Need preamp recommendation

Concert Fidelity tube preamp is one of the greatest preamps produced.

check out reviews.

here is one for sale - great price.
https://www.usaudiomart.com/details/649437258-concert-fidelity-cf080ls-tube-preamplifier/

If you want to blend in tubes look at the Rogue RP-5 $3.5k new and see if the numbers match up with what you need.  If you need balanced then look at the RP-7 used .  YOu might catch people moving off the 7 up to the 9. Then you can start rolling tubes which is fun.

Rogue gots good customer service as well.

https://www.stereophile.com/content/rogue-audio-rp-7-line-preamplifier-specifications

I'll second mboldda1's recommendation.  I have a DeHavilland Ultraverve (mk1 I guess) that's been great for me for over a decade.

those two mx110z's: one may not be OEM walnut case, verify with seller if it matters.

+1 on Don Sachs preamp, this is an outstanding preamp and can compete with or even better than other more expensive preamps. I bought the LTA preamp and returned it after one week. It has a nice clarity but there’s no warmth that you get from a tube preamp or even my solid state Jeff Rowland preamp.