kt66 quad

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US Audio Mart

KT-66 WC Quad Matched Set Cryotone Tubes US Audio Mart $750 Nov 3, 2025

OldSound

6L6WGB JAN SYLVANIA 5881 CV2796 KT66 VALVE QUAD TETRODE POWER AUDIO AMPLIFIER OUTPUT 100% OK OldSound €399 Sep 1, 2023

OldSound

6L6WGB JAN-CTL TUNG-SOL 5881 CV2796 KT66 VALVE QUAD TETRODE POWER AUDIO AMPLIFIER OUTPUT 100% OK OldSound €359 Sep 1, 2023

OldSound

6L6WGB JAN-CTL TUNG-SOL 5881 CV2796 KT66 VALVE QUAD TETRODE POWER AUDIO AMPLIFIER OUTPUT 100% OK OldSound €379 5% Sep 1, 2023