6350
Dual Triode · IHT · 9-pin Noval · 1957
“IBM computer tube. 12AU7 cousin, tighter spec.”
Medium-gain triode for driver and line stage applications
GAIN FACTOR0
PLATE IMPEDANCE0kΩ
TRANSCONDUCTANCE0mA/V
GAIN18%
POWER6%
DRIVE96%
LINEARITY91%
EXECUTIVE SUMMARY
The 6350 is a dual indirectly-heated triode from GE·RCA, introduced around 1957. It provides a gain factor (μ) of 18 with 3900Ω plate resistance. Commonly used in preamp applications. IBM computer tube. 12AU7 cousin, tighter spec.
APPLICATIONS
Voltage amplifierLine stagePhase splitter
Generic triode preamp stage
• Hi-Fi stereo• Headphone amp
HISTORY
Introduced1957ManufacturerGE·RCAEquivalentsNone standard
Golden AgeSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.45A
Max Plate Voltage300V
Max Power2.5W
Sensitivity4.6 mA/V
Gain Factor18
Internal Impedance3.9kΩ
Pinout9-pin Noval
Era1957
RarityModerate
SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.