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Tube type: |
Double Triode Universal |
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Tube ID = 20563
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| Identical to |
7308 = E188CC
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| Similar
Tubes |
Multiple differences or of other kind:
6922; 6922WA
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| Base |
Noval, B9A
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| Filament |
Vf 6.3 Volts / If: 0.335 Ampere / -: Indirect / -: Parallel, (AC/DC) / |
| Description |
Premium variant of 6922. Low microphonics, 10.000-hr life; heater current increased to 335mA
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| Tube prices |
0 Tube prices (visible for members
only)
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| Literature |
Röhren-Taschen-Tabelle 14.A, (Franzis RTT)
- - Manufacturers Literature
Tube Lore, Sibley, USA 1996
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Private collection
Emilio Ciardiello
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RTT Schwandt
Günther Stabe
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Siemens Röhrentaschenbuch 1972
Michael Schlör
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