The HT600 has the 2.1-Channel High-Quality Sound System with wireless subwoofer with Dolby Atmos- Audio System: 2.1 ch, 360W - Main unit 80Wx2, Subwoofer 200W-- Bluetooth® Panasonic Music Streaming App, - Easy Operation: Wireless Subwoofer, ARC (Audio Return Channel), VIERA Link, Wall-Mountable Speaker- Speaker Configuration: Front: 1-way 2 speaker, Bass-reflex / Full Range: 4.5 x 10cm x 2 , WirelessSubwoofer: 1-way 1 speaker, Bass-reflex, Woofer: 16 cm- Terminal: HDMI Output x 1 (TV), HDMI Input x 1 (BD/DVD), Optical Digital Audio Input (TV) - Bass boost