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7581A / KT66

The 7581/A tube is an industrial strength version of the 6L6GC which is also said to be the American equivalent to the British KT-66. The ratings 7581 are roughly the same as the 6L6GC while the 7581A has higher ratings. The 7581 has a plate voltage rating of 500 V--35 watts (5 watts more than the 6L6GC) and a screen rating of 450V--5 watts.

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  1. KT66 / 7581A RF Parts Beam Power Amplifier Tube, Matched Pair

    KT66 / 7581A RF Parts Beam Power Amplifier Tube, Matched Pair

    $99.91

    Matched pair of RF Parts brand KT66 tubes
    Made in China
    SKU: KT66

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