FiiO X3 is a digital music player manufactured and marketed by FiiO Electronics Technology. The player utilizes Wolfson DAC and is capable of reproducing music sampled at 192kHz with a sample size of 24-bits per channel, and to function as a USB audio interface. The X3 is the mid-level member of the FiiO X Series of portable music players. It supports major lossy music formats, such as MP3 and lossless music formats such as FLAC.