PHILIPS-MINIWATT ECC81 — Matched Pair Made in Holland
Grade: Gold Series
Laboratory Verified
Made in Holland
Laboratory Verified
Made in Holland
Top Ring Getter
Dual Triode Construction
Miniwatt Labeling
Amplitrex AT1000 Verified
Dual Triode Construction
Miniwatt Labeling
Amplitrex AT1000 Verified
Available for purchase is a matched pair (2 pieces) of premium Philips-Miniwatt ECC81 dual triode tubes, masterfully crafted in Holland. These tubes feature the iconic Top Ring Getter and are highly sought after for their lush, detailed European sonic profile.
Each tube has been professionally analyzed on the Amplitrex AT1000. These specimens exhibit high emission and strong transconductance across all triode sections, making them a perfect upgrade for high-end preamplifiers and phase-inverter stages.
| Serial No. | Triode Section | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| #2445003 | (T1) | 10.0 | 11.6 | 116% | 5500 | 6100 | 111% |
| (T2) | 10.0 | 12.4 | 124% | 5500 | 6500 | 118% | |
| #2445004 | (T1) | 10.0 | 11.2 | 112% | 5500 | 6020 | 109% |
| (T2) | 10.0 | 12.2 | 122% | 5500 | 6300 | 115% |
Technical Note: Percentage calculations are based on standard NOS factory specifications for the ECC81/12AT7 (10.0mA for Ip and 5,500 uMhos for Gm). This pair represents high-performance vintage Dutch stock.
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Precision Verified — NOS Audio Tubes
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