RAYTHEON 5687WA – SINGLE TUBE (1 PC)
Black Plate
Top Ring Getter
Military Spec (5687WA)
Dual Triode 5687
New in White Box
Amplitrex AT1000 Tested
Up for sale is a premium vintage NOS Raytheon 5687WA dual triode vacuum tube, manufactured in the USA and supplied in a white box. Highly prized by audiophiles for rugged construction and superior audio performance, this military-grade tube features black plates and a top ring getter structure. Excellent choice for high-end audio preamplifiers, driver stages, and headphone amplifiers requiring top-tier 5687 / 5687WA dual triodes.
This tube has been fully tested on a precision Amplitrex AT1000 tube tester. Plate Current (Ip in mA) and Mutual Conductance (uMhos) measurements alongside percentage performance ratings relative to nominal factory reference specs are detailed in the table below.
| Serial No. | Triode Section | Plate Current (Ip) | Mutual Conductance (uMhos) | ||||
|---|---|---|---|---|---|---|---|
| Ref Spec | Result | % Ip | Ref Spec | Result | % uMhos | ||
| SR.NO.2989002 | Triode 1 (T1) | 12.0 mA | 8.4 mA | 70% | 5400 | 4500 | 83% |
| Triode 2 (T2) | 12.0 mA | 8.6 mA | 72% | 5400 | 4400 | 81% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
Reviews
There are no reviews yet