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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. KT66MP Tube, Matched pair, Beam Power Amplifier, KT66 / 7581A, Taylor

    KT66MP Tube, Matched pair, Beam Power Amplifier, KT66 / 7581A, Taylor

    $49.90

    KT66MP Tube, Matched pair, Beam Power Amplifier, KT66 / 7581A, MFR: Taylor

  2. 7581A/KT66 Tube, Beam Power Amplifier, Mfg US brand

    7581A/KT66 Tube, Beam Power Amplifier, Mfg US brand

    $59.95

    Out of stock

    7581A/KT66 Tube, Beam Power Amplifier, Mfg US brand

    7581A/KT66 Tube, Beam Power Amplifier -  Audio Tetrode, MFR: US brand

  3. 7581A Tube, Beam Power Amplifier, 7581A / KT66, JAN/Philips

    7581A Tube, Beam Power Amplifier, 7581A / KT66, JAN/Philips

    $69.95

    Out of stock

    7581A Tube, Beam Power Amplifier - Audio Tetrode, 7581A / KT66, special purpose, JAN - Philips/ECG

  4. 7581A/KT66-MP-US Tube, Matched pair, Beam Power Amplifier, US brand

    7581A/KT66-MP-US Tube, Matched pair, Beam Power Amplifier, US brand

    $119.90

    Out of stock

    7581A / KT66-MP-US  Tube, Matched pair, Beam Power Amplifier, US brand Select grade

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