The LG LHD657 is an integrated home theater system with a sound output of up to 1000 watts and 5.1 channel surround sound. The system consists of a main DVD player, four tall boy speakers for the corners, a center speaker, and a subwoofer. Audio Specifications and Power Distribution: Total Sound Power: 1000W RMS for a powerful, cinema-like audio experience. Speaker Power Distribution: Power is distributed at 167W per channel (3 Ohms): Front Speakers (Left/Right): 167W x 2. Rear Surround Speakers (Left/Right): 167W x 2. Center Speaker: 167W. Subwoofer: 167W (Passive Ceramic). Audio Technologies: Supports Dolby Digital and DTS for decoding and precise surround sound distribution. Bass Blast Technology: Built-in sound matrix system to enhance bass frequencies, making the sound deeper and more dynamic. Connectivity and Ports: Bluetooth: Allows wireless streaming of music and audio from phones and tablets. HDMI Out: One output to connect the theater system to the TV and transmit digital video and audio. USB Port: Supports playing movies and music directly from a flash drive or external hard drive. Optical Input: Digital audio input for connecting modern TVs or gaming consoles. Microphone Inputs: Features two Mic Inputs to support karaoke functionality. Additional Ports: Composite video output, Portable In audio input. FM Radio: Supports receiving radio stations with a built-in antenna. Media Playback and Video Processing: Multi-Disc Player: Supports playback of DVD and CD discs in various formats (e.g., DVD±R/RW and CD-R/RW). 1080p Up-scaling: Upscales standard DVD movies to near Full HD resolution when connected via HDMI. USB Direct Recording: Allows you to record audio from CD discs or FM radio programs and save them directly to a flash drive. By God, I swear this device has been personally used by me and is very clean, like new. The reason for selling is that I no longer need it. Therefore, please do not undervalue my item. May God grant success.