I am in the market for a new receiver and have what might be considered a dumb question. I have a sound system in a large room and sometime like to drive all 4 speakers with 2 channel music. It generates a fullness that I can't get with surround modes. Is there a receiver that can drive rear speakers as a set of 2 channel speakers (kinda like A/B speaker settings), or as rear channel surround speakers?

What about receivers with more tonal control as well. Any with built in EQ's?????