Here is the result of the Foobar ABX Test:
foo_abx 1.3.4 report
foobar2000 v1.1.15
2012/10/24 23:24:51
File A: C:\Danger Mouse & Daniele Luppi\Rome FLAC\10 Black.flac
File B: C:\Danger Mouse & Daniele Luppi\Rome\10 Black.mp3
23:24:51 : Test started.
23:25:43 : 01/01 50.0%
23:26:24 : 01/02 75.0%
23:27:28 : 01/03 87.5%
23:28:12 : 01/04 93.8%
23:28:50 : 02/05 81.3%
23:29:55 : 02/06 89.1%
23:30:37 : 03/07 77.3%
23:31:05 : 03/08 85.5%
23:32:00 : 04/09 74.6%
23:32:47 : 05/10 62.3%
23:33:44 : 06/11 50.0%
23:34:21 : 06/12 61.3%
23:34:56 : 07/13 50.0%
23:35:44 : 07/14 60.5%
23:36:45 : 08/15 50.0%
11:13:39 : Test finished.
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Total: 8/15 (50.0%)
My "guessing" probability peaked at 90% - and indeed it felt like guessing toward the end mostly. I am going to run this again sometime later with a different track. With this one, my best guessing occurred during a vocal session by Norah Jones, in which there was some obvious echo reaching the left channel that was not always present. Emboldened, I focused on a section of male hummers recessed in the background, behind a string section. Like some claim, I was convinced that the music was "fuller" or that I was hearing the slightest bit of artifact in the sound. I didn't even bother listening to the bassline, which seemed identical between recordings. Shouldn't lossless be "cleaner"? My ears weren't sure.
I think it is correct that before the only thing I was really hearing, was a difference in "volume". But I stand by my assertion that, in "real world" listening, I am unlikely to normalize volume between source material and/or my devices. In my car, for example, CD, USB, and AUX sources all create a problem in terms of setting amp gain properly and EQ tuning. AUX sources are typically 3.5mm connections to phones or iPods, and sound crappier for reasons you probably know. They also need more gain, since their output is weaker. USB distorts sooner in my car (and now I know why, probably because I should apply replay gain to the tracks), but sounds good, and CDs tend to sound the best, and play the "loudest" before the scary scratching noise start in my car. That scratching noise, by the way, could be the 10 year-old interconnects I rely on, or something else. Maybe crossovers, maybe the pre-outs on my deck distorting, I am not sure.
Anyway. New tracks next time!