5 Pack! 

The JJ ECC83S / 12AX7A CZ HG is a highly reliable and consistent vacuum tube, thoroughly tested by Ruby Tubes making it one of the best options available. It offers exceptional quality for its price point, making it the top choice for both professionals and enthusiasts alike. The JJ 12AX7 is a high gain pre-amplifying double triode allowing it to perform with very low noise and microphonics. Harmonically rich, with a detailed low end and a warm high end.