The Samsung 2.1 Channel Sound Bar Model HW-B550 features:

• Audio Channels: 2.1-channel system with a wireless subwoofer.

• Total Power Output: 410 watts (250W from sound bar, 160W from subwoofer).

• Sound Technology: Dolby Audio and DTS Virtual: X provide immersive 3D sound without the need for up-firing speakers.

• Sound Modes: Bass Boost, Surround Sound Expansion, Game Mode, Adaptive Sound Lite (optimizes audio based on content), and Standard mode.

• Subwoofer: 6-inch wireless subwoofer with a bass-reflex (ported) enclosure for powerful bass.

• Bluetooth: Built-in for wireless music streaming; supports Bluetooth Multi Connection to pair two devices simultaneously.

• Connectivity: 1 HDMI input, 1 HDMI output (ARC supported), 1 Optical digital audio input, USB port for audio playback.

• Size and Weight: Sound bar measures about 33.9"W x 2.3"H x 3.1"D, weighing 4.6 lbs; subwoofer approximately 13.6"H x 7.2"W x 11.6"D, weighing 11.2 lbs.

• Control: Comes with a remote control; supports Samsung TV One Remote function.

• Additional: Wall-mount kit included; ENERGY STAR certified; optional compatible Samsung wireless surround speaker kit.
  

This soundbar is designed to deliver clear, room-filling sound with enhanced bass and 3D audio effects, making it great for movies, music, and gaming.