I think using receiver as prepro for some channels is a good idea. You need to get a receiver with 5/6/7.1 ch pre-out, and the cheapest one was Pioneer D812. D912 has MCACC, so you may want this. You can research on the web, but recent receiver with room EQ feature would be nice, such as Yamaha RX V1400/2400. 2 Pioneers I mentioned are cheaper though.