Amperex PQ Platinum Matched PairWhite Label 6922usedAmperex PQ Platinum Matched Pair White Label 6922 NOS NIB 1963 Gold Pin Low NoiseYour rare chance to get a beautiful pair of New Old Stock (NOS) New in Box Made In USA Amperex 6922/E88CC White Label PQ vacuum tubes with gold pins. Come from NOS sleeve of 5 tubes, and neve...285.00

Amperex PQ Platinum Matched Pair White Label 6922 NOS NIB 1963 Gold Pin Low Noise

Listing ID: lis601e7 Classified 
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sojs 

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Condition
10/10
Payment methodsContact seller

Contact seller after sale to pay viaCertified check, Personal check or COD

Ships fromBrea, CA, 92821
Ships toUnited States
Package dimensions8.0" × 7.0" × 6.0" (1.0 lbs.)
Shipping carrierUSPS
Shipping cost$6.00
Original accessoriesBox
AverageResearch Pricing

Your rare chance to get a beautiful pair of New Old Stock (NOS) New in Box Made In USA Amperex 6922/E88CC White Label PQ vacuum tubes with gold pins.   
Come from NOS sleeve of 5 tubes, and never been used except for testing purposes.

They test very strong as they should.  Platinum matched: all 4 sections are extremely tightly matched within less than 1%.  This pair have very low noise and no microphonics and therefore suitable for any application including Phono Stage.

Fully guaranteed.

This pair has the same date code - 7L8*3B, indicating both are made in February 1963.  Even the sand blasted date codes at upper portion of the tubes are the same: 316 (16th week of 1963).  All lettering on both tubes are identical.

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.

Payment by money order or check only (no Paypal please).

Priority Mail shipping within US with tracking is $6.  

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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: 14300   
Tube #1 Triode Section 2: 14300   
Tube #2 Triode Section 1: 14400   
Tube #2 Triode Section 2: 14300

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

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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.

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