The quote below comes from
this post, which 2x6 either ignored or simply didn't see:
In reply to:
... you cannot definitively say that Unit A sounds different/better/worse than Unit B without taking care to do the tests in a way that prevents the tester's bias from influencing the results -- that bias includes both your opposition's bias towards uniformity of sound AND your own bias towards non-uniformity.
That is all I would like you to acknowledge. Just say the word and this whole ordeal can go away.
The statement applies to comparing and then making a qualitative judgment about any audio component, whether it be a cable, receiver, amplifier, etc. Double-blind testing does not favor either side of the debate. Keep in mind that any such test can and should be performed by listening to music with your own ears.
So my question is this:
Do you agree or disagree that double-blind testing is necessary before one can make an unbiased ranking judgment (better than / worse than / same as) about an audio component? 
