Russian Rockets
Made in RUSSIA
The Russian inscription is " EB ".
"E" designator means ~ extended life.
"B" designator means ~ improved mechanical construction).
The English Translation is " EV ".
E - for long - lived (up to 5000 hours and more) tubes.
V - for mechanically improved tubes.
They have chrome plated pins.
6H2N - EB (EV) /
6N2P - EB (EV) are NOT 12AX7's!
6H2N - EB (EV) / 6N2P - EB (EV) are a 6 volt tube. 12AX7's are a 12 volt tube.
To use these as 12AX7 replacements you have to wire two tubes in series to get the 12 volt equivalent.
The 6H2N-EB Vacuum tube, also known as a 6N2P tube has a
slightly higher gm then the 12AX7 / ECC83,
giving it more power and authority than the 12AX7 / ECC83.
6H2N - EB (EV) / 6N2P - EB (EV) tubes make great replacements when re-wired.
6H2N - EB (EV) / 6N2P - EB (EV) are Low-microphonic double triodes; close by characteristics
to the ECC83 ~ 12AX7. They have the same pinout only the
filament is 6.3 Volts and they draw about 0.34 Amps filament current)
These can easily be rewired.
These tubes are used extensively in Red Bear guitar
amplifiers.
Electrical Data:
Heater Voltage .................... 6.3
Heater Current .................... 0.34 A
Preferred Substitutes .......... 6AX7, 6H2N,
6H2Npi, 6N2, 6N2P, 6N2P-EV, 6N2P-EB, 6N2pi
Substitutes when rewired .............12AX7,ECC88.