I was looking to know if this mysterious 70mm track (from the 4K77) was actually a real recording. I have my answers.
Thank you hairy_hen for your work.

Is there actually several people/theaters known to own a 70mm print or it is a one of a kind ?

Reading the few previous messages… since i moved few years ago, i realized how environement has a big impact on sound.
When you move from a square/rectangular room with hard wall, to an open room with half the wall beeing glass (large windows)… Well…

I had to buy a new amp and a umik… and later a miniDSP too for my sub 😃

A little off-topic, how is the Disney+/UHD soundtrack ? I must say i never listened to the DVD/BD soundtrack but i remember it was controversial (swaped music on surround tracks or something like that…)
(I have no complain against the 97 SE soundtrack)