And as far as the cables go, while it might not be needed but you're not going to hook up a pair of Sony cables or the like when you are trying to achieve the best possible sound even if you cannot hear it (hence what most audiophiles do; they waste lots of money to achieve sound nirvana).
If you have several thousand invested in audio equipment, whats another $1600 for a cable? Even if it is subjective, a perceived difference in sound just from getting a "expensive cable" will make it all worth it in the end to an Audiophile.
EDIT:
http://www.doublehelixcables.com/ is the site, read through some of the stuff on there.
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