Fiio X1 High Resolution Lossless Music Player (Silver) The FiiO X1 Gold High Resolution Lossless Music Player supports APE, FLAC, WAV, WMA, ALAC at up to 192kHz/24bits. Also supports MP3 Dedicated professional high-quality amplifier-The X1 also employs Intersil's newest ISL28291 amplifier buffer. Dedicated professional high-quality DAC chip Utilizes Texas Instruments' Newest PCM5142, greatly surpassing the integrated DAC chips on smartphones. The X1 supports the five major lossless music formats, APE, FLAC, WAV, WMA, ALAC, at up to 192kHz / 24bits of mater tape quality resolution. Plus mp3, aac, ogg vorbis.. Power on / off transients: MOS switch in conjunction with ultra-high-fidelity ISL54405 switch eliminates on / off pop noises