Ecc82 double triode valve edicron ecc82 radio frequency twin triode triode valve b9a novel base 12 6v heater voltage 150ma heater current 10 5ma anode current 250v anode voltage 22mm diameter its low microphony make it particularly suited to low level audio applications intended for oscillator or amplifier applications such as phase splitter cathode follower etc edicron ecc82 jj double triode valve