Ok I found one difference between the SR7005 and the AV7005 (besides the amps vs. XLR outputs). The rear apron (I forget what we call that in American
has 11.2 channels of unbalanced, RCA pre-outs whereas the SR7005 has only 7.2. [heights and wides, L & R each, are only on the pre-pro, not the receiver]
OOPs, I see now cmryan821 pointed this out earlier.
P.S. By ".2" I mean I see there are two subwoofer outs on both. I would think they are electrically the same, nothing you couldn't pretty much replicate by simply slapping on an RCA "Y cord" on a single output, but then again they may be discrete, proving either:
A) The designers are psychoacoustically inept.
B) In bed with subwoofer manufacturers who think it will help double their sales (at least with some customers)
C) They are bowing to market pressure, much like why many speaker manufacturers uses bi-wire capable binding posts, even though they know full well they're utterly useless. [Note I said bi-wiring is completely useless, not bi-amping, which may have a teeny tiny benefit in some situations.]