This one is my fault I know but when I first got into x10 I was using it to turn on and off a small audio mixer with a lump in the line xformer. I saw the lamp controller said for incandescent lamps only but paid no attention and used the one I had to turn on and off the mixer. It worked for weeks! Pfft, incandescent lamps only......
What I did not know is that I had a fast starting lamp controller and when I bought 5 more to control 5 more mixers I bought soft starters without my knowledge that they even existed. The mixers worked for one day then all 5 of them fried but the first one with the fast start.
That cost some money for 5 new lump in the line xformers and no there was no discernible difference between
the controllers. It's been a while and I
was pretty much over it Dan.