Mesa Boogie 12AX7

The MESA 12AX7 provides the maximum level of high gain output and overall tonal quality with unsurpassed consistency and reliability. They possess a smooth and balanced response across the tonal spectrum and are extremely lively, open and expressive.
Stock preamp tube for all MESA/Boogie Guitar & Bass Amps, Preamps, Power Amps, V1 & V-Twin Pedals