sonstige Doppeltrioden

Noval B9A 9-Pin base, Uf=6,3V/0,9A
System 1: close to 12AX7/ECC83 but little lower Gain

Noval base
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Noval B9A 9-Pin base
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Noval B9A 9-Pin base
close to 6BZ7/6BQ7A
Heater Voltage is 4V -> good solution for A s...

Noval B9A 9-Pin tube-valve-base-Röhrensockel
very rare Audio tube (mostly produced by TFK wi...

Noval B9A 9-Pin tube-valve-base
close to 12AX7/ECC83 but No53 base (Pin4-5 = 6,3V not 12,6V) ...

Noval B9A 9-Pin tube-valve-base-Röhrensockel
please ask for brands and prices
ECC 85N...

Noval (No53) B9A 9-Pin base
same Pinout than E88 CC-6922-6DJ8-6N1P-ECC85
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Noval B9A 9-Pin tube-valve-base-Röhrensockel
very rare type
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