The quality on the 12volt models isn't always as good as the 110volt equivalent. An inexpensive inverter can easily power any range of electronics.
I use a 400 watt MSW (Modified Sine-wave) on a switched circuit to run our TV, DVD, Roku, etc.... when no shore power is available and it's too late to turn on the generator.
Since the time that I built my setup, the price on the True Sine Wave Inverters has come down some more, making it a more feasible route to take on a budget and will improve the quality of usage of any 110 electronics you want to use.
Just remember, you're going to need a good-size battery bank if you want to use electronics repeatedly while boondocking :).