Looking for inexpensive preamp

So here is the current gear
Paradigm Premier 800F most of the time, sometimes KEF R100 for SpeakersArcam FMJ P35 AmplifiersRotel 1066 Pre-amp
I feel the Rotel is currently the weak link.  Does anyone have any thoughts on a good replacement.  Not afraid of used.
I am considering going to the KEF Q750s but that is still down the road.
I like a warmer sound, I like detail but too bright and I can get annoyed.
Music ranges are all over the board.  Disturbed to Stravinsky.  Although no Rap or Opera.  Prefer Folk and acoustic.

Trying to stay under 1k $$$$