6973 - Beam Power Tetrode. B9A base. Popular in old school amplifiers such as: Ampex, Supro, Magnatone, Wawa, Goodsell, Valpro, Valco, Gretsch, Silvertone. Also used as a driver in a Leslie rotating speaker.

Similar specs to an EL84, 6BQ5, CV4055, 6P14P, 6P1P, with a different pinout.

AMPLITREX tested in house.

Pickup available, by appointment.