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    Pentode instead of UL in ST-70



    Posts : 15
    Join date : 2012-01-01

    Pentode instead of UL in ST-70

    Post by SuperB on Tue Jan 31, 2012 9:41 am

    Can I run the output stage (tubes) in pentode fixed screen mode with regulated voltage to the screen grids in the VTA ST-70?

    Also, it has 40mf as the first cap and 30mf for the driver section in the power supply, anyone tried those positions with PIO cap?


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