Hi! I hope all is going well with you too.
To answer your question: Without the preamp most everything sounds very good, but is missing something. That something is the high frequencies and, to an extent, soundstaging. And, on some things I think it actually sounds a little better that way. With most things though it lacks a certain presence and excitement.
No preamp in system
I want to point out how the perception of our equipment changes over time. I’m getting so use to the sound of my system without a preamp (which is out for repair) to the point that I’m accepting it as good sound. It reveals something about our hobby. When we get new equipment we often say “let it break in.” And lo and behold, it sounds much better over time. Is it that were really fooling ourselves, and that it’s simply a matter of us getting use to it?
Just food for thought.