Quicksilver Preamps?

Some of the purist QS fans like the non-remote version claiming it sounds better.  Have friends with both and they like them.  Put really good caps in it and some nice tubes and decent interconnects and you'll enjoy it for many years. When you are done, someone will take it off your hands willingly.  

@oddiofyl fortunately some of the builders like mike at QS and a few others realized a while back the supply of good 12AX7s was drying up and others such as 12AT7, 12AU7 are more plentiful both NOS and new-manufacture too.

I popped out my 60s Blackburn Mullards and tried a pair of the new PSVANEs and they sound pretty good for new tubes, much better than than the stock EI Yugo and JJs that came in my QS amps stock. Fun to run the PSVANE for a while to mothball some of the more rare Mullards as a backup option. As you noted better tubes can make a nice difference.