POPE ECC81 / 12AT7 – MATCHED DUAL TRIODE PAIR (2 PCS)
Made in Holland
Grey Plate Structure
Top Ring Getter
High-Mu Dual Triode ECC81 / 12AT7
New in White Box
Amplitrex AT1000 Tested
Up for sale is a matched pair (2 pcs) of vintage NOS Pope ECC81 / 12AT7 high-Mu dual triode vacuum tubes, supplied in individual white boxes. Manufactured in Holland, these Dutch audio valves feature grey plate anodes, top ring getters, and clean glass envelopes. Renowned for smooth musicality, low noise floor, tight section-to-section matching, and classic European tone. An excellent matched pair replacement or upgrade for high-end audio preamplifiers, phase inverters, guitar amplifiers, and vintage studio recording equipment.
Both dual triode tubes have been fully tested on a precision Amplitrex AT1000 digital tube tester. Measured Plate Current (Ip in mA) and Mutual Conductance (uMhos) alongside percentage performance ratings relative to nominal reference values (Reference: 10.0 mA / 5,500 uMhos) are detailed for both internal triode sections in the table below.
| Serial No. | Tube Section | Plate Current (Ip) | Mutual Conductance (uMhos) | ||||
|---|---|---|---|---|---|---|---|
| Ref Spec | Result | % Ip | Ref Spec | Result | % uMhos | ||
| SR.NO.5470001 | Triode 1 (T1) | 10.0 mA | 7.2 mA | 72% | 5500 | 4950 | 90% |
| Triode 2 (T2) | 10.0 mA | 7.4 mA | 74% | 5500 | 5140 | 93% | |
| SR.NO.5470003 | Triode 1 (T1) | 10.0 mA | 7.8 mA | 78% | 5500 | 5180 | 94% |
| Triode 2 (T2) | 10.0 mA | 6.8 mA | 68% | 5500 | 4900 | 89% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
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