Mullard 12AX7/ECC83 Matched Trio (f91 B8D revision) 1958 - Long Plates Goalpost Halo Getter
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Up for grabs, we have a 1958 matching code matching strength matching condition trio of Mullard f91 B8D revision long plate goalpost halo getter 12AX7/ECC83 vintage preamp tubes.
These tubes were all tested for leaks, shorts, and quality/emissions issues. They all tested great
The tubes were tested on a mercury model 1000 which is calibrated and the nominal given test data for this Tube type is 1000 µ℧ +/- 10%
And as you can see from the pictures, these tubes are testing in the 900 µ℧ range with one a little bit lower at 800 µ℧, and 825 µ℧ on its two lines respectively.
so these tubes are all testing around 88% to 92% and they’re tightly matched
They all also have matching codes of 148 for batch codes and matching production and date codes of
f91
B8D
Making these all 1958 early Mullard Blackburn factory,long plate tubes in exceptional condition.
This item is sold As-Described
This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.
| Listed | 16 hours ago |
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| Condition | Excellent (Used) Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more |
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