Receiver is practically new as I upgraded from a lower system when Circuit City went out of business. Comes with subwoofer, Front, Front Center and Rear speakers. The receiver can handle 7.1 with addition of Side Surround Speakers.
i have any onkyo system as well and i have the mic for this if anyone wants to borrow it for their initial setup. most the settings can be done manually though, this just makes it easier. it is just pass through what this basically means is that lets say you have 3 HDMI inputs, it can output 1 to the TV then you will need an optical to run from the TV back to the receiver. it will not get the audio directly from the HDMI cable. most any good quality flat panel tv will have an optical out or you cable box, or your ps3/xbox/dvd player etc…
you have to run an optical audio cable for the audio. The audio transfers to the TV but not through the surround system with out and optical audio cable. You wont start seeing units without pass-through until $600+n receivers