The JJ ECC83S / 12AX7 Preamp Vacuum Tubes provide harmonically rich sound with low noise and microphonics. With its balanced midrange, it brings exceptional clarity and warmth to any amplifier, allowing for a detailed low end and warm high end. Upgrade your sound with this high gain pre-amplifying double triode.

All Ruby Tubes are pre-sorted, tested, and burned in. You can count on these for quality assurance!

6 month warranty on all tubes.