These RCA 12AX7A are one and only tube to have in the V1 slot on any guitar amp. It has that 1960s sound, excellent breakup, and a smoothness that must be heard to be believed! These are the original 1960's RCA made 12AX7A tubes from the Harrison, NJ.
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I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
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Circa: 1958 mC1 series 17mm long plate tube with the O-getter. Outstanding example of one of the early German made ECC83 tubes and very highly sought after. Top quality tube with the wonderful clear crisp tone that the early long plate German tubes are known for.
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I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly. See Photos for test results.
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Scores of 800 micromhos or higher are good for 7025-12AX7 on this professional Western Electric tube tester. Scores around 1250 considered typical NOS, anything above that is gravy! Bias = -1.5 filtered vdc.
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REAL MILITARY ISSUE 7025 = 12AX7A = E83CC. TESTED AT REAL-WORLD 500V POWER LEVELS ON AMPLITREX AT-1000. All our tubes are Tested on Amplitrex AT1000 Digital Tube Test System. PASSED THE AMPLITREX DIGITAL TESTS.
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New old stock 1 VINTAGE TELEFUNKEN "FISHER" 12AX7A / ECC83 Vacuum Tube Amplitrex Tested strong. Condition is "New". Shipped with USPS First Class.
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Manufacturer: Mullard Great Britain for Amperex. But this the way of the world now. We are always looking to buy more tubes. Large collections, small collections, it doesn't matter. Looking forward to hearing from you, Dan.
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