Offering a superb matched pair (2 pieces) of authentic vintage Brimar ECC81 vacuum tubes, meticulously crafted in England. These premium valves feature the highly desirable Black Plate construction and Top Ring Getter, renowned among audiophiles for their exceptional sonic depth, low noise, and rich harmonic texture.
Both tubes have been professionally characterized on an Amplitrex AT1000 analyzer. With strong emission and transconductance across all sections, this pair is an ideal choice for high-fidelity preamplification or critical driver stages where British vintage tone is required.
| Serial No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| 1260002 | Section 1 (T1) | 10.0 | 9.8 | 98% | 5500 | 6040 | 109.8% |
| Section 2 (T2) | 10.0 | 12.2 | 122% | 5500 | 7070 | 128.5% | |
| 1260006 | Section 1 (T1) | 10.0 | 10.2 | 102% | 5500 | 6140 | 111.6% |
| Section 2 (T2) | 10.0 | 10.8 | 108% | 5500 | 6290 | 114.3% |
Technical Note: Percentage calculations are based on standard Amplitrex parameters for the ECC81 family (Ip = 10.0mA, Gm = 5,500 uMhos).