Tube #1 tested 300/300 Tube #2 tested 325/325 on Hickok 752A, minimum is 200.

The 752A gives a low reading for the 12AX7. Ribbed Gray plates with large halo getter

Rogers 12AX7 ECC83 Vacuum Tube Matched Pair

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Tested 2040/2440 on Hickok 752A, where the minimum is 1600/1600Clear Top Tall Bottle, Black Plate, B..

$19.99 USD

Tested 350/375 on Hickok 752A where minimum is 200. The 752A is noted for giving a low reading ..

$16.99 USD

Tested 350/325 on Hickok 752A where minimum is 200. The 752A is noted for giving a low reading ..

$39.99 USD

Tested 3100/3100 on Hickok 752A, where the minimum is 1600/1600Dual Triode with balanced test result..

$24.99 USD

Tested 825/875 mhos on Hickok 752A, minimum new is 475Made in England with gray plates and top halo ..

$34.99 USD

Tested 325/325 on Hickok 752A where minimum is 200. The 752A is noted for giving a low reading ..

$29.99 USD

NOS Westinghouse Premium tube. Test reading is 1125 mhos on Hickok 752A, where the minimum new ..

$34.99 USD