This listing is for two NOS 12AU6 tubes by various USA brands.
This Tube Test NEW 100% and Passes life test.
The 12AU6 is a pentode amplifier having a sharp cut-off control characteristic using the miniature construction. With high transconductance, low grid-plate capacitance, it is intended for service as either an RF or AF amplifier.
Except for heater ratings, the 12AU6 is identical to the 6AU6.