I have had my system for close to a year. I feel it is nicely put together and borders on the high-end. I have yet to begin investigating various cable choices. I also have a Shumann Resonance unit, ( dont want to un-tape it from it's suggested position on the wall of six feet above and between the speakers, to say which one it is... the black one), Quantum Symphony Pro, Furutech CD-2 demagnetizer, ( all purchased here).
Now, I had been told by a few very well respected musicians that they feel that I have perfect pitch. Also my hearing is very good for my age.
The fore mentioned tweaks don't seem to make a difference to me.
I am too busy enjoying great music.