When to purchase a modified sine wave inverter? by e Marine Systems Tuesday, March 24, 2015 When to purchase a modified sine wave inverter? It’s awful tempting to purchase a modified sine wave (MSW) inverter when you look at the price comparison (3 to 1 typically) to a true (pure) sine wave inverter (TSW). modified sine waveinvertersmodified sine wave inverterpure sine wave invertertrue sine vs pure sine Read More