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
I am using the PrimaLuna EVO 100 Preamp. $2199. My amplifiers are solid state so the 8 tubes that the Primaluna provides gives me the fuller sound that solid state pre-amps cannot create - at least at this price point. I will admit that the first 50 hours or so were a bit dull and "veiled". It simply took a fair amount of time for the preamp to open up.  

I debated between the PrimaLuna and the Rogue RP-7, but felt the RP-7 may not give me enough of the tube experience as it only uses 2 tubes. The remote control is excellent but the RP-7 provides a number (ie gauge) to your volume and the PrimaLuna does not. I downloaded a free decibel meter to my phone and that solved the issue. I now know when the volume knob is above a certain point it is probably too loud. 

Another reason I like it beside the sound is that the PrimaLuna does not get hot and only gets "warm at best". Even after 5 or 6 hours of play. Both my solid state amps stay fairly cool as well so it fits right in with my prerequisite of not heating up my room as I listen.
@tomic601
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Sweet doggy. We had a pair of black labs a long time ago… loved them very much. You have a house full of beautiful systems as well. I had Apogee’s for many years.
I'm gonna throw in on the EVO400 as well.  Been running mine now for about a year.  What a fantastic piece of gear.  (I have it paired with an MC-312).

I "tried" to buy a 2600 from a dealer in the area (gently used) and when I told him my setup... he suggested: "Go do some homework on Prima... and ignore the loud guy on the videos".  <giggle>

Found that Sandy Gross himself had used one with a Mac amp to do some demos of some gear at an Axpona.  Mind you i'm not a six-figure spender for gear... but all my stuff sits right about $4000 a piece... a perfect fit.