Tested 350/345 on Hickok 752A minimum is 200. The 752A is noted for giving a low

reading for the 12AX7. Blackburn made tube, code is B5D2. Ribbed grey plates, Halo getter

Mullard ECC83 12AX7 ECC83 Vacuum Tube

Qty

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

$19.99 USD

Tested 375/400 on Hickok 752A where minimum is 200. The 752A is noted for giving a low reading ..

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

$17.99 USD

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

$24.99 USD

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

$39.99 USD

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

$29.99 USD

Uprated 6BQ5 tubes Tested 825 & 850 µmhos on Hickok 752A. Minimum is 575 Made in Canada, l..

$89.99 USD

Tested strong at 350/350 on Hickok 752A, minimum is 275. The 752A gives low readingsfor the 12A..

$44.99 USD

Tubes tested New: 1000, 1025, 1025 & 1100 µmhos on Hickok 752A. Minimum is 700Same date codes, J..

$17.99 USD

New Old Stock tube in original box. Tested on Hickok 752A ..

$44.99 USD

Perfectly balanced and matched at 350, where 200 is minimum on on Hickok 752AHalo getter with ribbed..

$64.99 USD

Tested using Hickok 752A: Westinghouse 725 and Rogers 625Minimum is 575. The Rogers has an engraved ..

$159.99 USD