Anyone with a DTS issue on the DVDA should get in touch with me directly for replacement.
Regarding the DTS-HD against the LPCM, it is quite possible to end up with very different sound off each stream.
Blu-ray is a weird format - and DTS-HD MA is a strange beast too, and these are the possibilities for a "different sound" compared to LPCM - what you must remember is that while both DTS-HD MA and Dolby True HD are so-called "mandatory codecs", it is in fact only the hidden core streams that are mandatory supported - the lossless component does not have to be supported in any player and on a lot of Profile 1 players you get the DTS-HD MA or the Dolby True HD light, but you are hearing AC3 and DTS Core audio.
Another way things will sound different to the lossless is with a DTS-HD Essentials decoder. All manner of odd things can happen, and we have learned that including the core stream at 96KHz can trigger all manner of problems in certain players using this cut-down cheap-ass decoder because a lot of players siomply cannot handle DTS 9624 - this is no big deal off a DVD, where the DTS 9624 is in extensions & the core is still 48KHz but with DTS-HD MA it is possible to set the core itself to 96KHz. This can - and does - cause decoding issues usually in the form of on-the-fly SRC down to 48KHz.
The other problems with early players is the use of "legacy" audio connections (ADAT/Lightpipe or CoAxial) as it is not possible to output lossless surround over these connections & quite possibly it is also not possible to use 24/192 LPCM stereo down these connections - we are investigating this and the early indicators are not good.
To get around these issues we have changed the way we do Blu-ray as follows:
1 - All playlists with 5.1 mixes default to DTS-HD MA to ensure output. Streams can be changed on the fly with coloured buttons where available.
The default of DTS-HD MA with a 48K core guarantees it will play on everything. The inclusion of LPCM 5.1 guarantees maximum quality for those who want it, ditto stereo.
2 - All Stereo playlists at 24/192 will likewise be defaulted to a DTS-HD MA version with a 48KHz core. Again, LPCM will also be included.
I hope this helps, and if anyone needs any further clarification on anything please drop me a PM.