Vacuum Tube - 12AX7WB, Sovtek

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Vacuum Tube - 12AX7WB, Sovtek

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Sovtek 12AX7WB dual triode.

RoHS Compliant
Item ID:
Product Measurements by Type
Amplification Factor95 -110
Bulb Temperature95°C
Capacitance, Plate to Plate0.4 nF
Capacitance, Transfer0.55 nF
Capacitance, input2.15 nF
Capacitance, output1.9 nF
Cathode to Heater Voltage100 V
Grid Reverse Current0.2 μA
Heater Current305 / 153 mA
Heater Voltage6.0 - 6.6 V / 12.0 - 13.2 V
Plate Current (Ia)10 mA
Plate Dissipation, per triode (Wa)1.0 W
Plate Voltage (Ua)300 V
Transconductance (S)1.4 mA/V - 2.65 mA/V
Packaging Information
Packaging Dimensions0.868 in. × 0.868 in. × 2.137 in.
Weight (Packaging)0.05 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet532.23 KB

Questions and Answers

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Asked by Anonymous on July 19th, 2017.
Matt H
July 19th, 2017
Yes, this is a nice tube and would be good in a guitar amp.
Asked by Anonymous on July 26th, 2018.
July 26th, 2018
Staff Member
This tube is a great option to consider for Jazz. It has a low/medium gain rating and is noted for having a sweet, warm sound.
Asked by Anonymous on January 7th, 2021.
January 7th, 2021
Staff Member
Because tone and tube selection are both subjective in nature, it isn't possible to offer recommendations like what is being requested. Trying the tubes you mentioned based off of their EQ rating on the comparison chart is the ideal way to narrow your considered options.

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