I have a older 4800 that I have my Oppo going into via the multi channel inputs, and my HR34(Directv) box coaxial in. Now I've been looking at the Sennheiser RS160,170,180's which are all analog. Will these work somehow with my setup and where on the back of the 4800 would I put these so I can have sound out of the headphones and still have sound out of my speakers hooked up to the AVR? I know I can hook it up right in the headphone jack in the front but will lose all sound from the speakers.
One of these days(I keep saying that) I will upgrade the receiver to HDMI inputs. Will that be a problem in the future for one of these headphones or would I need the digital RS220?