Hey Will:

I don't know of anything in the 950 that can get rid of the harshness. I sensed it more of a 'hardness' or 'glassiness'. Playing with the treble, if it works for you, then there's no reason not to do that, as I don't think that any artifacts would be introduced. If your speakers have a mid-range level control, you might try loweing that a bit; it's worked for me. In my current setup, the reason I use all vacuum tube gear is to overcome the hardness that sometimes creeps into digital audio. Plus toobs just look cool glowing in a darkened room - kinda like candles, but without the fire hazard...