Are there any HD DVD players that can pass Dolby TrueHD or DTS-HD Master Audio at FULL resolution yet?
Any player that can decode TrueHD and DTS-HD can pass them at
FULL resolution they just pass them already decoded rather than bitstream to be decoded by the receiver. Every player I know of can do TrueHD, only the newer ones can do DTS-HD.
If you would like a player than can pass bitstream, so your receiver decodes the signal, you will need to find a newly released player with HDMI 1.3 and bitstream
Both of these situations will get you the same sound quality, unless one piece of hardware does a better job decoding than another. The only difference is where the decoding is done.
To take advantage of bitstream signals you need a receiver that can decode these formats and is HDMI 1.3. To allow the signal to be decoded in the player you need any version of HDMI or multi-channel analog connections.
Hope this clears things up for you.