Using my notebook's internal sound card at 96k, at somewhat elevated levels (but NOT clipping the target tone), keying on the IM sound of the test tones, source of IM unknown [which is exactly what the organic twins are probably doing but they won't admit it]:
foo_abx 2.0 report
foobar2000 v1.3.3
2015-04-06 20:18:59
File A: keys_jangling_full_band_2496_1644E2Q150_2496_test_tones_f5.flac
SHA1: 0c05bc4a9e99eb72528a4b12c6a2769638f234a0
File B: keys_jangling_full_band_2496_test_tones_f5.flac
SHA1: 1fde9c4e1c933827af0efcdba74cd10d0e2a88f1
Output:
DS : Primary Sound Driver
Crossfading: NO
20:18:59 : Test started.
20:19:31 : 01/01
20:19:36 : 02/02
20:19:43 : 03/03
20:19:47 : 04/04
20:19:51 : 05/05
20:19:57 : 06/06
20:20:01 : 07/07
20:20:06 : 08/08
20:20:06 : Test finished.
----------
Total: 8/8
Probability that you were guessing: 0.4%
-- signature --
0287eb7aa313132ae790c42cd2a8b82d4c9b685d
Using HDMI at 96k to my Marantz prepro in Pure Direct mode, NOT at elevated mode at all, keying on the same IM distortion after the target tone, the difference is so obvious I simply "ran the Xs" and hardly ever even needed to hit A or B to reestablish my reference:
foo_abx 2.0 report
foobar2000 v1.3.3
2015-04-06 20:33:37
File A: keys_jangling_full_band_2496_test_tones_f5.flac
SHA1: 1fde9c4e1c933827af0efcdba74cd10d0e2a88f1
File B: keys_jangling_full_band_2496_1644E2Q150_2496_test_tones_f5.flac
SHA1: 0c05bc4a9e99eb72528a4b12c6a2769638f234a0
Output:
DS : Primary Sound Driver
Crossfading: NO
20:33:37 : Test started.
20:34:02 : 01/01
20:34:07 : 02/02
20:34:12 : 03/03
20:34:19 : 04/04
20:34:25 : 05/05
20:34:29 : 06/06
20:34:32 : 07/07
20:34:40 : 08/08
20:34:40 : Test finished.
----------
Total: 8/8
Probability that you were guessing: 0.4%
-- signature --
26523f2037de763acf8946ca2a296939942e0c5c
At least the audible clicks are now gone.