I used to use a Rega Exact cartridge, which was mounted with Rega's own alignment (something like Stevenson), including the third mounting screw. I then aligned it to Baerwald, recorded before and after, and I thought the Baerwald alignment was a bit brighter, but I actually thought I was just imagining it, which is why I did this ABX test, which was one of the earliest ABX tests I ever did:
foo_abx 2.0.2 report
foobar2000 v1.3.10
2016-09-14 21:08:19
File A: Stevie Ray Vaughn - In Step - Riviera Paradise.wav
SHA1: 7b4c524c12fa6a1fbf908c49c27293afafa15d8e
File B: Stevie Ray Vaughn - In Step JUSTERET PICKUP.wav
SHA1: e2f04fdfa1a7c6e18d78c1716162aeae7f0389b3
Output:
DS : Primær lyddriver
Crossfading: NO
21:08:19 : Test started.
21:12:28 : 01/01
21:12:42 : 02/02
21:13:05 : 03/03
21:13:24 : 04/04
21:14:20 : 04/05
21:14:36 : 05/06
21:14:59 : 06/07
21:17:18 : 07/08
21:17:49 : 08/09
21:18:55 : 09/10
21:20:18 : 10/11
21:20:45 : 11/12
21:21:50 : 12/13
21:22:21 : 13/14
21:22:42 : 14/15
21:23:17 : 15/16
21:23:17 : Test finished.
----------
Total: 15/16
Probability that you were guessing: 0.0%
-- signature --
0358f776ff1c46feb6f6777c9826a01fab1f0cba
I EQ'ed a song by Queensryche in two different ways. One seemed to have more "air" than the other, which it also was, since one had more top-octave content than the other. I can show a graph of the difference if you like.
Here's my ABX of it:
foo_abx 2.0 report
foobar2000 v1.3.7
2019-10-26 18:34:05
File A: 03 - Jet City Woman EQ (kurve gemt som Queensryche 5 i Audacity).wav
SHA1: e093a40b54ad7cd3f40b27fe7fa7741abfc10e2a
File B: 03 - Jet City Woman EQ (kurve gemt som Queensryche 6 i Audacity).wav
SHA1: 192443380950b2630150b7ebbbd6c5dea620708c
Output:
DS : Højttalere (CA USB Audio)
Crossfading: YES
18:34:05 : Test started.
18:38:09 : 01/01
18:38:17 : 02/02
18:38:24 : 03/03
18:38:30 : 04/04
18:38:37 : 05/05
18:38:49 : 06/06
18:38:56 : 07/07
18:39:03 : 08/08
18:39:10 : 09/09
18:39:17 : 10/10
18:39:24 : 11/11
18:39:30 : 12/12
18:39:38 : 13/13
18:39:53 : 14/14
18:39:59 : 15/15
18:40:26 : 16/16
18:40:26 : Test finished.
----------
Total: 16/16
Probability that you were guessing: 0.0%
-- signature --
8d010bf07333f890ebdcecc855d12670bcde3a4f
Then I offered my girlfriend at the time to do the same ABX test, and this was the very first ABX test she ever did:
foo_abx 2.0 report
foobar2000 v1.3.7
2019-10-26 18:59:16
File A: 03 - Jet City Woman EQ (kurve gemt som Queensryche 5 i Audacity).wav
SHA1: e093a40b54ad7cd3f40b27fe7fa7741abfc10e2a
File B: 03 - Jet City Woman EQ (kurve gemt som Queensryche 6 i Audacity).wav
SHA1: 192443380950b2630150b7ebbbd6c5dea620708c
Output:
DS : Højttalere (CA USB Audio)
Crossfading: YES
18:59:16 : Test started.
19:03:06 : 01/01
19:03:55 : 02/02
19:04:43 : 03/03
19:05:11 : 03/04
19:08:00 : 04/05
19:08:41 : 05/06
19:09:03 : 05/07
19:09:24 : 06/08
19:10:22 : 07/09
19:11:56 : 08/10
19:12:32 : 09/11
19:12:52 : 10/12
19:13:10 : 11/13
19:13:25 : 12/14
19:14:29 : 13/15
19:15:34 : 14/16
19:15:34 : Test finished.
----------
Total: 14/16
Probability that you were guessing: 0.2%
-- signature --
f4ed7a50c8e4e5de0010fa44b921be0474409ac2
This might not be exactly what you're looking for, but at least it's a start.