Feel every beat with power: Equipped with two 2.5" full-range drivers and a 4" wireless subwoofer, they deliver balanced, high-quality sound with clear bass, vocals and treble. TCL's exclusive Bass Enhancement technology adds more impactful, thrilling audio. Top sound for your TV : AI-Sonic adaptation adjusts sound by calibrating your room from all angles. Tutti Choral unites TCL TV speakers and external soundbar for clearer vocals, a more immersive soundstage, and stunning home theater audio. Dolby Atmos & DTS Virtual: X decoding :The most advanced decoder interprets sounds as 3D objects without directional limits. Virtual sound delivers detailed reproduction for immersive experience in any room. Optimized Sound Modes: Based on 6 preset EQ sound modes (Movie/Music/News/Sports/Game/TV) ,you get more in your daily TV scenes. Easy connection & One remote control : Wirelessly stream music from smartphone, tablet or laptop. The TCL S55HK connects to your TV via a single HDMI eARC cable. TV & Soundbar can be controlled with one remote for better experience.