bearotti
... in the summer my 120v is often more like 105-110v with neighborhood demand.Are you in the US? If so, that voltage is way out of spec in many states, where about 114VAC is the specified minimum. Although electric utilities can be very unresponsive to we audiophiles - I've learned that the hard way - you're best next step is to work with your utility to get your service corrected. It's likely that it's not only your voltage that is bad, but current, too, which can be tested and measured.