As well, some ground fault circuit interrupt (GFCI) devices may not operate properly off of a modified sine wave inverter.

When it comes to pricing, modified sine inverters are usually a lot cheaper. For example, the Ryobi ONE+ 18V 150-Watt Push Start Power Source at Home Depot is only $80.

You could save a lot of hassle and loss via inverters that way, although the wire loss might add up. I wonder what voltages a stereo requires.

Xantrex has introduced the Freedom Xi, what it calls “a new generation” of advanced true sine-wave inverters specifically engineered for use in all types of mobile applications. The Freedom Xi marks ...

The "value priced" PROwatt SW line is said to offer an affordable alternative to modified sine-wave inverters. When used with the optional remote control panel, it features ignition lockout to prevent ...