RAYTHEON 2C52 – MATCHED QUAD 4 PCS
GRADE: PLATINUM SERIES | VINTAGE NOS US MILITARY SPEC DUAL TRIODE
2C52 High-Mu Dual Triode
Black Round Plate
Top Square Getter
Black Base
New in White Box
Hickok 752A Tested
Up for sale is a matched quad (4 pieces) of rare vintage Raytheon 2C52 dual triode vacuum tubes, brand new in protective white boxes. Made in the USA, these industrial/military-spec tubes feature robust black round plates, top square getters, and sleek black bases. Renowned for their ultra-quiet operation, exceptionally low microphonics, and linear performance in specialized audio equipment and preamplifier applications.
As shown, all four tubes have been thoroughly tested on a professional Hickok 752A tube tester. Mutual conductance (Gm) measurements alongside percentage performance ratings relative to nominal specs are detailed in the table below.
| Serial No. | Triode Section | Transconductance (Gm) | ||
|---|---|---|---|---|
| Ref Spec | Result | % Gm | ||
| S/R.NO. 177040 | Triode 1 (T1) | 600 µMhos | 1,000 µMhos | 167% |
| Triode 2 (T2) | 600 µMhos | 1,000 µMhos | 167% | |
| S/R.NO. 177041 | Triode 1 (T1) | 600 µMhos | 850 µMhos | 142% |
| Triode 2 (T2) | 600 µMhos | 850 µMhos | 142% | |
| S/R.NO. 177042 | Triode 1 (T1) | 600 µMhos | 850 µMhos | 142% |
| Triode 2 (T2) | 600 µMhos | 900 µMhos | 150% | |
| S/R.NO. 177060 | Triode 1 (T1) | 600 µMhos | 950 µMhos | 158% |
| Triode 2 (T2) | 600 µMhos | 900 µMhos | 150% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
Note : We have more than 50 Pcs in Stock
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