4K Blu-ray

The film was remixed for the first DVD to remove a great deal of the bass and tame the LFE channel. Every version since uses this revised mix. Only the Laserdisc and release prints have the original theatrical 5.1 discrete mix. The 2.0 matrix version also has the low end intact on LD and VHS. Just demo the main title or the aquarium restaurant glass explosion and you’ll note the difference immediately.

The first DVD while porting the LD and vhs master is where the audio remix happened. The remix still sounds good but it was an unnecessary compromise to place on one of the great mixes of all time. The UHD also uses the remix.

The Paramount UHD is ok though it has some frozen grain and some HDR issues as expected of a screwy Paramount master.

Lionsgate 4K Blu-ray has terrible compression, but still beats out the old disc which was sourced from a mediocre old scan with edge enhancement, and which has compression issues of its own.

The film originally premiered with two mixes, a 5.1 for upgraded theaters, and a distinct matrixed Dolby Stereo mix for older venues. The original 5.1 mix can only be found on the earliest LD/DVD releases, as all later releases replace it with a mediocre 7.1 mix with reduced dynamic range.

The Atmos mix is based off of the previous 7.1 remix, but with futher alterations as per director's wishes. One scene intentionally drops out into silence, see this post for details.

Comparisons

Spectrograms

Fox 4K Blu-ray reference sound

Criterion  Blu-ray contains exclusive interviews.

The 2013 King Records Blu-ray is the only Blu-Ray release with the video processed look that appeared theatrically, all following Blu-Ray releases use an restoration straight from the original camera negative.

Both will look identical in motion but the Turbine looks marginally better due to a higher bitrate allocation by each cut being given its own disc, whereas Arrow had FiM seamlessly branch the two onto one. However, Arrow has both cuts in Open Matte (on Blu-Ray) and corrected the opening Universal logo's aspect ratio. https://slow.pics/c/McvVcYDG

Second Sight 4K Blu-ray has better encoding than Magnolia Pictures

Second Sight vs Nordisk Denmark Import - caps

Radiance 4K Blu-ray from nic:

Unadvertised HDR10 grade that looks better than the equivalent Blu-ray it's packaged with, grain rendered very clean even when it's heavy. FiM encode so surely it's better than the Media Blasters UHD, but there are still issues with frame stability, some shots have this jitter that kinda hurts to look at. Not a night and day upgrade over the Blu, but it's better and despite its issues, probably the best it'll ever be.