Some info on the gain characteristics of the "12" family of 9 pin miniature tubes:(http://thetubestore.com/gainfactor.html) I would suggest some of the better/quieter, and longer lasting, European varieties(NOS- Siemens, Teles, Valvo, Amperex, Mullard). I've listed them, in order, from most transparent, to warmer/tubier. YES- Each manufacturer has a characteristic sound, in MOST gain circuits, regardless of the actual iteration.
Inherent Difference - 12AU7 and a 12AT7
Can anyone school me on the practical differences between a 12AU7 and a 12AT7 input tube when used in a preamp? For example, all things equal is one of these tubes quieter than the other on average, does one have greater gain than the other, and is there any characteristic 'sound' to each of these tubes?
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- 13 posts total
- 13 posts total