Any owners out there that utilize 7.1 with this piece?

The manual doesnt come out and say that YES, 5.1 and 6.1 can be turned into 7.1 by the processor. I know that even the Outlaw 950 does this using the Cirrus extra surround. The Rotels do it, the Ati;s do it.

The back of the SP1.7 do indeed have the back surrounds output, but I am hoping that ALL dvd's I watch take advantage of the 7.1. IF it only works when the DVD's themselves have the appropriate flags, and are triggered with 6.1, then I will go with Rotel or Ati, or something else that I am more familiar with.