Note from Manufacturer:
Based on the design of composite metal screen, the anode will be slightly reddish in operation. This is a normal phenomenon.
It takes at least 50 hours for the sound to gradually stabilize and it may take 150 hours or more to reach the state of perfection.
Heater
Uf(DC)……………… 5 V
If(DC) …………… 1.2 A
Maximum Rating
Ua…………… 480 V
Pa……… 40 W
Ik
with cathode bias……… 100 mA
with fixed bias…………… 70 mA
Direct Interelectrode Capacitances
input…………… 9 PF
output…………… 4.3 PF
grid to plate…………… 15 PF
Static parameter
Ua……………… 300 V
-Ug…………… 60 V
Ia……………… 60 mA
Gm…………… 5.5 mA/V
ri……………… 0.7 KΩ
u ……………… 3.85
Pout…………… 6.6 W
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