Sir Knownothing,
Thank you for your concerns. I too am concerned and careful with the use of the magnets in my hi-fi. I have had one product over 30 years flame out on me and the internal fuse did not blow or trip the dedicated circuit breaker located next to the equipment. I have a dedicated method of turning all equipment on in a set sequence and then turn off in the reverse sequence. I have always done it this way, pre magnets or post.
Much of my listening is done in the early evening with this system watching satellite tv on a front projector and retractable screen. After a couple hours the system is juiced up and stable enough to switch over to some serious listening. Thanks for reminding me of the fire extinguisher right over there by the fireplace. I have in the last several months been shutting the system down, before the installation of magnets, trying to save the planet. I will in the next couple of days install the last magnet in my Belles 21a preamp even with its use of two 12au7's. This preamp is very simple in its number of parts and super stable in all performance aspects. It does have a remote with volume, mute and power. I have answered my own concerns and maybe yours as well..Thanks for asking. Oh, the ac mains box now with no door, though covered is on an adjacent wall 11 feet from my chair. Tom