In my system I had an 861 which I used as a DAC/PRE as you are, then added an ARC LS26 and found it to be a large improvement.
If you need a processor to serve as a 2-channel pre-amp I'd say Meridian is near the top of the heap, but it still falls well short of a dedicated 2-channel pre-amp in my experience.
What I gained? Improved sound-stage (width and especially depth) as well as texture - specifically in the midrange/vocals.
If you can being one home to compare I think you will find your answer quickly. Good luck with the search!
If you need a processor to serve as a 2-channel pre-amp I'd say Meridian is near the top of the heap, but it still falls well short of a dedicated 2-channel pre-amp in my experience.
What I gained? Improved sound-stage (width and especially depth) as well as texture - specifically in the midrange/vocals.
If you can being one home to compare I think you will find your answer quickly. Good luck with the search!