Electrical question

If my electric falls to 112 volts am I croaking my gear until I get it resolved…Otherwise I will cut the microwave cord because my wife won’t quit using it in the meantime..definitely don’t want my Pass gear Sit-4 damaged…

Put the microwave on a "Jackery" battery back-up or similar.

My microwave and frig are on the same 20 amp circuit and my Jackery (1,500 continuous/3,000 peak) can run them both.  The time you run the microwave won’t deplete it and it continually recharges from the wall.

Plus, if you ever have a power failure, you have the Jackery for back-up.

And, they are nice for camping and anytime you may want to be able to use a small appliance where there is no power available.  Even nice for things like soldering in the yard without a long extension cord trailing along.

You can even get solar panels to charge them.

You may get better sound with a dedicated AC line for your audio system, or at least separated from high current drawing appliances such as a microwave.  But I don’t think the lower voltage or limited current would damage your equipment.

There maybe be some equipment that suffer from under-voltage situations, but thst means far less than 112.  

More troublesome are things with motors that frequently and randomly come on and off, i.e. refrigerator’s compressor, furnace’s fan, lights on/off, all making unsteady supply and noise on the line.

One thing you can do is use a unit like the Furman PFR 1800

https://furmanpower.com/products/p-1800-pfr?srsltid=AfmBOorgkUijQxvj1W3EA1RrrglykQvVOmOOQ8ny0fQJZLceBtKRYDO6