One of the best home theater sound bars you can get from world class HiFi audio manufacturer Denon. The original documentation and all accessories are included. It’s in excellent condition and works flawlessly. Heos supports Hi-Res audio, 96 KHz/24 bit, where the highest Sonos supports is CD quality, 44.1 KHz/16 bit. The sound quality from this soundbar and wireless subwoofer is incredible. Description from manufacturer: Add dimension and power to your favorite movies, music and video games with the HEOS HomeCinema HS2 wireless sound bar and subwoofer. The HEOS HomeCinema HS2 features bi-amplified mid-woofers and tweeters with advanced DSP processing, plus a wireless subwoofer. Includes HDMI input and output with Audio Return Channel for single wire connection to your TV. Dolby Digital, Dolby Digital Plus and DTS decoding for immersive sound. Listen to your favorite music services via Airplay2, Bluetooth and high-resolution audio playback. Easily stream music hands-free with Amazon Alexa voice control. Enable the HEOS Home Entertainment Skill and speak your commands.