Darryl --
What is your set-up, how long have you had it, and
what sort of digital nasties are you experiencing?
A few weeks ago, I added Krell FPB 350 MCX monos
to my system and started experiencing some harsh-ness in the high end.
I've done a few things and it has largely disappeared.
I ran my Krells non-stop for a few days, started leaving
them on all the time, never turning them off. I bought
them used so I thought they were broken in, but they
are still improving.
My speakers have two upper and two lower binding
posts. I was plugging my speaker cables into the
top posts, but I switched to the bottoms.
I towed my speakers in a few inches.
I added a Blue Circle Noise Hound to the circuit
to which my CD player and pre-amp are connected.
Not sure which of these caused the most improvement, but the harshness is gone and the system is sounding great.