MULLARD ECC81 / 12AT7 – 2 PCS
GRADE: GOLD SERIES | LABORATORY VERIFIED NOS
Top Ring GetterNew in White Boxes
Made in Great Britain
Amplitrex AT1000 Tested
Offered here is a stellar vintage matched pair lot of 2 premium MULLARD ECC81 / 12AT7 dual-triode audio valves, pristine and clean in crisp white boxes. Made in Great Britain, these highly sought-after vintage tubes feature high-grade Grey Plates and a precision Top Ring Getter configuration, proudly displaying the iconic original white Mullard shield and BVA decals.
As captured in each individual tube has been rigorously checked and verified on a laboratory-grade Amplitrex AT1000 digital tube analyzer. Following the exact formatting layout verified in the comprehensive data table below provides the full side-by-side factory parameters alongside the laboratory-measured test results for both triode sections.
| Serial No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| 2783006 | T1 | 10.0 | 9.9 | 99% | 5500 | 4850 | 88% |
| T2 | 10.0 | 8.6 | 86% | 5500 | 4600 | 84% | |
| 2783026 | T1 | 10.0 | 9.8 | 98% | 5500 | 4900 | 89% |
| T2 | 10.0 | 8.6 | 86% | 5500 | 4690 | 85% |
Note: Custom duties and taxes are the responsibility of the buyer in their country.
Note : We have more than 600 Pcs
Support: [email protected] Precision Verified — NOS Audio Tubes
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