Sylvania 12AX7/ECC83 – Vintage U.S. Production Grey Plate Top Ring Getter
NOS Single Tube
New In Original GVT Box
Grey Plate
Top Ring Getter
New In Original GVT Box
Grey Plate
Top Ring Getter
Offering a premium New Old Stock (NOS) 1 Pc Sylvania 12AX7 dual triode, Serial No. 1248003. This classic American-made tube features Grey Plates and a Top Ring Getter. Sylvania production from this era is highly regarded for its rugged construction and clean, airy top-end response, making it a favorite for both vintage guitar amplifiers and hi-fi preamps. This unit is supplied in its Original GVT Box and has been precision characterized on the Amplitrex AT1000.
- Type: 12AX7 / ECC83 Brand: Sylvania
- Condition: New in Original GVT Box Construction: Grey Plate / Top Ring Getter
- Origin: Made in USA Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters for . This specimen is Perfectly Matched between triodes, with identical gain and transconductance results.
⚠️ 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 |
|---|---|---|---|---|---|---|---|
| 1248003 | T1 | 1.2 | 1.1 | 92% | 1600 | 1700 | 106% |
| T2 | 1.2 | 1.1 | 92% | 1600 | 1700 | 106% |
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