12AU7
The 12AU7 (ECC82) is a twin medium-μ triode tube with a center-tapped filament for use in either 6.3 V / 300 mA or 12.6 V / 150 mA heater circuits.
The 5814 is similar.
The 12AU7 (ECC82) is a twin medium-μ triode tube with a center-tapped filament for use in either 6.3 V / 300 mA or 12.6 V / 150 mA heater circuits.
The 5814 is similar.