Why? You already have a Sony, don't repeat the same mistake twice! Now, I have a Sony too and I hate my choice back when I bought it. It may be a fine receiver, has 2 multi channel inputs, but the amplification is piss-poor. My next upgrade (deffinitely this Christmas) will be a separate amplifier, either B&K or H/K. I think in your case you will mostly benefit from a separate amp. Look into some used H/K, PA4000 for example is $899 MSRP, so I am guessing it can be found for about $600.