Mullard ECC81 (12AT7) NOS Matched Pair
NOS Matched Pair
New In White Box
Double Mica
Short Grey Plate
New In White Box
Double Mica
Short Grey Plate
Offering a laboratory-matched pair of 2 pcs Mullard ECC81 (12AT7) dual triodes, Serial Nos. 1159013 and 1159004. These premium Made in Great Britain (BVA) valves feature high-stability Short Grey Plates, Double Mica construction, and a “D” Getter. Both tubes are New Old Stock (NOS) in clean white boxes and have been fully characterized on the Amplitrex AT1000 Digital Tube Tester.
- Type: ECC81 / 12AT7 Brand: Mullard
- Condition: NOS in White Boxes Construction: Double Mica / “D” Getter
- Origin: Made in Great Britain Testing: Amplitrex AT1000
High-Emission Screening: These tubes demonstrate strong mutual conductance (uMhos) across all triode sections.
Amplitrex Characterized: Both units have been screened for balanced performance against reference parameters (Ip=10.0, Gm=5500), making them ideal for high-fidelity audio applications.
Amplitrex Characterized: Both units have been screened for balanced performance against reference parameters (Ip=10.0, Gm=5500), making them ideal for high-fidelity audio applications.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Test Triode | Parameter Ip (mA) | Result Ip (mA) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 1159013 | T1 | 10.0 | 7.4 | 74% | 5500 | 4700 | 85% |
| T2 | 10.0 | 8.2 | 82% | 5500 | 5060 | 92% | |
| 1159004 | T1 | 10.0 | 6.8 | 68% | 5500 | 4800 | 87% |
| T2 | 10.0 | 6.8 | 68% | 5500 | 4800 | 87% |
✉️ For technical inquiries, please Email us at [email protected]
Whatsapp: +1 (630) 597-3966
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