The X5 Portable High Resolution Music Player and DAC from Fiio is a portable music player and USB DAC capable of handling a variety of lossless and lossy digital audio formats, ranging from MP3s to above-CD quality files. It provides support DSD, APE, FLAC, ALAC, WMA, and WAV files, among others. The X5 has 2 microSD TF slots and supports up to 256GB of storage through them.
In addition to playing back audio from microSD TF cards, the X5 also functions as a USB DAC, allowing you to connect it to sources such as your computer for higher-quality digital to analog conversion than many stock audio cards. The 2.40-inch color screen allows you to display album artwork while the integrated 10-band graphic EQ allows you to tune the X5 to your headphones or your specific musical tastes. The player also provides a variety of output connectivity, including a 1/8" headphone output, a 1/8" line output, and a 1/8" coaxial digital output.
TI's PCM1792A as DAC, with THD<0.000015%
4 OPA1612 used for current / voltage conversion and amplification
2 LMH6643 used for headphone output
Mechanical scroll wheel (using Alps rotary switch components)
Custom user interface
All-mechanical interface can be operated out of eyesight
Shortcuts key allows fast access to essential options
Quick access to songs, and batch addition of songs to Favorites collection