I got the Queen DVD-Audio disc and was sampling the DVD-Audio 5.1 track as well as the 96/24 PCM stereo track, when I decided to see how the DTS track sounded. Much to my amazement my Sony DA5ES indicated that the DTS bitstream was encoded as 3/3 or 6.1. Even though encoded with DTS-ES, it doesn't have the flag to set the receiver into 6.1 automatically, so I switched it on manually - and it, in fact, is encoded with discrete DTS-ES. Many vocals, and instrumental parts that were sent to the rear surrounds, were now being discretely sent to the center rear channel. I didn't really listen extensively to the DTS-ES track, but it is something I will plan on doing - and comparing to the 5.1 DVD-Audio surround track. The curious thing about this is that the fact that this is DTS-ES isn't mentioned at all on the packaging.