The only time I get infrequent high frequency distortion/edge/glare revealed by my D7's is with a digital stream in my system. It never appears with vinyl. I use an Auralic Vega G1 and I suspect I'd need to move higher up in the market to get something digitally with a more organic presentation. The thing is that I have zero interest in putting money into a digital front end. Sure, it sounds pretty dang good but I use it mainly to explore new music and find new ideas for purchase on vinyl...or as background music while I'm working around the house.
I would be curious among this group whether they notice the strident tone only with digital as well.
I've got a PS Audio Directstream with the Bridge II streamer. I am not hearing digital as being the problem. The same recordings on Vinyl have the same results for me.