Power conditioner + voltage regulator


Is there a power regulator that is a voltage regulator at the same time?
50jess
Post removed 
The voltage at my house hovers in the 117v range. At nite? close to 118+. The day before our SoCal power outage (somebody in Arizona tripped on our extension cord) I noted voltage closer to 112 or 113. In summer during peak demand, I start shutting stuff off around 115 volts.
Generally unless you have widely fluctuating voltage, you do not need a voltage regulator.
Normal voltage ranges of 115 to 125 volts are no big deal.
Once you are getting sags down to 110V or overvoltage of 130 volts Then you have a problem
I agree in general with the exception I've personally noticed with my tube integrated. When the ac voltage varies the biasing on the tubes varies in a direct relationship.