NOS Unused Pair Mullard ECC81/12AT7/CV455 square getter. Both are tested NOS
NOS (New Old Stock)
New In White Box
Short Grey Plate
Square Getter
New In White Box
Short Grey Plate
Square Getter
Offering a premium New Old Stock (NOS) Mullard CV455 (Military Grade ECC81/12AT7) dual triode, Serial No. 2271003. This highly regarded British valve features the desirable Short Grey Plate construction and a Square Getter. Characterized by its Chrome Dome appearance, this tube is supplied in a clean white protective box and has been laboratory tested on the Amplitrex AT1000.
- Type: CV455 (ECC81 / 12AT7 Military Spec) Brand: Mullard
- Condition: NOS in White Box Construction: Short Grey Plate / Square Getter
- Origin: Made in Great Britain Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters (Ip=10.0, Gm=5500). The CV455 is the ruggedized high-reliability version of the standard ECC81, favored for its warm, detailed sonic profile.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Test Triode | Parameter Ip (mA) | Result Ip (mAdc) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 2271003 | T1 | 10.0 | 5.8 | 58% | 5500 | 3170 | 58% |
| T2 | 10.0 | 7.0 | 70% | 5500 | 4170 | 76% |
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