Quite often the bottom line differences between good quality and the lunatic fringe audio products doesn't make worthwhile sonic improvements to humar ears. The improvements may be measured and proven via quality test equipment and setups, but to the average listener, or even the trained ear for that matter, any sonic improvements heard are likely subjective from the listener.
I can sell an audiophile two 12 foot lengths of good speaker wire for $200, pocket $100 for my efforts, and that person will not likely hear the difference between my scam and an even more ridiculous one of $7200 wires! You can bet on the fact that if I went out and spent $7200 on speaker wires, I would immediately notice an improvement... a subjective one that is. Not much more than false rationale for overspending on a questionable need to begin with! I'd rather spend that tidy sum on higher end audio components where some real sonic improvements can definitely be heard. The D/A converter stage in digital audio is crucial to what we hear through the speakers. Spend money on a very good D/A stage and ultra low noise power supplies, not so much on $7200 wires!