Amperex White Label 6922 E88CCPQ usedAmperex White Label 6922 E88CC PQ  Matched Pair Gold Pin Phono Grade Labeled as Hewlett-PackardThis listing is for One very well matched Pair of Phono Grade Made In USA Amperex 6922/E88CC vacuum tubes with gold pins. These are made for Hewlett Packard, and exactly the same tubes as Ampere...100.00

Amperex White Label 6922 E88CC PQ Matched Pair Gold Pin Phono Grade Labeled as Hewlett-Packard

Listing ID: lis66j88 Classified 
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sojs 

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Condition
9/10
Payment methodsContact seller

Contact seller after sale to pay viaCertified check or Personal check

Ships fromBrea, CA, 92821
Ships toUnited States
Package dimensions8.0" × 7.0" × 4.0" (1.0 lbs.)
Shipping carrierUSPS
Shipping cost$6.95
AverageResearch Pricing

This listing is for One very well matched Pair of Phono Grade Made In USA Amperex 6922/E88CC vacuum tubes with gold pins. 
  
These are made for Hewlett Packard, and exactly the same tubes as Amperex White Label PQ 6922 tubes (selected as instrument grade). 

Manufacture Date codes: 7L6*2F (June 1962) and 7L6*1F (June 1961).  

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.
 
Phono Grade Extremely Quiet!   Test strong and will last for years!  

Payment by Check or Money Order only (no Paypal). 

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

USPS Priority Mail shipping with tracking within US is $6.95.

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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: 12700
Tube #1 Triode Section 2: 12600
Tube #2 Triode Section 1: 11700
Tube #2 Triode Section 2: 12100

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

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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/microphonics. This is especially important with the 6DJ8/6922/7308 tubes.

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