Additional Preamp Tubes

I had the BHK preamp for a while and used the tubes mentioned previously, i.e., Brimar, Mullard and RCA.  I tend to like a warmer rather than analytical sound.  I purchased the Mullards when it was easy to deal with the UK.  It was when I stumbled upon and tried RCA black plate triple mica that I was happiest.  It provided warmth, clarity and bounce, allowed the highs to come through but nice and round in the mids and bass, much to my liking.  And, it was around half the price of the others.

I changed my system completely since then, and found the Amperex was a good match after the change.  The good news is there are options, but it's your ears that need to be happy.

If anybody is still listening, you might consider some new production tubes. Ray's Select 12au7 are nicely balanced tubes. I also tried new production Mullards. Currently I am using PSVane Horizons (GASP!) in my Backert Labs Rhythm. If you want a more controlled sound with lots of depth, give them a try. At 65$ pair from Amazon (Gasp again!!) not much to lose. 

+1 on Psvane!  I've had terrific luck with Psvane tubes.  For new production tubes, they come pretty damn close to NOS, (and sometimes better).  Highly recommended.

Still listening. My BHK pre came preloaded with PSVane tubes. Since I already had my current tubes from my Rouge RP1 that matched my BHK (part of the reason I bought the BHK), I changed them out pretty quickly. 
Most modern tubes are Russian, and refuse to buy Russian, even if they were the best… and IMHO they are not. 
My NOS Mullards arrive from the UK on or about the 22nd. I look forward to trying them. Thanks

Slava Ukraini! 🇺🇦