Features: HIFI Audiophile sound quality.  Mini MP3 size, easy to carry.  Support DSD256.  Support 24BIT.  Full format decoding.  MIPS + DSP architecture.  DAC decoding.  2.5D glass screen.  Personality turntable.  Fast charge.  Mobile OTG copy.  Support DSD256 lossless format .  Music signal through the master IC direct audio decoding, remove the DOP link.  Greatly reducing the sound quality loss, to achieve real original music player.  Good sound from a strong "core".  Equipped with professional DSP + DAC dual decoding architecture, depth optimization of audio lines.  Multi-function knob + CNC carved process.  A50 using Japan ALPS roller multi-function button + CNC carved process.  Metal Case.  Drawing process.  CNC carved.  CNC integrated molding.  Personality turntable, flexible operation.  Using balanced wheel control system and UI interface synchronization display, you can quickly song.  A50 for the audiophile and students, the real HIFI lossless music support full format lossless music player, no longer have to change the format.  Strong Driving thrust.  Using noise reduction before the level of voltage amplification + post-level sensitivity accuracy.  The current amplification of the ear to boost the sound launch, so you immersive, unparalleled.  Supports CUE format files.  Record track information, enjoy the track after the shock effect of the general CUE format file to be combined with the original audio file to play.  Smart fast charge: Optimize the circuit, reduce power consumption, built-in fast charging module.  Ruizu A50 one hour can be fully charged, can be played continuously for more than 15 hours.  Support mobile phone OTG high-speed transmission.  With a powerful OTG transmission function, no computer directly connected to the phone copy download the desired song.  Note: OTG function only supports Android system.  High-definition large-screen UI visual experience.  Intuitive and simple UI interface, the operation at a glance, the display color saturation is high, can display lyrics and song name.  Breakpoint play album cover display.  Record the progress of music playback, the next boot can then play, can automatically synchronize the lyrics display, album cover display (maximum 640x640)    Specifications: Headphones, the output power ≥ 80mW.  Transmission interface:MICRO 5PIN, USB2.0;  System language:support multiple languages;  Expansion card:Support MicroSD (TF) card to 128GB( not included );  Storage type:Flash Memory;  Memory capacity:NO Memory;  Screen size:2.5ISP glass screen 240 x 320 display;  Battery:800 mA polymer battery;  Operating system audio format:Window XP, VISTA, WINDOWS 10;  Support Format:MP3, WMA, WAV, APE, FLAC, ACC, OGG, AIFF, DSD256;  Charging time:about 1 hour (using 5V / 1000 mA charger);  Play time:about 15 hours (headset volume 30 screensaver to play lossless music);     Package Included: 1 x Ruizu A50 MP3;  1 x USB Cable;  1 x User Manual;  1 x Earphone