PHILIPS MINIWATT ECC81 — Vintage Made in Holland Pair
Grade: NOS Series
Laboratory Verified
Made in Holland
Laboratory Verified
Made in Holland
Top Ring Getter
Gray Plates
Original Box Included
Amplitrex AT1000 Precision Tested
Gray Plates
Original Box Included
Amplitrex AT1000 Precision Tested
Available for purchase is a tightly matched pair of premium Philips Miniwatt ECC81 vacuum tubes, meticulously crafted in Holland. These specimens feature the desirable Top Ring Getter and internal construction hallmarks that signify peak European tube manufacturing.
Verified on the Amplitrex AT1000 laboratory tester, this pair shows excellent balance across all four triode sections. Renowned for their musicality and low noise floor, these Philips Holland ECC81s are a first-class upgrade for high-fidelity preamplifiers and musical instrument amplifiers.
| Serial No. | Triode Section | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| #4899006 | Section 1 (T1) | 10.0 | 8.8 | 88% | 5500 | 5380 | 97.8% |
| Section 2 (T2) | 10.0 | 11.4 | 114% | 5500 | 5220 | 94.9% | |
| #4899005 | Section 1 (T1) | 10.0 | 9.0 | 90% | 5500 | 5300 | 96.3% |
| Section 2 (T2) | 10.0 | 8.6 | 86% | 5500 | 5280 | 96% |
Technical Note: Percentage calculations are based on standard Amplitrex factory parameters for the ECC81 / 12AT7 family (Standard Ip = 10.0mA, Standard Gm = 5,500 uMhos).
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Precision Verified — NOS Audio Tubes
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