I don't believe it came in High Res DVD-A format. I have the 5.1 SACD cut of this and you can hear every instrument around you for songs like time, money, breathe etc. For US and them, you can hear the snare drum beat on the SL so clear beyond the other instruments.
THe guitar and major drum beats are localized to FL/FR. The vocals are C/SL/SR at various times and the extra effects like laughing, crackling on the disk are set to FR and SL pan as well as FL/SR pan.
Its an amazing experience when you sit in the middle and close yoru eyes and listen to the entire CD.
My major gripe about the CD is that it does not have Comfortably numb on it as that songs stresses all speakers and sub with its range of frequency. Very similar to Stairway to Heaven.
The DVDA is a 4.1 from the original quadrophonic (4 channel) master tape by Alan Parsons in 1973. The .1 has been added. The DVDA is a bootleg, rumored to be leaked by Parsons himself.
The 5.1 SACD is not from the original master tape, but remastered from 2 channels by the master remasterer James Guthrie (not sure if Doug Sax was involved).
Pink Floyd DSOTM 4.1 Alan Parsons Quadmix DVD-A [Archive] - Audioholics Home Theater Forums
This is a quad mix. It blows away, yes I repeat, blows away the SACD. I read all over the internet that it did but didn't believe it would until I heard it for myself. My complaint about 5.1 music is that the sound is too centered. Not this. This 4.1 mix is great for 2 channel purists and still gives you rear surround. The bass is amazing.
It made every hair on my body stand up and put a smile on my face, making me gitty like a child.