Warner Bros

For the most part, the mono track available on the BD and UHD is fine, but there's an 8 minutes long segment which sounds terrible with artificially expanded frequency range causing very audible artifacting. The 5.1 remix doesn't have that issue. Sample

Shout! Factory 4K Blu-ray is more filtered than Warner Bros Blu-ray, although differences may not be audible.
(While the LaserDisc 2.0 is reportedly better clarity in dialogue?)

DV Plot. For those curious, the sculpture is still the altered one found on the re-issued DVDs, and previous Blu-ray.

5.1 audio on the Shout (either be 1080p or 2160p) was 16-bit, with more roll-off than the Warners one, the Warners was very similar to the NTSC and in terms of balance of the mix, while the Shout seems to be tinkered with, with the score at the beginning and at the end sounding worse on Shout.

Audio Comparisons: Slow.pics

For the regular commentary found on the NTSC DVD "Original Version" (there's no difference including the other NTSC DVD), Shout or Warners; the Shout commentary was just a bloated lossy transcode with some EQ. The best one was from either of the two DVDs.

Commentary Comparisons: Slow.pics

Now there's another commentary; it's basically the same commentary but has some parts different than the others, it can be found on EUR PAL DVD with subs for said commentary. The subs for it doesn't sync for the commentary #1 and vice-versa. Samples

Director's cut: 2007 WB Blu-ray; Arrow is a lossy transcode with dynamics compression.
2007 BD's AC-3 track with dynamic range compression enabled is nearly identical to Arrow's, see comparison

Theatrical cut is fine.

Both cuts are excellent in 4K. See caps

Warner Bros 2002 DVD has the best sounding mono

Hammer & Warner Archive 4K Blu-ray are confirmed by Randy Miller to be identical down to the encode, the only difference being different studio logos.

(no audible difference)

The EU disc from Universal has neutered bass.

4K Blu-ray Atmos track is much more compressed in all channels.

DE Turbine is similar in quality, US Warner Bros is worse (caps: EU vs US, EU vs DE)

The 4K discs have different color timing to the older master, see caps.

The 2012 DE Turbine disc is the master as the 2008 US Warner Bros, only with some sharpening and a layer of added grain.

Arrow 4K Blu-ray > Shout! Factory see caps

The DV FEL layer noticeably restores high-frequency detail that’s missing from the base layer. See caps. issue: the 4K disc is missing chyron in some beginning shots. TBC officially.

WB Home Video US LaserDisc [23000] for the OG stereo

(caveat: missing extras present on the Germany NSM Blu-ray mediabook)

Warner Bros Blu-ray audio is 24 bit compared to Sony's 16 bit

> Warner Bros Blu-ray

Included in the Complete Kubrick box set with FiM encode of the same master from the WB release without the filtering, 1.85 ratio restored for US Cut; both US and International Cuts are 4K.

No Blu-ray or DVD release until the Criterion 4K Blu-ray has presented the US in its original theatrical aspect ratio of 1.85:1. The International Cut has never been presented in it's OAR of 1.66:1 in any home video releases.

The packaging on the back of the WB 4K Blu-ray incorrectly states it as 1.85:1 when the movie is actually 1.78:1 as is the original Blu-ray. 

Included in the Complete Kubrick box set with FiM encode of the same master from the WB release without the filtering, 1.85 ratio restored

Included in the Complete Kubrick box set with FiM encode of the same master from the WB release without the filtering Comparison between the Criterion and WB.

Crystal clear, albeit with some distortion in louder areas

The 4K Blu-ray reuses the same poor mastering used on the 2006 WB Blu-ray, only with a completely unnecessary bass cut and extra noise reduction.

Even putting resolution aside, the Warner Archive 4K Blu-ray has the best video. The old Blu-ray master and earlier DVD both had massive issues with colour.

That said, picture on the 4K Blu-ray isn't perfect, with strange posterized magenta glints and some instances of DNR: https://bsky.app/profile/dagscott.bsky.social/post/3leahavqi7k2l

Sony Blu-ray only has 5.1, not Atmos

> WB US 4K Blu-ray

UK/Germany Warner Bros Blu-ray has the Atmos mix

> US Paramount 4K Blu-ray (Taiwan 4K Blu-ray is not low passed as the US 4K Blu-ray and has better grain and fine detail retention)

Original mono mix was never released after VHS/LD. Warner's DVD and Blu-ray had a 3.0 remix in a 5.1 container. Criterion has new stereo and 5.1 remixes. Stereo is director's current preference.

https://forum.blu-ray.com/showpost.php?p=23879243&postcount=51