2 x 6AU6A/EF94 Mullard Tubes. Tested on enhanced Triplet E3444 Laboratory Tester. Made in Great Britain for The Fisher. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable.
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With Settings for ECC32. Made in 1949 & 1955 in England. Matched Pair. Smoke Glass. Brown Base. Fully tested by Amplitrex AT1000 tube tester. Very strong at NOS range! Made in England.
With Settings for ECC32. 144% Emission / 115% GM. Made in England. Smoke Glass. Fully tested by Amplitrex AT1000 tube tester. Black Base. Rare Yellow Print. Bottom D-Getter.
Here we have for sale is an outstanding set of rare yellow label NOS tested Mullard 12AX7 ECC83 Tubes. PERFECT Tubes. Platinum MATCHED pair with nicely BALANCED Triodes. Rare set of tubes with the scarce yellow labels only made for a 3 yr period 1962-1965.
Great NOS Mullard KT66 tube in original box. Tested super strong on my calibrated Hickok 752a tester @600 (average minimum good reading for this tube on this tester=300)
Both Tested strong on an Amplitrex AT1000 with the following results (as photographed): Regular pin- 71% ip and 87% gm Gold pin (realistic label) 87% ip 89% gm
KM1 XXXX (EL84 production of the GB.). Model: 1960s Mullard EL84 10M Master Series (Made in Great Britain ). NEW reproduction Mullard tube box. Professional Tube Testing. Product Summary. Curve trace is also included in the original RoeTest report.
Amplitrex AT1000 tested strong 82% emissions and 76% gm