VIZIO SB3621n, 2.1-Channel Sound Bar System

VIZIO SB3621n, 2.1-Channel Sound Bar System | SB3621n-G8

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Sound Bars

From America’s #1 Sound Bar Brand.

Featuring DTS Virtual:X
Incredibly Immersive

DTS® Virtual:X™ enhances any content with room-filling, floor-to-ceiling virtualized 3D sound.

Booming Bass

Select either standard or slim subwoofers for impressively powerful bass, in any space.

Optimized for 4K HDR with Dolby Audio™

Bring out the best audio performance from your 4K HDR content with Dolby Audio™ when connected through HDMI.

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Hear the Difference

Take your TV sound to the next level with America's #1 Sound Bar company.

Powerful Speakers

Models ranging from 2 to 6 total speakers all create brilliant clarity for everything you listen to.

Loud and Clear

Up to 101dB sound pressure level and 50Hz – 20kHz frequency range deliver dynamic and accurate sound.

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HDMI Connection

Select models have HDMI, providing the highest-quality audio available and allows you to control sound bar with your TV remote.

Everything You Need in the Box

All audio cables included, even an HDMI cable for models with HDMI ports.

Stream Your Favorite Tunes

Pair with any device via Bluetooth.


What the Tech Experts Say


What makes VIZIO, VIZIO?

Affordable, Proven Technology

VIZIO products integrate the best proven technologies to deliver exceptional performance at a great price.  Experts agree.

That Works With Everything

Your VIZIO should work with you and your home.  That’s why VIZIO supports the most popular video and audio formats, as well as Alexa, Google Assistant and Siri.

And Gets Better Over Time

All VIZIO SmartCast OS TV’s are automatically updated.  This means that your tv will receive new features for years to come.


Shop a Model Today

WARNING: This product can expose you to chemicals, including Lead which is known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information, go to