Tube-number record
6KS8, 8KS8
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BrandSylvania
ClassHigh mu triode and semi-remote cutoff pentode
BaseNoval (B9A)
Filament6.3 V @ 600 mA
Construction
Primary TypeMulti-section
EnvelopeT-6.5
SectionsTriode, Pentode
Filament / Heater
Heater Notes6KS8 heater: 6.3V/600mA; 8KS8 heater: 8.0V/450mA
Absolute Maximum Ratings
Plate Voltage330 V
Grid 2 Voltage330 V
H-C Voltage200 V
Audio Performance
Key Features
- Semi-remote cutoff pentode
- Video amplifier section reduces overloading
- High mu triode section
- Coated Unipotential Cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section Class A | 200 V | 4000 | 17500 | 70 | 4 mA |
| Pentode Section Class A | 150 V | 9500 | 150000 | — | 20 mA |
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