Pair Amperex 6922 PQ Orange Labelmade in USA, strong, matchedPair Amperex 6922 PQ Orange Label made in USA, strong, matched gold pinUp for your consideration are 2 Made In USA Amperex 6922 Orange Label PQ vacuum tubes with gold pins. Test strong and quite! One is labeled as PQ and made in 1971, the other labeled as RCA and ...110.00

Pair Amperex 6922 PQ Orange Label made in USA, strong, matched gold pin [Expired]


no longer for sale

Up for your consideration are 2 Made In USA Amperex 6922 Orange Label PQ vacuum tubes with gold pins. Test strong and quite! One is labeled as PQ and made in 1971, the other labeled as RCA and made in 1972, but they have identical construction. Date codes are 7L9*1C and 7L6*2D. Paypal add 3.5%. 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. Tested for shorts, gas and noise, GM reading is very good and exceed or close to spec for new. Matching: 11% for all 4 sections Listening Test: Very good noise characteristics Gm Test: Tube #1 Triode Section 1: 13500 Triode Section 2: 13700 Tube #2 Triode Section 1: 12500 Triode Section 2: 12300 Where minimum good is 7000 Spec for new is 12500 I guarantee excellent performance, so bid with confidence. If you are not satisfied with my tubes for any reason, I will issue full refund for your purchase price. Buyer pays for return shipping. Priority Mail shipping within US with delivery confirmation is $5.90. Priority Mail International Small Flat Rate Box shipping is $13.45. First class mail will cost less. I can ship by First class mail if requested. 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. I also perform listening tests on these tubes using Music Reference RM-4 pre-preamp (moving coil head amp), which has 30 db gain. This unit uses two 6DJ8 tubes (one for each channel). Each channel uses both sections of the 6DJ8 tube.
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sojs 

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