Five, new in box, Tung Sol USA JTL 12AX7, military issue tubes. Long, 17 mm plates, angled D-getter. Straight pins, original logos, excellent silvering. Tubes are matched inside and out for structure and test at 2125-2125, 2125-2062, 2125-2062, 2000-2000, 2000-2000, where pass/fail is 950 micromho.
Item Tag: United States
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TUNGSOL 12AX7/ECC83 Long Black Plate Made in USA Amplitrex Tested Qty 1Pc
Prized for its rich harmonic detail and legendary “sweet” tone, this tube is supplied in a clean white protective box and has been precision characterized on the Amplitrex AT1000. Origin: Made in USATesting: Amplitrex AT1000.
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12AX7 TUNG SOL JTL 17MM BLACK PLATE VINTAGE AUDIO TUBE (1951) *eTRACER* #12C33
Triode #1 – Plate Current = 1.61mA Rp = 55279 Gm = 1776 Mu = 98.2 Corners = PASS. Triode #2 – Plate Current = 1.51mA Rp = 56414 Gm = 1717 Mu = 98.2 Corners = PASS. 17mm long black plates, date code of “32231-23” indicating production in June, 1951.
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Strong TUNG-SOL Long Gray Plate Angled D Getter JTL-12AX7 / ECC83 Tube
Strong TUNG-SOL Long Gray Plate Angled D Getter (Foil w 2 dimples) JTL-12AX7 / ECC83 Tube. Great Sounding Tube – MILITARY ISSUE. Tube passed ALL tests. MINIMUM reading is 70%, NEW (NOS) reading is 100%+ and MAX reading is 130%.
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Matched Pair Tung-Sol 12AX7/ECC83 Long Plate Square Getter USA Strong
Square Getter. Matched Pair. Tightly matched and strong pair! Long Plate. Made in USA. where minimum good value is 875. Tested in my preamplifier to make sure working as intended with no issues at all.
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Matched Pair Tung-Sol 12AX7/ECC83 Long Plate Square Getter Very Strong USA
Square Getter. Matched Pair. Well matched pair! Long Plate. Made in USA. where minimum good value is 875.
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RCA 12AX7 Black Plate “Tung-Sol” NOS/NIB MaxiPreamp2/TV7 Tested (1)Tube Lot
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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Strong Magnavox by TUNG-SOL Long Gray Plate Angled D Getter 12AX7 / ECC83 Tube
Strong Magnavox by TUNG-SOL Long Gray Plate Angled D (Foil w 2 dimples) Getter 12AX7 / ECC83 Tube. Great Sounding Tube. Tube passed ALL tests. MINIMUM reading is 70%, NEW (NOS) reading is 100%+ and MAX reading is 130%.
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Strong TUNG-SOL Long Gray Plate Angled D Getter JTL- 12AX7 / ECC83 Tube
Strong TUNG-SOL Long Gray Plate Angled D Getter (Foil w 2 dimples) JTL-12AX7 / ECC83 Tube. Great Sounding Tube – MILITARY ISSUE. Tube passed ALL tests. MINIMUM reading is 70%, NEW (NOS) reading is 100%+ and MAX reading is 130%.
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Tung-Sol Long Gray Plate JTL 12AX7 Vacuum Tubes (2) Tested Matched 100/100% Both
Two Tung-Sol long gray plate square getter JTL 12AX7 vacuum tubes tested perfectly matched at 100/100% Gm each. 100% represents what you would expect from a NOS tube on our Amplitrex and 65% is considered too low to use.