On June 21, Sony China officially announced that the Sony home audio and video system HT-S400 was released at a price of 1990 yuan.

Sony home audio and video system HT-S400 includes echo wall monomer and 160mm unit 80W power large-caliber subwoofer, equipped with about 2.1 solid channels, using Sony space balance speakers, rounded rectangular design to increase the diaphragm area, reduce distortion, greatly improve vocal clarity. By combining Dolby sound with S-Force Pro's front-facing virtual surround technology, it simulates a cinematic surround feel.
Sony Home AV System HT-S400 supports Bluetooth connectivity, HDMI ARC audio backhaul and fiber optic input.
Sony's home audio-visual system HT-S400 has an OLED display embedded in the long speaker body, which can display the status information of input source, volume, soundstage, voice, night and other modes. The black long bar speaker supports flexible installation with the TV wall mounted or placed in front of the TV.