We use non-polarized 2-Pin IEC 320-C7 cables. These are fairly standard cables and are commonly used with some laptop chargers as well as devices like the Apple TV and the Playstation 3 Slim, so you should be able to find them locally if needed. You can also find them in the Accessories section in our webstore here:


It's worth mentioning that the original A5s as well as the S8 subwoofer use a polarized 2-Pin IEC 320-C7, which has a flattened side as well as a rounded side (as opposed to both sides being rounded as on non-polarized cables).