AT-2300 is a 12 channels decoding integrated amplifier AV receiver. It supports Dolby Atmos, Dolby Vision, DTS:X, 3D, 4K, HDR and all backward formats. It also supports HDMI ARC, Bluetooth, App control, TF card, USB disk and APE, FLAC, WAV, MP3, WMA formats. The 5.1.2 speaker layout for digital Karaoke is going to rock you. As a top 10 audio brand in China, Tonewinner has 30+ years experience in designing and manufacturing acoustic products.