave you open in the future if you decide to go HT, this might be the way to go.
I would need to know your budget to know what to recomend, and I would spend a little money on wire as well. I recently changed my IC's to DH-Lab's, put 10awg power chords on my Yamaha Receiver and Usher CD player, and put a Hubbell plug in the wall, and my Axiom M22's have never sounded better!! I have Rotel Amps now and they sound good, but I plan to upgrade to McCormack DNA amps.
