Its a good DVD-A soundtrack, recorded at 88.2 kHz - its only drawback is the large amount of noise from an A/C or heating system and some HF noise like a quartz digital clock beating against other frequencies present or something. Consider it Tice Pulse Technology added for free!
i got the Pink Floyd Dark Side Immersion box set today and the 1cent ProArte Shure HTS Stereosurround demo CD also arrived and sounds wonderful. The Shure process had the best fidelity of any of the Dolby MP equivalent matrix systems - they have a clarity and fidelity that even Dolby's encoders can't match, due to, I believe, the precision 20-20kHz phase shifters and Shure's superb engineering.