High-Mu Twin Triode * * * * *
Manufactured 1970-1972
Made in the U.S.A..
The Amperex 12AX7A Vacuum Tube is a miniature Low Noise
type used as a phase inverter or amplifier
in high end guitar Amplifiers and audio gear, AC/DC radio
equipment and in many diversified
applications such a multivibrators or oscillators in
industrial control devices. They require a noval
9-contact socket.
This tube is a main stay in many
recording studio Guitar and Bass Amplifiers. They are also
widely used in recording studio Outboard gear such as Mic
preamps and such.
Amperex tubes are some of the best tubes you can get
and are getting hard to find.
This is one of the Altimate 12AX7 Vacuum Tubes
for Amplifiers!
They are some of the Best out there!
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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on 12AX7's