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  1. W0ALA

    VTA Upgrade to Dynaco ST-70 problem.

    I recently upgraded an early Dynaco ST-70 with the VTA Octal driver board kit. I am having a distortion problem that I have had a problem finding. It seems that I have a really harsh bit of distortion on the right channel that sounds like the upper bass and lower midrange at 450hz to 1khz. with...
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