I think all this talk about AC power and better wires is beside the point.
I think I was in a similar situation. I listen mostly to classical music and had a hard time getting a digital system to sound anywhere close to as good as my analog. Classical is audio's toughest test. I went from Philips (heavily modified) to Lavry to Oppo. Improvements, yes, but mostly they remained unused. I am interested only in 2 channel.
About 18 months ago I took a chance on a very reasonably priced Chinese import. Very large power supplies, dual ES9038 chips, discrete analog section. The DAC gave me what I wanted, a sound that was as good, though not identical, to what I was experiencing in vinyl. I have since been building around this DAC including the ripping of CDs and SACDs. I write this only to let you know that there are now DACs out there that will, I think, do what you want. I am not here trying to promote a particular DAC, as I'm sure lots of people will chime in with suggestions.
But digital has come a long way.