Pair of Sylvania JHS 12AX7 ECC83 vacuum tube
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.Tested at: 74/75 plate current 8.11/8.3
Average new: 53/53
Minimum good: 32/32
The minimum is equal to 65% of the life of the tube.
Tested for shorts and gas.
Date code: 920Construction: short gray plate square getter copper rods
Glass: clear
Base: -
30-day free return.
We combine shipping $1.00 for each extra tube purchase.Your items will be packed very well and shipped promptly.
Always glad to answer any questions.
Thanks for looking!