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. These premium Made in Great Britain (BVA) valves feature the highly sought-after Short Grey Plate construction, Double Mica spacers for reduced microphonics, and a Top Ring Getter. Both tubes are New Old Stock (NOS) in clean white boxes and have been fully tested on the Amplitrex AT1000 Digital Tube Tester.
- Type: ECC81 / 12AT7 Brand: Mullard
- Condition: NOS in White Boxes Construction: Double Mica / Top Ring Getter
- Origin: Made in Great Britain Testing: Amplitrex AT1000
High Performance Screening: Tested against reference parameters (Ip=10.0, Gm=5500) for the ECC81 series.
Amplitrex Characterized: Both tubes exhibit exceptionally high emission, testing well above 100% of the factory nominal rating.
Amplitrex Characterized: Both tubes exhibit exceptionally high emission, testing well above 100% of the factory nominal rating.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Triode | Parameter Ip (mA) | Result Ip (mA) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 2273003 | T1 | 10.0 | 11.4 | 114% | 5500 | 5800 | 105% |
| T2 | 10.0 | 11.2 | 112% | 5500 | 5580 | 101% | |
| 2273002 | T1 | 10.0 | 12.0 | 120% | 5500 | 5700 | 103% |
| T2 | 10.0 | 11.0 | 110% | 5500 | 5600 | 101% |
✉️ For technical inquiries, please Email us at [email protected]
Whatsapp: +1 (630) 597-3966
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