Don't trust your utility company, trust Furman
My old unit blew up (literally) and that was quite a fireworks show but it was almost 20 years old and parts will go eventually and so I bought the new model (AR-1215) and it's worked perfectly. No matter what the local utility company decided to send me (130 V usually), I can just sit back and grin knowing that my computer, A5X monitors, etc are all getting 120 V, no more, no less. And if the power surges too much, unit goes off. Power goes off? My backup battery kicks in.
If you have a home studio, it is WELL worth the money to protect it over the long haul with this unit.
The unit is DEAD quiet when stepping the voltage up or down within say 10 volts. It gets noisier if it has to maintain a large variance because more coils of the transformer are engaging.
Very pleased and hope this one lasts 20 years.