From Habr:
XXX: This is like an anecdote about a taxi – you have to take a taxi or go? If you need an accurate transmission, look at the numbers (ACCH, THD, etc.). If you want a good sound, listen with your ears. The second is partly a psychological effect, so it cannot be measured.
YYY: The Ohga Because of the fact that the effect is psychological so well and sold golden wires with sockets for 10 thousand each :)
XXX: And this is already a psychiatric effect.