For your kind consideration is this Magnavox branded Mullard 12DW7 preamp tube. These are a must have for your vintage Ampeg SVT and V4 heads. Enjoy!
Tested on our calibrated Hickok 533A and reads Good on the Good/Bad scale on both Normal and Life Test settings. Passes tests for shorts and gas. Mutual Conductance reads at 1600 for side 1 with 1250 being considered new & 2200 for side 2 with 2200 being considered new. Overall this is a strong tube.
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