Sovtek 12AX7WXT ECC83 Russian Vacuum Tube - Closely Balanced B&K 747 Tested
$34.95
Genuine Sovtek 12AX7WXT high-gain dual-triode vacuum tube manufactured in Russia. This tube has the original Sovtek markings, including a visible 98 production marking, and is suitable for guitar amplifiers, hi-fi equipment, tube preamplifiers, driver stages, and phase-inverter circuits.
This individual tube was bench tested on a B&K Model 747 Dynamic Mutual Conductance Tube Tester. Both triode sections tested strongly within the GOOD range at approximately 90 on the tester scale. The two sections produced nearly identical readings and are closely balanced.
The 12AX7WXT is a nine-pin high-mu dual triode compatible with many circuits designed for the 12AX7 and ECC83 tube families. The tube shown in the photographs is the actual tube being sold.
Historical Note: Sovtek introduced Russian-manufactured vacuum tubes to the international guitar-amplifier and audio markets during the late twentieth century. The 12AX7WXT was one of the company’s earlier high-gain preamplifier-tube variants and is commonly associated with amplifiers and replacement-tube production from the 1990s. This tube carries a visible 98 marking consistent with that period.
Origin Tracker
Bench Stock
Pulled from RF Boneyard bench/service stock for practical repair and restoration use.
Pipeline quantities are informational and may change after arrival, inspection, sorting, testing, or donor teardown.
Compatible Radios / Boards
Compatible with equipment designed for 12AX7, 12AX7A, ECC83, 7025, and equivalent nine-pin high-gain dual-triode vacuum tubes where circuit requirements permit. Common applications include guitar amplifiers, bass amplifiers, hi-fi amplifiers, stereo equipment, tube preamplifiers, microphone preamps, driver stages, and phase-inverter circuits. Buyer should verify the required tube type before installation.
RF Boneyard Bench Notes
Tested on a B&K Model 747 Dynamic Mutual Conductance Tube Tester. Triode Section 1 tested at approximately 90 within the GOOD range. Triode Section 2 tested at approximately 90 within the GOOD range. Both triode sections produced nearly identical readings and are closely balanced. Heater operation confirmed and no shorts indication was observed during testing. Actual tube and test photographs are included.
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