6973 RCA Beam Power Amplifier Tube. Designed to be used in hi fidelity audio amplifiers. New old stock. No longer available for export. MFR: RCA. SKU: 6973.
Electro Harmonix 6973 VALVE AMP TUBES MELBOURNE AUSTRALIA
6973 VS 6CZ5 substitute | diyAudio
💥💥 SUPER RARE Sylvania 6973 Power Tubes For Supro Amps & Others TEST ANOS w/ Orig Boxes NOT CHEAP SUBS! 💥💥 | Reverb Canada