Using existing amp with AV integrated receiver
I own a Jeff Rowland 112 2 ch amplifier, and a very nice pair of ProAc 3.8 speakers. I would like to set up a 7.1 surround sound system using my existing components. My question is this: Is it possible to buy a mid-end integrated receiver (Yamaha or Onkyo) and somehow still be able to use my amp to power the front 2 channels? And if so, would this free up more of the power in the receiver for the other channels? Is this an reccomended course of action? Thanks for your help.