DTS-HD Master Audio / Dolby TrueHD / PCM 5.1

It is hard to tell unless you have a movie soundtrack that has at least DTS-HD and Dolby TrueHD to compare. It is easy to switch to PCM. It really depends on how it is done. I have heard bad DTS-HD and Dolby TrueHD. If you pointed a gun at me to ask me to choose, I would choose DTS-HD, although Batman Dark Knight (which has Dolby TrueHD) sounds very decent.

Before Blue Ray, I always preferred DTS to Dolby Digital. DTS has more presence and dynamic.

Please note that DTS-HD has a significantly higher bit-rate than Dolby True-HD. This means the disk tranport must spin at a higher velocity which may result in increased player noise.

In my case (Pioneer BDP-51FD) I can hear the player 10 feet away, inside an equipment rack with a plexiglass front cover. The fidelity of the DTS-HD is nullified by the noise of the transport (it's always something...).

Dweller - How can DTS-HD spin at a higher velocity? I thought all Blu-rays spin at a specified rate, faster at the be beginning, then gradually slower, as the laser goes from inner toward outer part of disc. Same as DVD, CD.

True Dat!