1. Simple and elegant intelligent operating system, full digital microcomputer menu control 2.Using the latest dual decoding chip, support (AC-3, DTS, PCM) optical fiber, coaxial, high-definition decoding 3.8-channel independent volume adjustment, intelligent output protection circuit 4.High-speed central processing unit, automatically recognize audio input signals 5.Full-digital professional KTV karaoke mixing circuit, automatic noise reduction and electronic anti-acoustic processing function 5.U disk playback, support lossless audio formats: APE/FLAC/WAV and WMA/MP3 6.Built-in high-end Bluetooth chip, support most mobile audio devices 7.With a full-function infrared remote controller 8.3 HD HDMI inputs, support 4K HD 3D video, support ARC (TV Audio Return) mode, support standby output audio to TV