Alexanderj may have hit upon something in terms of current overload and / or increased crosstalk between the power supplies of the preamp and digital gear. From a theoretical standpoint, it is best to isolate digital gear by itself. Many PLC's have individual filtering with different types of circuitry with labeled outlets for this very reason.
Other than that, many commercial products sound like "crapola" for various reasons. There is no amount of Pro-Gold that could correct such a problem. Sean
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Other than that, many commercial products sound like "crapola" for various reasons. There is no amount of Pro-Gold that could correct such a problem. Sean
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