The Sylvania 7025 Grey Plate Vacuum tube is a miniature
type used as a phase inverter or
resistance-coupled amplifier in high-quality,
high-fidelity audio amplifiers. It requires a miniature
9-contact socket. This type is identical to type
12AX7A except that it has a controlled equivalent
noise and hum characteristic. This tube is also a main
stay in many Guitar and Bass Amplifiers.
Preferred Substitutes.... 12AX7, 12AX7A, 12DF7 12DM7
Substitutes ................................... 12AD7
Electrical Data:
Heater Voltage ................................ 6.3/12.6 V
Heater Current ................................ 0.3/0.15 A
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