I prefer my home theatre to be comprised of digital Audio and Video separate component parts. So that each of the following components - HD-DVB, DVD/PVR, digital cable/satellite and digital multimedia player - have a digital video output/input (DVI Et Al) into a plasma AND therefore need a similar audio outcome from "a digital coaxial and optical audio only surround sound amplifier". Does anyone know if such a thing exists? If so details and recommendations gratefully received!