Amperex White Label 6922 E88CC Pair USN-CEP PQ NOS NIB, Matched Pair, Gold Pin

Your rare chance to get a matched pair of New Old Stock (NOS) New in Box Made In USA Amperex 6922/E88CC USN-CEP vacuum tubes with gold pins.

These are made for US Navy, and exactly the same tubes as Amperex White Label PQ 6922 tubes (only with tighter and more stringent military spec).

Tubes come from a sleeve of 5 tubes.
You are buying one pair from the sleeve of 5 - you choose a pair.

All 5 tubes are available for purchase.
All have the same date codes: 7L9*4J (made in October 1964).
All have the same painted date codes: 64-52 (packaged in1964, 52nd week).

6922 tubes will have a longer lifespan than 6DJ8 tube.
In some cases 6922 tubes will last 5,000 to 10,000 hours vs 3,000 to 4,000 hours for 6DJ8 tubes.

NOS in Original box, never used, very quiet as NOS tubes should be!
Tightly matched!
Should last for many years!

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Shorts and Gas Test: Passed
Listening Test: Very good noise characteristics with no microphonics.
Gm Test:
Tube #1 Triode Section 1: 14700
Tube #1 Triode Section 2: 15000
Tube #2 Triode Section 1: 14800
Tube #2 Triode Section 2: 14900

Tube #3 Triode Section 1: 14700
Tube #3 Triode Section 2: 14200
Tube #4 Triode Section 1: 14600
Tube #4 Triode Section 2: 14200

Tube #4 Triode Section 1: 14700
Tube #4 Triode Section 2: 14900

Where minimum good is 7000 and Spec for new tube is 12500

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Excellent performance guaranteed, so buy with confidence (full refund if not satisfied).

First Class Mail shipping within US with tracking is $4.
USPS International First Class Mail is $12 ($10 to Canada).

All tubes are tested by Hickok 539C vacuum tube tester. This tester was precision calibrated by Roger Kennedy to improve measurement accuracy. 83 and 5Y3 tubes were replaced by Solid State rectifiers to minimize calibration drift in the tester.

All tubes are installed into an actual audio circuit to screen them for internal tube noise/micorphonics. This is especially important with the 6DJ8/6922/7308 tubes.

Music Reference RM-4 pre-preamp (moving coil head amp with 30 db gain) is used for "in circuit"/real world noise/microphonic testing. This unit uses two 6DJ8/6922/7308 vacuum tubes. Each channel uses both triode sections making it ideal tool for noise/microphonic testing of both triode sections.