[NO. 1 TRAVEL ADAPTER USA BRAND] Ceptics Voltage Converter - Patented Technology allows you to use your Curling Iron, Straightener upto 200W in 220V Countries. Converts 220V voltage in Europe ...

These plug straight into a laptop (or to a phone, via a converter adaptor), Or you can get a wireless DAC like the five-star iFi GO Blu, which can connect to a source (though not your headphones) via ...