Whats the best and quietest 12AX7 tube


I get tube rush at 12 oclock from my new Rogue 99 preamp phono stage.The input tubes in it now are sovteks.What 12AX7 is very quiet and microphonic free? THANKS!
david99
Telefunkens are great, but I recently replaced my stock 12AX7 with a Heintz & Kaufman Gammatron, made in the USA. Just great. Fast and almost as musical as Tele's. Application will dictate, so experiment.
Telefunken 12AX7 are the best. The best for money are Ei Yugo 12AX7. I had ones selected by Ken Stevens of CAT...quit, musical, involving etc
The best I've heard, but try finding an original (be careful because I've seen rebranded, GE versions) was a Philips 6681-12AX7.