SYLVANIA 5670-2C51W – SINGLE TUBE (1 PC)
GRADE: PLATINUM SERIES | VINTAGE USA MANUFACTURE
Sylvania USA Branding
Black Plate
Top Ring Getter
Dual Triode (5670 / 2C51W)
New in White Box
AVO Type 160 Tested
Up for sale is a single vintage NOS Sylvania 5670-2C51W dual triode vacuum tube, supplied in a white box. Made in the USA, this highly desirable military-grade valve features black plates and a top ring getter for exceptional audio clarity, low noise, and dynamic detail. Perfect for high-end audio preamplifiers, DAC buffer stages, and headphone amplifiers utilizing 5670 / 2C51 tube types.
This tube has been fully tested on a precision AVO Type 160 tube tester. Anode Current (Ia in mA) and Mutual Conductance (mA/V) measurements for both triode sections, alongside percentage performance ratings relative to reference factory specifications, are detailed in the table below.
| Serial No. | Triode Section | Anode Current (Ia) | Mutual Conductance (mA/V) | ||||
|---|---|---|---|---|---|---|---|
| Ref Spec | Result | % Ia | Ref Spec | Result | % Gm | ||
| S/N: 5405006 | Section 1 | 8.2 mA | 13.8 mA | 168% | 5.5 mA/V | 6.8 mA/V | 124% |
| Section 2 | 8.2 mA | 15.6 mA | 190% | 5.5 mA/V | 7.5 mA/V | 136% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
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