Brimar 12AT7WA/CV4024 NOS Matched Pair – Military Grade
NOS Matched Pair
CV4024 / WA
Short Grey Plate
Top Ring Getter
CV4024 / WA
Short Grey Plate
Top Ring Getter
Offering a premium New Old Stock (NOS) matched pair of 2 Pcs Brimar 12AT7WA/CV4024, Serial Nos. 432046 and 432057. These are the highly desirable Short Grey Plate versions, manufactured in England to strict military specifications (CV4024) for superior longevity and low noise. Featuring Top Ring Getters and a ruggedized internal structure, these tubes are ideal for high-end audio and critical guitar amp applications. Both units are supplied in New White Boxes and have been precision characterized on the Amplitrex AT1000.
- Type: 12AT7WA / CV4024 / ECC81 Brand: Brimar
- Condition: NOS in White Box Construction: Short Grey Plate / Top Ring Getter
- Origin: Made in England Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters for 12AT7 (Ip=10.0, Gm=5500). This pair is exceptionally well-matched, with all triodes across both tubes measuring within a tight range.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Triode | Parameter Ip (mA) | Result Ip (mAdc) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 432046 | T1 | 10.0 | 6.2 | 62% | 5500 | 3340 | 61% |
| T2 | 10.0 | 5.6 | 56% | 5500 | 3440 | 63% | |
| 432057 | T1 | 10.0 | 6.8 | 68% | 5500 | 3400 | 62% |
| T2 | 10.0 | 6.3 | 63% | 5500 | 3360 | 61% |
✉️ For technical inquiries, please Email us at [email protected]
Whatsapp: +1 (630) 597-3966
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