I love a good skeptic and feel the sound science section is where the rubber meets the road. Love it. but I disagree that short term bursts/ comparisons showup all variance in sound. Sometimes it takes listening over time with many recordings, but I hope stv is not discouraged. Maybe throw those who are subjectivists a bone and give a test of a nuforce dac and nwavguy. that one should at least show some difference, god that nuforce sounded like garbage to my ears.
This assertion has been tested and it turns out that the few attempts to critically test this assertion show (so far) that short-term blind testing is in fact more sensitive than live with it long term testing. Tom Nousaine did this with a CD-R that may or may not have 4% distortion added to it, The long term listeners failed to detect the noise/no noise setting of the CD above a chance level , the short term blind listeners detected it much better...12/16 - with shorter segment length the detection rate rose to 16/16