Mullard ECC81 (12AT7) NOS
NOS Single Tube
New In White Box
Double Mica
Short Grey Plate
New In White Box
Double Mica
Short Grey Plate
Offering a single Mullard ECC81 (12AT7) dual triode, Serial No. 1158002. This premium Made in Great Britain (BVA) valve features the high-performance Short Grey Plate construction, Double Mica spacers. This tube is New Old Stock (NOS) in a clean white box and has been fully tested on the Amplitrex AT1000 Digital Tube Tester.
- Type: ECC81 / 12AT7 Brand: Mullard
- Condition: NOS in White Box Construction: Double Mica
- Origin: Made in Great Britain Testing: Amplitrex AT1000
Laboratory Testing: Characterized against reference parameters (Ip=10.0, Gm=5500) for the ECC81 series.
Quality Assurance: This valve exhibits stable emission and transconductance, making it perfect for high-end audio preamplification.
Quality Assurance: This valve exhibits stable emission and transconductance, making it perfect for high-end audio preamplification.
⚠️ 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 |
|---|---|---|---|---|---|---|---|
| 1158002 | T1 | 10.0 | 7.0 | 70% | 5500 | 4560 | 83% |
| T2 | 10.0 | 6.0 | 60% | 5500 | 4170 | 76% |
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