FiiO KA17 Portable DAC/Amp Purchased about six months ago and used with various settings in the app. Used only once (for about 3 hours), and has been stored in the box since then. Therefore, it's in almost new condition. The main unit is in good condition, but the box has some scratches, so please refrain from purchasing if you are looking for a brand new item. Shipped via Yu-Packet Plus.