ZAERIX CV4024 / 12AT7WA – PAIR (2 PCS)
GRADE: GOLD SERIES | VINTAGE ENGLAND MANUFACTURE
Zaerix Brand Label
CV4024 / 12AT7WA High Reliability Grade
Black Plate
Top Ring Getter
New in Original Box
Amplitrex AT1000 Tested
Up for sale is a premium pair (2 Pcs) of vintage NOS Zaerix CV4024 / 12AT7WA high-reliability dual triode audio valves, complete in their original factory boxes. Made in England, these tubes feature desirable black plate construction and a robust top ring getter layout. The military-grade CV4024 / 12AT7WA designation ensures exceptional mechanical stability, low microphonics, and long life in audio preamplifiers, phase inverters, and driver stages.
Both tubes have been thoroughly tested on an advanced Amplitrex AT1000 tester at nominal operating conditions. Plate Current (Ip in mA) and Transconductance (uMhos) readings along with percentage performance ratings relative to standard factory specifications are detailed in the table below.
| Serial No. | Tube Section | Plate Current (Ip) | Transconductance (Gm) | ||||
|---|---|---|---|---|---|---|---|
| Ref Spec | Result | % Ip | Ref Spec | Result | % Gm | ||
| SR.NO. 2089001 | Triode 1 | 10.0 mA | 8.6 mA | 86% | 5500 uMhos | 4500 uMhos | 82% |
| Triode 2 | 10.0 mA | 6.8 mA | 68% | 5500 uMhos | 4000 uMhos | 73% | |
| SR.NO. 2089003 | Triode 1 | 10.0 mA | 6.2 mA | 62% | 5500 uMhos | 3570 uMhos | 65% |
| Triode 2 | 10.0 mA | 6.6 mA | 66% | 5500 uMhos | 3900 uMhos | 71% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
Reviews
There are no reviews yet