Best Preamp round $8000

Don’t have to drop 8K for a high quality pre.

unless you want tubes.

a great ss pre is “the preamp”
by Roger Sanders.

sanders sound systems.

roger makes an amazing little preamp.

Pass Labs B1

It will compete very nicely with 8k preamps. ModWright LS 36.5 for a lot less and later you can send it back in for the Power Supply mod. if you feel it needs it. I run mine with SR fuse,WyWires PC and a Mullard GZ34 which really makes it sing. 

I will second the VAC Renaissance V recommendation as worthwhile to consider in your investigations. Excellent musical reproduction (phono section is a nice option) and factory support even if you purchase preowned...

I recently bought a Balanced Audio Technology (BAT) VK-33 preamp.  It certainly has the tube sound I was looking for and offers very straight forward feature set that is a pleasure to work with.  My system has never sounded so good.  Their power supply is excellent.  The volume control is superb.  Retail is $7K and is a value at that price.  Look into their line, it's really a wonderful brand with an excellent design concept, throughout. USA engineered and built.  And yes, it weighs a hefty 38 lb, which is considerable for a preamp.  The BAT build quality is excellent.  Just my opinion on all stated above, of course.