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TWO Amperex ECC88 / 6DJ8 tubes
+100% Strong gm on all sections
Tubes test: 14230, 15520 and 13600, 14840
where pass/fail is 8125 micromhos
Original boxes included
Saucer getters / disc / disc / dimple / cup
Globe logos intact excellent
Made in Germany
Matched 1-45 date codes = 1971 week 45
Tested on Amplitrex AT-1000 tube tester (fixed bias mode)
FULL TEST RESULTS:
Tube 1:
14230 gm / 15520 gm (uMhos)
16.6 mA / 19.8 mA Plate Current Emissions (iP)
% Test results in percent %
113.8% / 124.1% gm (uMhos)
110.6% / 132% mA plate current
NO SHORTS / ZERO GAS
------
Tube 2:
13600 gm / 14840 gm (uMhos)
14.8 mA / 18.4 mA Plate Current Emissions (iP)
% Test results in percent %
108.8% / 118.7% gm (uMhos)
98.6% / 122.6% mA plate current
NO SHORTS / ZERO GAS
For reference:
SPEC (100%) value for ECC88 tubes =
12500 micromhos (uMhos) and 15 iP P.current
Pass/Fail value for ECC88 tubes =
65% of SPEC (8125 micromhos and 9.75 iP)
USA Shipping free priority
international shipping = UPS or FedEx 7-10 day signature delivery depending on your country
*I take photos with camera flash on and camera flash off to show all detail*
