[【Dual ES9039Q2M DAC Chips】DO100 Pro adopts dual ES9039Q2M decoding chips and XMOS XU316 chips to provide excellent audio performance. USB input supports DSD512 and PCM32bit/768kHz audio formats ensuring you can enjoy an extremely clear and authentic music experience. 【Multipurpose Audio DAC】DAC has USB optical fiber Bluetooth coaxial HDMI (ARC) multiple inputs as well as RCA and XLR output to meet all your needs for high-quality audio experience. "【8X MQA Decoding】DO100PROs USB optical and coaxial inputs all support complete MQA decoding up to 8x expansion and MQA-CD you can enjoy sound quality close to the original recording." 【HDMI ARC Function】The DO100 PRO features an HDMI ARC input for high-quality audio transmission with compatible TV devices. *To use the HDMI ARC function you need a TV with HDMI ARC function. During the operation confirm that the audio output format is PCM and the TV output mode is set correctly. 【 Two USB Modes】 DO100PRO supports two USB modes: USB1.1 driver-free mode and USB2.0. USB1.1 driver-free mode is suitable for PS5 and Switch game consoles making it easy to connect to the game consoles and enjoy gaming fun. 【Bluetooth5.1 LDAC】DO100Pro is equipped with QCC5125 Bluetooth5.1 chip and supports LDAC 24bit/96kHz APTX/HD SBC and AAC audio transmission. It can be connected to mobile phones and computers via Bluetooth at any time to enjoy high-quality music. "【Tips】 The DO100 Pro supports *HMDI ARC* not support *HMDI eARC*. Only HMDI eARC supports CEC. After the DO100 Pros ARC is connected to a TV the DAC does not support the TVs remote control to control the TVs volume nor does it support synchronous power on and off." 【Tips】 When using USB input if you switch the USB1.1 or USB2.0 mode you need to restart the DO100pro to correctly identify the audio source device.]