Double vacuum triode — ECC83 serves to amplify low-frequency signals with full preservation of their original parameters. The radio tube is used in sound recording and sound reproducing equipment (amplifiers, phase inverters, mixers). The triode was produced from 1948 to 1960 by American companies, and currently radio tubes are produced in China, Serbia... There is a complete analogue of the military version — 2AX7.
• Voltage range supplied to the cathode glow: 5.7 — 6.9 V.
• Nominal current in the glow circuit: 0.3 A.
• Voltage at the anode in steady state: 300 V.
• Voltage at the anode when turned on: 550 V.
• Output power at the anode: 1 W.
• Operating temperature on the cylinder surface: 180 C˚.