BRIMAR CV4003 / 12AU7 — Matched Pair
GRADE: PLATINUM GRADE | LABORATORY VERIFIED | NOS/VINTAGE STOCK
Top Ring Getter
Amplitrex AT1000 Digital Testing
This listing features a high-reliability matched pair of vintage Brimar CV4003 dual triodes. These military-grade valves utilize a Grey Plate and Top Ring Getter construction, providing the superior mechanical stability and tonal balance required for critical audio applications. Made in England, Which comes in original box.
Both tubes have been laboratory-verified on the Amplitrex AT1000 digital tester. Using our Percentage Method, the test results below show the performance of each triode section against the 100% factory design-center specifications (Ip = 10.5mA / Gm = 2200 µMhos).
| Serial No. | Test Triode | Parameter Ip | Result Ip | % Ip | Parameter Gm | Result Gm | % Gm |
|---|---|---|---|---|---|---|---|
| 807169 | T1 | 10.5 | 12.0 | 114% | 2200 | 2300 | 105% |
| T2 | 10.5 | 10.0 | 95% | 2200 | 2100 | 95% | |
| 807107 | T1 | 10.5 | 11.4 | 109% | 2200 | 2300 | 105% |
| T2 | 10.5 | 10.2 | 97% | 2200 | 2100 | 95% |
NOTE : WE HAVE MORE THAN 900 PCS
Note: Custom Duties and Taxes are the Responsibility of the Buyer in their Country
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