#109(5) MATCHED NOS SLEEVE PHILIPS JAN 5814A 12AU7W VACUUM TUBES,MAXI TESTED
All tubes are JAN (Joint Army Navy) USA military Surplus tubes, military part # 5960-00-262-0210. The 5814A is a ruggedized. military spec, “computer” rated precision version of the 12AU7 with the heater current raised from 150 ma to 175 ma.
