First tube preamp recommendations (under $5k)

This is a no brainer this preamp beat the very good Linear tube 
preamp, as well as a excellent Audio valve preamp this is built better then anything I have seen under $10 k . Underwood Wally carries it .this company I overlooked ,before ,but  now they are sold and serviced in the U.S .the whole line the last 2 years is totally reengineered i just bought the excellent R8 mk2 dac ,and heard this preamp with a pass labs 250 ,and the same dac I bought it was Excellent on every level ,and all top shelf relay controlled for under $3800 a Steal. You would have to spend well over 2 x the cost to come close .if I didnot just buy a new Coda integrated amp I would buy this for my 2nd system .
https://hometheaterhifi.com/reviews/amplifier/preamplifier/audio-gd-vacuum-he1-xlr-tube-preamplifier...

The vast majority of Audiophiles donot know what’s inside or the parts quality,did you know on average only 25% of your amp,or preamp cost $ is all that goes into your commercial brand ? The rest overhead and markup , that's why many have their equipment modded .that's how Dan Modwright made it popular.
for tube Gear I have used Radu Tarta one of the best Vacuum tube experts in North America hand built and with Premium parts throughout that is the difference ,and  with or without remote which for a top quality resistive remote  $400 ,not like most using a cheap $25 Alps volume pot,big loss of fine detail,and transformers and chokes are the key ,Lundahl,and  Monolith ,much better precision then lesser capacitor based output stage . In this case built one at a time and 70%of the cost  go into the parts ,in name brands it’s just the opposite 30% or less 
I have  found this out years ago , He Builds low power SET amplifiers, and DHT Tube preamps, only 1 gain stage which is the purist.most have multiple stages.