Dac to remove Digital Glare/ edge

Using good cables across the system did it for me.

Perhaps the power cable on the DAC made the biggest improvement as far as removing glare.

But if your DAC has a good power supply, you might want to try some different  IC's

Do you only listen to HiFi recordings ? If not you need a pro audio dac . HiFi companies love to boost high frequencies for the illusion of sounding more dynamic ,sparkle Whatever verbage you want to add  . HiFi dac makers turn 75% of your music into unlistenable shrill . Sounds great with HiFI recordings .... 

I second larry's suggestion. I have an expensive player, and it sounds just plain ugly compared to my analogue gear. But, with isolation transformers on each channel, it is quite listenable, even enjoyable.

The trick is to use isolation transformers which attenuate the high frequencies, but not too much. I use car audio transformers: 1st Source GL100 Ground Loop Isolator. They are inexpensive.

Resonessence  mirus dac. Has 8 different filters on it. Three of them remove Crappy highs 

Chord Hugo TT. A bit on the dark side but beautifully so.
Beautifully dark is the best way to put it. Great for rock/pop/shrillness in vocals or upper mids in general, but still full of life and addictive.