International 12AU7A / ECC82 NOS Single Tube – Long Plate Made in USA
NOS Single
New In Original Box
Black Plate
Top Ring Getter
New In Original Box
Black Plate
Top Ring Getter
Offering a high-quality New Old Stock (NOS) 1 Pc International Servicemaster 12AU7A (ECC82) dual triode, Serial No. 2480001. This American-manufactured valve features desirable Long Plates, Double Mica construction, and a Top Ring Getter. The unit is preserved in its Original Blue ServiceMaster Box and has been laboratory tested on the Amplitrex AT1000 Digital Tube Tester.
- Type: 12AU7A / ECC82 Brand: International
- Condition: New in Original Box Construction: Long Plate / Double Mica
- Origin: Made in USA Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters.
Performance: This tube exhibits exceptional strength, testing at 118% and 97% of the rated plate current. Transconductance is balanced and strong at 2400 and 2100 uMhos.
Performance: This tube exhibits exceptional strength, testing at 118% and 97% of the rated plate current. Transconductance is balanced and strong at 2400 and 2100 uMhos.
⚠️ 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 |
|---|---|---|---|---|---|---|---|
| 2480001 | T1 | 10.5 | 12.4 | 118% | 2200 | 2400 | 109% |
| T2 | 10.5 | 10.2 | 97% | 2200 | 2100 | 95% |
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