2.1,3.1,5.1,7.1 channel indicates (the number of speakers + Amplifier) which means number of speakers and Amplifier that can be connected with the home theaterNumber of Channels: 5.1 Channel
HDMI: 4 input
Maximum-Performance True 5.1 Home Theater Sound Bar and Wireless Rear Surround Sound SystemEnjoy the sonic power of the Polk MagniFi MAX maximum-performance home theater sound bar system—works with any TVPatented SDA digital surround technology creates an expansive, multi-dimensional sound experiencePatented Voice Adjust technology lets you customize the voice levels to reproduce clear, crisp dialogueStream music from your favorite apps over Wi-Fi, connect to your Google Home speaker and control your music with voice commands via Google Assistant
True 5.1 Surround Sound
Seven driver array, the included powerful wireless subwoofer and the SR1 Wireless Surrounds create immersive multi-dimensional sound via 5.1 Dolby Digital, DTS and exclusive Polk SDA® surround technology, for incredible room-filling listening experience.
Unique wall-mounting system for horizontal adjustment to ensure the sound bar remains level and centered under your TV.
Built-in Remote Control Compatibility
With Polk Smart Remote technology the sound bar is preset to work with most TVs, including Samsung, Sony, LG and Vizio.
Bluetooth Music Streaming
Connect and play music directly from your smartphone, tablet or other compatible device.
Exclusive Full Complement Deep Bass Technology
The MagniFi MAX sound bar and the included 8” ported wireless subwoofer give you a massive boost of core-pounding deep bass impact that takes home theater and music listening to a whole new level.
Movie, Music and Sport Modes
One button preset EQ settings for Movies, Music and Sports (great for news and talks shows, too) optimize the sound bar and subwoofer to ensure you get the clearest dialogue, big surround sound and deep bass for the best audio and home theater experience.
Don’t wake your family or neighbors and stop straining to hear the evening news. With Night Mode, one button lowers the bass and increases Voice Adjust delivering clear dialogue all without raising the master volume.
Polk Patented SDA® Surround Technology
Patented Stereo Dimensional Array (SDA) surround technology creates an expansive soundstage and detailed stereo image, while delivering a natural multi-dimensional sound experience.
Polk VoiceAdjust® Technology
Customize the voice levels to reproduce clear, crisp dialogue and never miss a single word of your favorite movie, TV show or sporting event.
Google Chromecast Built-in
Stream music from your favorite apps over Wi-Fi, connect to your Google Home speaker to create a whole home audio system and use voice commands to control your music.
True 5.1 Surround Sound | Google Chromecast Built-in | Bluetooth Music Streaming