9 pin miniature preamp tube (Amplification Factor = 100). This Slovakian tube is full bodied and bright with lots of depth and color. It's like the 12AX7-S-JJ on steroids, keeping the definition and adding a lot of bite and brightness. In overdrive, it keeps its well defined bite and brings out the highs.
For more information about our 12AX7 tubes, see our tech corner article on 12AX7s.