Why is only 1 AC power supply included with the W3?

We agonized whether or not to include 2 chargers in the box but figured that most people these days are very likely to have an extra USB charger or two from an old smartphone or tablet. These power supplies are inexpensive and can be found at your local Radio Shack or electronics store. We also have extra USB adapters available through our web store – http://audioengineusa.com/USB-Power-Adapter.