12-09-13: Ptss
"Jafant. It's not that I 'want' to change the power supply-- I'm just searching for ways to "improve" the detail, nuance' perhaps lower the sound floor, provide a little more dynamics. I appreciate finding economical ways of improving sound."
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This product would be right up your alley...the Akiko Audio Tuning Sticks.
Pluging the 'ac stick' into the dedicated outlet feeding my system did exactly what you quoted above,its a wonderful tweak.Highly recommended,I'm sure you will not be disapointed.