RCA 5814A Premium — Matched Pair 2 Pcs
Made in U.S.A
Black Plate
Date Code: 52-48
Amplitrex AT1000 Tested
Available for Sale is a beautiful, matched pair (2 pieces) of premium vintage RCA 5814A twin triodes (high-grade, ruggedized 12AU7/ECC82 types). These historic valves are genuine American production featuring the highly coveted Black Plate construction and a rigid Top Square Getter setup.
both tubes come New in Original Box and have been precision tested on our industrial-grade Amplitrex AT1000 tester to ensure exact performance figures against original factory specifications.
| Serial No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| 2127041 | T1 | 10.5 | 9.4 | 89.5% | 2200 | 2100 | 95.5% |
| T2 | 10.5 | 11.2 | 106.7% | 2200 | 2300 | 104.5% | |
| 2127039 | T1 | 10.5 | 10.6 | 101.0% | 2200 | 2100 | 95.5% |
| T2 | 10.5 | 14.2 | 135.2% | 2200 | 2300 | 104.5% |
About NOS Audio Tubes
We are professional specialists in high-quality vacuum tubes with industry roots dating back to the 1970s. With an extensive inventory of roughly 300,000 classic valves, we utilize a laboratory-grade Amplitrex AT1000 to offer deep, highly precise performance percentages for discerning audio enthusiasts worldwide.
Note: Custom duties and Taxes are the Responsibility of the Buyer in their Country.
Support: [email protected]
NOS Audio Tubes — Mumbai, India
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