X3 is a Hi-Fi level digital music player made for audiophiles. With smart size, light weight, fashion outlook, it can be brought conveniently when you are at home, on business, on travel or anywhere. It can support all popular lossless audio formats, supports up to 24 bit/ 192 Khz master level high definition sampling rate and also supports DSD format. To meet the bigger capacity of lossless audio, X3 supports 2 pcs of 128 GB micro sd card using at the same time.. With HD OLED screen, letterss can be read clearly in the sunshine.Main featureSupport DSD playbackPCM 24/192Dual SD card supportCompact 100g sizeSuports DSD: DSF, DFF (up to 2.8224 Mhz) PCM: APE, FLAC, WAV, AIFF, ALAC, WMA (up to 24 bit/192 KHZ), MP3, OGG, ACCIntelligent Detection: The playback will pause automatically once the headset is unplugged and the player will shut down automatically if there is no operation for a set period of time. Once the lineout jack is connected, the volume will be auto set to maximum. It will return to normal volume after disconnecting line out jack.8 hours playback, less than 2 hours charge timeUses high performance audio processing chip of item JZ4760B from Ingenic company.Uses flagship class CS4398 from Cirrus Logic companySpecification:Operating system: LinuxBattery: 3.7v/1500 mAhScreen: 1.3 inch OLED screenShell material: Aluminium alloyStorage: Supports 2 pcs of 128 GB micro sd cardSupported music format: DSD, APE, FLAC, WAV, AIFF, ALAC WMA, MP3, ACC, OGGSupported sample rate: DSD 2.8224 MHZ, PCM: 16-24 bit/ 44.1k-192KHZOutput power: 250 mW (32 ohm load)Line output level: 1.5V rmsFrequency response: 20 Hz- 20 KHz (+/-0.5 db)Gain: +6dBTHD+N: 0.002% (1KHz)S/N: 112 dBSuitable Headphone Imedpance: 8 ohm - 150 ohmPlayback time: 8 hoursCharge time: Fast charge < 2, slow charge <4 HSize: 105.5*45*14mmWeight: 100gItems in the package:X3 playerUSB cableScreen protectorUser manualWarranty card