Power Output: 370 W, Dolby 3.1 channel, Surround Sound expansion, 4 Speakers Special Features: Dolby Audio / DTS Virtual:X | Built-in Center Speaker | Subwoofer with Bass Boost | Adaptive Sound Audio Feature: Center Speaker | Voice Enhance Mode | Night Mode |Bass Boost | Surround Sound Expansion | Game Mode | Adaptive Sound | DTS Virtual:X Connectivity Options: 1 HDMI In| 1 HDMI Out | HDMI eARC | HDMI CEC | Optical In | Bluetooth | One Remote Control Free Installation: Samsung Installation Team will contact you for Demo/Installation within 24-48 hours of delivery or at the delivery schedule chosen by you at the time of placing an order to confirm the Service request. Contact us within 72 hours of delivery if you miss our service call