RCA 6CA4

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RCA 6CA4 Vintage Tube - Tested TV7 V Strong $9 Feb 9, 2026

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RCA 6CA4 Vintage Tube - Tested TV7 V Strong $10 Feb 9, 2026

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2 NOS NIB Matched RCA 6CA4 Rectifier Tubes $52 Feb 8, 2026

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2 NOS NIB Matched RCA 6CA4 Rectifier Tubes $49 Feb 8, 2026

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2 x 6CA4-EZ81 RCA Tubes*O-Getter*Very Strong Testing*#6 $48 Feb 3, 2026

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RCA EZ81 6CA4 TUBE (strong tested) $29 Feb 3, 2026

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6CA4 Radio Tube New RCA NOS MIL spec Tested Ruggedized 1972 date code TV7 Tested $12 Jan 31, 2026

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RCA TUBE 6CA4 GOOD @59/59 LARGE ROUND GETTER NIB $35 Jan 29, 2026

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RCA Red Print Old Logo 6CA4 EZ81 Vacuum Audio Tube NOS NIB $65 Jan 29, 2026

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(2) RCA 6CA4 EZ81 Rectifier Tubes Early 1960s Gray Plates O Getters Tested TV-7U $44 Jan 3, 2026

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6CA4 NOS RCA 1960s radio audio amplifier vacuum tubes 2 valves tested EZ81 6CA4 $51 Dec 27, 2025

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RCA (Labeled Wurlitzer) 6CA4 Vacuum Tube Amplitrex and Guaranteed $20 Dec 24, 2025

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1 RCA 6CA4 / EZ81 Vacuum Tube Tested NOS Balanced 99/99 $29 Dec 14, 2025

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Vintage RCA Webster 6CA4 EZ81 Halo Getter Stereo Tube Results=2875/2700 USA $22 Dec 10, 2025

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NOS NIB new RCA 6CA4 vacuum tube tests new and balanced $19 Nov 19, 2025

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CLEAN 1960s Vintage RCA Harmon Kardon 6CA4 EZ81 BLACK Plate TESTS STRONG NEW NOS $19 Nov 1, 2025

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RCA 6CA4 rectifier that tests very strong (USA) $24 Sep 3, 2025

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Vintage NOS/NIB RCA 6CA4 Tube $27 Aug 29, 2025

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RCA 6CA4 EZ81 Tested Good Balanced Tube $18 Aug 24, 2025

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RCA 6CA4 EZ81 Tested Good Balanced Tube $18 Aug 24, 2025

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RCA 6CA4 Gray Plate Vacuum Tube Amplitrex Tested and Guaranteed $25 Aug 17, 2025

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RCA EZ81/ 6CA4 rectifier tests strong - USA $65 Jul 26, 2025

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Vintage NOS/NIB RCA 6CA4 Tube $29 Jul 26, 2025

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RCA Bogen 6CA4 Rectifier Tube TV7 Tested NOS $20 Jul 24, 2025

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1 X 6CA4 / EZ81 RCA TUBE. NOS/NIB. CB4 $31 Jul 22, 2025

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RCA 6CA4 EZ81 Tested Good Balanced Tube $24 Jun 4, 2025

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RCA 6CA4 EZ81 Label Motorola Tested Good Balanced Tube $24 Jun 4, 2025

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6CA4 EZ81 RCA Audio Receiver Rectifier Vacuum Tube Tested $24 Apr 19, 2025

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Matched Pair 6CA4 RCA same code NOS faded label Vacuum Tubes, B&K 747B Tested $44 Apr 19, 2025

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2 - RCA 6CA4 Vacuum Tubes / KT1 $47 Mar 1, 2025

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RCA 6CA4 Vacuum Tube / KT4 $24 Feb 25, 2025

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1x 6CA4 / EZ81 Rectifier RCA $18 Dec 31, 2024

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A MATCHED PAIR OF RCA 6CA4/EZ81 NOS/NIB VACUUM TUBES $100 Aug 9, 2024

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RCA 6CA4 Tube NOS Hickok 800A Tested (Box E) $27 Mar 19, 2024

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NOS RCA 6CA4 Vintage Radio Audio Amplifier Valve Vacuum Electron Tube * $44 Feb 3, 2023

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NOS NIB 1960 RCA 6CA4 Gray Plate Vacuum Tube Guaranteed $40 Dec 30, 2021

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NOS NIB 1973 RCA 6CA4 Vacuum Tube Gray Plate Guaranteed USA $40 Dec 30, 2021

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RCA 6CA4 EZ81 Rectifier Tube 110/110 each side Dumont Branding $29 Dec 24, 2021