Vacuum Tube - 12AU6, Pentode, Sharp Cut-Off
New-Old-Stock (NOS) tube.
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 12AU6.