ICEPower vs SET

I have 2 sources, one Scoutmaster and a Monarchy NM24 dac. I have been listening to both on my Liang 845 SET amplifier and the analog sound so much better than digital. Actually the digital sounds so bad compared to the analog, I can't listen to it seriesly for more than a few minutes and almost gave up on it other than the convenice of digital.

But then I bought a pair of ICEpower 200ASP's, and I hooked up to my system, I tried it on my analog system first, good, but not as good as my 845. But then I hooked it to my digital, I noticed a considerable improvement compared to my 845, the digital harshness is minimized, a veil has been lifted, I have been listening to it for almost 2 weeks, and I still haven't got tired of it.

So my question, why does digital sound better on ICEPower and analog sound better on the 845 SET, it doesn't seem to make sense? Maybe somebody can shed some light on this.