Built-in center and side speakers. Dolby Digital 5.1 creates realistic surround sound. DTS Virtual:X expands your listening experience. Subwoofer with Bass Boost. Adaptive Sound - hear voices better even at low volume. Game Mode - perfectly synced directional audio. Bluetooth Multi-Connection. Voice Enhance Mode. Night Mode. 1 HDMI in and 1 HDMI out. USB Music playback. Digital (optical) audio input. Includes: Remote control with batteries. Wall mount kit. Optical cable. Power adapter.