Corelli - really????

I have been using the Corelli for about 8 months now. I find that using a high end (UPOCC) short power cable is best as well as plugging it at an outlet or power bar that actually supplies the source, pre-amp and amp . I use a DIY 0.5m Furutech 16 gauge cable with Furutech connectors at both ends. According to the manufactures the Corelli mainly addresses the higher frequency noises. They also recommend adding the Akiko DIY Harmonizer at the main breaker panel to enhance the Corelli's performance further. I find the combo of the Corelli and the Harmonizer does provide a blacker background than the Corelli by itself. I have experimented enough to conclude that the Harmonizer has a greater beneficial effect than the type of power cord used. I have been wondering as to why the Harmonizer at a remote place (power mains panel) would do this. I think it is possibly because this is where the ground and the neutral lines meet and the harmonizer prevents backwashing of noise from the ground into the neutral. To address the full spectrum of noise (high frequency as well as low frequency noise) I use active power (non-limiting) power conditioning for low frequency noises in addition to the Corelli which is a passive device that addresses the high frequency noises in the power lines. The combination of all these devices have reduced my background noise to such low levels that my volume setting on my amplifier is about 10 to 20 % lower for the same sound output levels (great for tube amplifiers with limited power) and as well micro details not heard before are now apparent.