I have only tried 2 solutions, and I am using an Esoteric K-01XS player, not a Grandioso K1. The first was the Transparent Power Cord Source, which was a great improvement. Note that I have a dedicated mainline and an audiophile receptacle (FWIW).
I compared this to a combination of a Nordost Frey 2 power with the Nordost QBase 4 MK1. The latter made an astonishing improvement in dynamic range and the 3D nature of the sound. I also use Shunyata Sigma XLR interconnects.
I think that systems are different and there may not be a perfect solution, but I was quite stunned to find that AC power cords could make such a substantial improvement in sound quality.
Thanks - Gerry
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