A significant improvement to my system that gave more body and weight to the sound was a dedicated power conditioner for the digital only (transport & dac). The one I'm using is a balanced type. Even though the owner's manual said that changing the power cord wouldn't make a difference, a better cable proved them wrong. Finally, a speaker cable that worked poorly with an old set of speakers, works fantastically with my new ones. Not lean any more. But, it took about 6 months of experimenting to find a synergy that worked for my ear. (Also, I suggest putting the amp on isolation footers of some kind.)
