First tube preamp recommendations (under $5k)


Right now have di20he -> terminator -> he9 -> pass x350.8 -> ATC scm7 / NS5000.
I am thinking of introducing some tubes into my chain. I like the sound I am getting but want to explore what tubes can do to the sound (slight warmth, biggest soundstage, better layering etc etc). Don’t want to go to nuts on price. If price is over $5k would consider if its really exceptional (but for sure not over $10k). Totally fine with used. Balanced would be nice but not mandatory.
So far I am thinking RP7, EVO400, bhk. Any thoughts?
smodtactical
@ghdprentice Thank you for your sage and kind comments man. It makes me feel good that I made the right decision. I really look forward to my first experience with tubes :D
What does the rest of your system look like ?
great pick in the REF5se ! A superb pre.

I have 5k trouble free happy hours on mine. Pay attention to the Power Supply tube hours and upgrade to a nos USA made Tung Sol when you need to change.

The ARC massive as it is, likes vibration isolation, I use HRS under mine.

https://systems.audiogon.com/systems/3803
@tomic601 thanks man ! Appreciate the tips
@ghdprentice beautiful systems! Truly end game