jbuhl
Interesting conversation. I've been moving in the opposite direction. I have a very nice DAC from Ayre, QX-5, which has the option of using it as a preamp as well. For the last two years I didn't even bother trying this option, as following common knowledge I decided to use my old preamp (also from Ayre) instead. I recently tried using the DAC in PRE mode. Maybe I shouldn't have done it.
I immediately noticed more resolution, which is very obvious in loud orchestral passages. It just brings a degree of detail that I was not getting before. My Ayre dac, K-5xe, is famous for its warm, robust sound, and I do miss that sometimes. I think depending on the type of music, one characteristic can be more desirable than other. I would characterize the sound coming from the DAC in PRE as analitical. But what does that mean? Lack of coloration as others have pointed out?
So from my experience, it all depends what you are comparing.
Nathan