| Model | 5963 |
| Brand | RCA |
| Plate | Black Plate |
| Getter | Foil Strip D Getter |
| Tube Type | Dual Triode |
| Variant | 12Au7 Sub |
| Common Use | Preamp, Audio, Amplifier |
| Date Code | 1956 and 1958 |
| Manufacture Date | 1956 and 1958 — Purchase dates or batch codes (tubes manufactured those years at RCA Harrison, NJ) |
| Country | USA |
| Condition | — |
| Box | — |
Tester: Hickok TV7
Results: 94/97 and 97/100
Minimum Good Value: 56/56
ALL TUBES ARE TESTED WITH RECENTLY CALIBRATED PROFESSIONAL TESTERS.
No additional notes.
| Domestic | USPS Ground Advantage — $8.00 |
| International | USPS First Class Intl — Small — $22.00 |
Free Combined Shipping for all USA Buyers. Buy As Many Tubes As You Would Like and Pay Only the First Shipping Fee.
Combined Shipping is available for all International Buyers.