Vacuum Tube - 12AU7A / ECC82, Triode, Dual, Medium MU
New-Old-Stock (NOS) tube.
The 12AU7-A is a miniature medium-mu twin triode intended for service in radio and television receivers or in audio amplifiers. The tube is suitable for use in a variety of stages, such as general-purpose amplifier, phase inverter, oscillator, or multivibrator.
The electrical characteristics of the 12AU7-A and 12AU7 are essentially equivalent. As compared to the 12AU7, the 12AU7-A exhibits a lower microphonic output.