exactly. all power circuits are susceptible to line imbalances (+/- voltage), RFI, and external induction. all of which can take a cumulative toll on the circuits. plus, surge protectors (the common sort) turn into extension cords (i.e. 0 protect) within two years. everyone who posts on these boards should have an AC power filter/line conditioner (decent ones start around $80). even better is a transformer based isolation conditioner. these devices work in the real world. and if you're not in a G7 country you need to buy one even more because the grids are less reliable. as someone who lives in California, i can tell you that these precautions have saved my rig(s) not once, not twice, not three times but many many times because of the historic fires caused by the utility, then exacerbated by designed black-outs.