Matched Pair RCA 5881 Vacuum Tubes – Tested Strong B&K 747B (78/78, Min Good 65)
USD 135.00 USD
Specifications
| Model | Min |
| Brand | RCA |
| Type | Vacuum Tube |
Tester: B&K 747B Mutual Conductance Tube Tester. Test Reading: Both tubes test exceptionally strong at 78 / 78 (where 65 is the minimum good pass threshold on the B&K 747B).
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