Originally Posted by DSulls
Unfortunately, the optical output doesn't pass through 5.1 audio. So if he's ever watching Blu-ray movies or HD stuff that's coming through a cable box, his audio would be downgraded to stereo and that basically defeats the purpose of the AVR
He could always go "Old School" and use optical or coaxial to the Onkyo directly from the cable box, Blu-Ray, and/or PS3. I remember about 7 or 8 years ago using all 4...