♫『DUAL DAC CHIP & PRECISION FPGA CHIP』Built in DUAL Ess flagship ES9218P DAC chip, the lossless music player delivers a powerful decoding and an SNR of up to 130dB and THD+N down to -114dB, which are excellent to ensure audiophile quality sound all the way. With the dedicated FPGA chip HBC 3000, the accuracy of digital music reproduction can be increased by master clock and the clock jitter can be perfectly controlled. Meanwhile, it can hardware decord Native DSD 64/128/256..♫『BI-DIRECTIONAL BLUETOOTH 4.2 & UAT TRANSMISSION TECHNOLOGY』AP80 PRO supports Bidirectional Bluetooth 4.2, Hiby UAT, Sony LDAC and APT-X. It can output as a Bluetooth audio source but also can be a professional Bluetooth decoding amplifier. UAT is an all-new Bluetooth audio code developed by HiBy. Support an industry-highest sample rate of 192kHz at an industry-highest data bandwidth of 1.2Mbps, even adapt and optimize itself to different music genres. Support HWA/SBC/FLAC/APE/WMA/WAV/SACD-ISO..♫『 SINGLE-ENDED 3.5mm & BALANCED 2.5mm JACKS& Samsung IPS HD TOUCHSCREEN』Our AP80 PRO MP3 Player is designed with single-ended 3.5mm and balanced 2.5mm jacks illuminate each other, you are assured the best possible listening experience. Desgined with Samsung 2.45" (480x360) IPS HD touchscreen, that is worldwide recognized professional music player system in software development. It allows responsive sensitive touch, clear picture quality, rich visual details, swipe control and silent operation..♫『 BI-DIRECTIONAL USB DAC & EXPANDABLE STORAGE CAPACITY』AP80 PRO Hi-Fi digital audio player can be a digital source after connecting the USB amp with DAC input function, also can be connected to a mobile phone and a computer as an external decoding amp. Doesn’t built-in memory SD card, but it supports up to 512G expandable storage with micro SD cards. With high capacity battery, enjoy up to 9-13 hours of continuous playback and over 50 days of deep standby. Note: 9h for BAL,13h for PO..♫『PORTABLE MP3 PLAYER & FM RADIO & STEP COUNTER』Our HiFi Music Player is portable and light. It supports time screen-saver, one button to lock, FM Radio, Step Count. With the high-precision step counter function, AP80 PRO can provide accurate outdoors workouts data to lead to absolute harmony of music, life and sports.Please turn in on radios if lack of interest in music. Massive high-quality radio programs,such as finance,entertainment,health,emotional story,etc.