(Most of my tubes were U.S. made. One lot of four heavy duty military JAN-12AT7WA or -WB) tubes, by G.E. For example. The -W is industrial designation, or heavy duty equivalent.
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• 12BA6 (3 tubes) - Remote-cutoff pentode. • 12AT7 (3 tubes) - High-gain dual triode. • 407A (2 tubes) - Premium pentode. • IU5 (1 tube) - Battery-type pentode. • 12AU7/12AU7A (8 tubes) - Popular dual triode preamp tube.
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Tests stronger than new specs.
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The pictures shows a GE 6201/12at7wa Short Grey Plate Solid O Getter strong 100/100 each side. This is a military grade tube with a rarer solid O getter. Tube Tester Scale reads. So, for example.
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This is a lot of 4 vintage GE 12AT7 / ECC81 tubes that tested good on a Hickock 532 Tester. The tubes tested as follows of an expected 400gm on each triode: Tube 1 4500gm on triode 1 4200gm on triode 2 Tube 2 4500gm on triode 1 4600gm on triode 2 Tube 3 4050gm on triode 1 4500gm on triode 2 Tube 4 4000gm on triode 1 4000gm on triode 2 They come in GE boxes, 2 of which are not original, while the other 2 may be. The boxes are in fair condition. See all photos for condition.
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Tested Good.
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Strong GE Long Gray Plate FAT D Getter 12AX7 / ECC83 Tube. Tube passed ALL tests. This is very important! We strive to make this happen!
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2x GE General Electris 12AT7 Vacuum Electronic Tubes ~ TESTED GOOD ~ I test all tubes with a Sencore MU150 Continental II tester.
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