MULLARD ECC81 / 12AT7 — Vintage Made in Great Britain Pair
Grade: NOS Series
Laboratory Verified
Made in Great Britain
Laboratory Verified
Made in Great Britain
Top Square Getter
Gray Plates
Dual Mica Support
Amplitrex AT1000 Precision Tested
Gray Plates
Dual Mica Support
Amplitrex AT1000 Precision Tested
Presenting a premium matched pair of Mullard ECC81 / 12AT7 vacuum tubes, professionally manufactured in Great Britain. These highly desirable specimens feature the iconic Top Square Getter and Gray Plate construction, known for delivering the classic Mullard “liquid” midrange and exceptional harmonic detail.
Both tubes have been characterized on the Amplitrex AT1000 digital laboratory tester. This pair offers balanced triode performance, making it an ideal choice for high-end audio preamplifiers and phase inverter stages.
| Serial No. | Triode Section | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| #3417001 | Section 1 (T1) | 10.0 | 10.0 | 100% | 5500 | 5200 | 94.5% |
| Section 2 (T2) | 10.0 | 10.0 | 100% | 5500 | 5300 | 96.3% | |
| #3417002 | Section 1 (T1) | 10.0 | 9.8 | 98% | 5500 | 5150 | 93.6% |
| Section 2 (T2) | 10.0 | 9.8 | 98% | 5500 | 5100 | 92.7% |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
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Precision Verified — NOS Audio Tubes
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