Currently my home cinema 5.1 system comprises a cheap Sony blu ray player into a surround sound receiver (Rotel RSX 1550) via HDMI. The front left/right channels are run via my Naim 252/300 with the 252 in AV bypass mode. All other channels are run by the Rotel.
My question is this, in the above set up, would replacing the Sony blu ray with a premium player (e.g. Oppo etc) would I benefit with improved picture and audio or are these processed in the Rotel and hence would be the same quality regardless of which blu ray player I use ?
Apologies if this is a very basic question but I'm not sure which part of the chain is responsible for what as far as the audio and image processing is concerned.