What is this odd little box I've been storing for years?

I received this switch/pot a few years ago with a used preamp and have never been able to identify it. When I asked the seller he said he didn't know either, he just thought it was part of the preamp (it's not). I wish I could post a picture here - but it's about a 3.5"black cube, with an older brown AC cord, an on/off rocker switch, fuse holder and small attenuator pot on the front. I though it might be a wireless remote switch for a turntable, but can't find any similar images online. Any ventured guesses would greatly helpful
Glenn

gwbeers08-07-2018 12:44pm

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geoffkait Details Discussions Posts This discussion 23,365 posts 08-07-2018 at 08:12pm Copy Comment URL Report Comment Edit Delete celander, you have my permission to sew that guy’s 🍑to his face.
almarg Details Discussions Posts This discussion Message User 9,670 posts 08-07-2018 at 08:18pm Copy Comment URL Report Comment Edit Delete The shaft of the pot only turns 180 degrees. Inside there’s a transformer (EWC31004GO5), the base of the cylindrical fuse holder, the rear of the pot is a rheostat with a black resistor inline to the transformer.... The only thing I can think of at this point is that it might be a piece of test equipment, perhaps for the purpose of applying a variable load to the output of AC power supplies of some sort. The fact that the device does not provide an output would seem to rule out any other possibility I can think of. Regards, -- Al
celander Details Discussions Posts This discussion Message User 1,502 posts 08-07-2018 at 09:45pm Copy Comment URL Report Comment Edit Delete The odd thing is that once you toss it out, you will figure out that you need it for something. Lol
jnovak Details Discussions Posts This discussion Message User 410 posts 08-08-2018 at 12:02am Copy Comment URL Report Comment Edit Delete My first thought was "maybe it's part of something like the B&W bass alignment filter". Look at one. Joe
viejomalo Details Discussions Posts This discussion Message User 1 posts 08-08-2018 at 12:27am Copy Comment URL Report Comment Edit Delete Sounds like it might be an old lamp dimmer.