Do av receivers have non-powered outs? For example I have a powered subwoofer currently, was thinking I could stagger my upgrade if I could run a non powered rca or xlr out to my existing woofer. Just a thought.
The way I am reading this makes me think you are looking for a low level line out which most AVR's have at least for subwoofers. If you want the rest of the channels as line level outs you have to move up the line to more expensive models.