@ Loudspeaker7:
excellent observation.
As with all modifications and improvements proposed over time by people who seem to get more enjoyment out of playing with their system than listening to music we should first ascertain whether these people who claim to hear huge differences and indisputable improvements are also able to recognize them 10 times out of 10 in a single-blind A-B test.
No offense or polemic intended: I have been working in this field (psychoacoustics) for 40 years and have witnessed remarkable cases of aural hallucinations in comparative tests of musical instruments.