The 12AX7B Vacuum Tube is a miniature type used
as a phase inverter or amplifier in AC / DC radio equipment
and in many diversified applications such a
multivibrators or oscillators in industrial control
devices. This particular tube is manufactured in China.
They require a noval 9-contact socket. This
tube is also a main stay in many Guitar and Bass
Amplifiers. They are excellent for high gain amplifiers
where more overdrive is desired with less noise.
The 12AX7B typically has more overdrive potential than a
new production 12AX7A. It also is a warmer sounding tube.
Electrical Data:
Heater Voltage ........................ 6.3/12.6 V
Heater Current ........................ 0.3/0.15 A
Preferred Substitutes ...... 12DF7, 12DM7, ECC83
Substitutes ............................ 12AD7
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