Two, NEW, RCA 5691, red base, matching date pair, 1958, hi reliability, 6SL7GT
USD 348.95 USD
Specifications
| Brand | RCA |
| Type | NOS Tube |
| Model | 5691 |
| Country Of Manufacture | United States |
| MPN | 5691 |
| Country Of Origin | United States |
Two, new in box, RCA 5691 tubes, the long life/high reliability 6SL7GT. Red micanol bases, black plates, reinforcing rods. The 5691 is of course the ruggedized, low microphonics, low noise, high reliability, long-life version of the 6SL7GT tube and can be used in applications calling for the 6SL7GT.
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