What is a Choke?


I was at an audio store and saw a small box with four power outlets which was connected to the wall and then to a few components. The salesperson said it was a "choke". I can't remember the brand (not a PS Audio item, though), but, not surprisingly, the salesperson highly recommended it @ ~ $800. What was it that I saw? How does it work? Does it work?
leftistelf

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