Favorites are system and listener taste dependent.
My favorite in my current preamp is a 12AU7 variant, the made in Heerlen, Holland Amperex 7316. Amperex was also owned by Phillips. It is not wimpy either.
If anyone is going to switch one type of tube (say a 12AX7) for another (say a 12AT7) check with the maker of your gear. Different types of tubes have different electrical characteristics and you can’t just substitute them one for another.
Tungsten, Siemes, Philips = same tube.No they’re not. Phillips owned Siemens but Tungsol, Tungsram, Siemens and Phillips are different tubes, I can assure you.
My favorite in my current preamp is a 12AU7 variant, the made in Heerlen, Holland Amperex 7316. Amperex was also owned by Phillips. It is not wimpy either.
If anyone is going to switch one type of tube (say a 12AX7) for another (say a 12AT7) check with the maker of your gear. Different types of tubes have different electrical characteristics and you can’t just substitute them one for another.