RCA 12AX7 / ECC83 — Grey Plate
GRADE: GOLD SERIES | LABORATORY VERIFIED | NOS/VINTAGE STOCK
Grey Plate Construction
Made in USA
Amplitrex AT1000 Digital Testing
Offered here is a premium vintage RCA 12AX7 / ECC83 vacuum tube, featuring the classic Grey Plate internal structure and Top Ring Getter. RCA tubes from this era are highly regarded for their warm, musical tonality and robust American engineering, making them a staple for high-end audio and vintage restorations.
This tube has been thoroughly analyzed on the Amplitrex AT1000 digital tester. Following our Percentage Method, the results below show how each triode section performs relative to the 100% factory design-center specifications for this tube type (Ip = 1.2mA / Gm = 1600 µMhos).
| Serial No. | Triode Section | Parameter Ip | Result Ip | % Ip | Parameter Gm | Result Gm | % Gm |
|---|---|---|---|---|---|---|---|
| #5205001 | Section 1 (T1) | 1.2 | 0.9 | 75% | 1600 | 1300 | 81% |
| Section 2 (T2) | 1.2 | 0.6 | 50% | 1600 | 1200 | 75% |
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