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).
Related Items
EF184 RFT SINGLE TUBE VACUUM PENTODE RFIF-STAGE TUBE = 6EJ7 6F26 NOS TEST
(1) United Electronics FAA-805 VT-143 Transmitting Tube Filament Tested Strong
Vacuum Tube, EL34, JJ Electronics, Apex Burned-In Matched Quad, Power
RCA Germany 6DJ8/ECC 88 Tube
Valvo PCC88 7DJ8 Code DJ2 D1F Tested Like NOS Tube
2Sylvania GB 5687 Black Plates, Halo Getts, Gold Pins, Close Match/Balance
Two, RCA 5691, red base, matching pair, hi reliability, 6SL7GT
Matched quad Shuguang Treasure 50 years KT88-Z tubes Audio Valve tube KT88 4pcs