I have found after owning Pass Labs gear for years that the inlet connection is often to blame for any problems. Use a cord with a well designed IEC (jaw strenth) to avoid power cord mania.
years ago when I had an X250, one of the gentlemen at Pass Labs, in so many words, told me the 'stock cord was fine & lose the powerstrip, plug it directly into an outlet', which I took as 'save your money & stick w/the stock cord'
The stock cords sounded just fine to me in my original setup. When I moved my system, the stock cords were not long enough for the new placement. I purchased longer power cords from Signal Cable and they sound great.
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