New production 12AX7 / ECC83 is the New Sensor reissue of the famous Mullard 12AX7.
Russion-made Mullard Reissue 12AX7 dual triode. Large sound stage with excellent detail. Factory selected for low noise and microphonics. Excellent for use in high gain Marshall pre-amplifier circuits where noise and microphonics can be a problem. Great for guitar amps.