Brent Jessee at Brent Jessee Recording will give you good recommendations and has a large stock and will offer an optional warranty on your tubes (not a bad idea with NOS tubes).
12AX7 replacement
It’s time to replace my tubes in my preamp. I’m looking for some suggestions as to specific brand performance and or where to purchase. There are a total of 8 all 12AX7. I believe 3 are for phono and the rest are for preamp and tone control circuits. Thanks in advance for your opinions.