Year-End SaleEnds 1/1/26. Limited quantities. No rainchecks.

Main Content
product image

VIZIO - 2.1-Channel M-Series Soundbar with Built-in Subwoofers and DTS Virtual:X - Dark Charcoal

Model: M21D-H8R
SKU: 6416783
This item is no longer available in new condition. See similar items below
  • Key Specs
    • Wireless Connectivity: Bluetooth (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
    • Wall Mountable: true (The product is able to be secured to a wall. Some products are designed ready to mount, while others may require additional hardware/accessories for installation.)
    • Works With: Amazon Alexa, Google Assistant, Siri (Compatible with or able to be connected to other smart devices or applications.)
  • General
    • Product Name: 2.1-Channel M-Series Soundbar with Built-in Subwoofers and DTS Virtual:X
    • Brand: VIZIO
    • Model Number: M21D-H8R
    • Color: Dark Charcoal
  • Audio
    • Number of Channels: 2.1 (The number of discrete channels of sound output. This can be a single number or multiple numbers separated by decimal(s). The first number is the primary, horizontally directed audio channels. The number after the first decimal, if applicable, is the number of subwoofer outputs or channels. The number after the second decimal, if applicable, is the number of height or atmospheric channels designed to immerse the listener by producing overhead sound effects.)
    • Surround Sound Supported: Dolby Digital, Dolby Digital Plus, DTS (Surround sound systems use multiple audio channels and speakers to create an immersive sound experience for the listener. There are also various proprietary technologies that imitate this kind of sound via a device's built-in speakers or soundbar.)
  • Connectivity
    • Wireless Connectivity: Bluetooth (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
    • Audio Only Inputs: 1 x Optical digital audio, 1 x USB-A, 1 x 3.5mm audio
    • Number of HDMI Inputs (Total): 2
    • Audio/Video Inputs: 1 x HDMI 2.0 (The number and type of HDMI inputs the product has.)
    • Number of USB Inputs: 1
    • Number of HDMI Outputs (Total): 1
  • Features
    • Wall Mountable: true (The product is able to be secured to a wall. Some products are designed ready to mount, while others may require additional hardware/accessories for installation.)
  • Speaker
    • Subwoofer: Built-in
  • Dimensions
    • Product Height: 2.13 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
    • Product Width: 36 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Depth: 5.5 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
    • Product Weight: 5.56 pounds (The out of box weight of the item.)
  • Included
    • Remote Control Included: true
    • Cable(s) Included: HDMI, Optical digital audio
  • Certifications Listings & Approvals
    • ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
  • Warranty
    • Manufacturer's Warranty - Parts: 1 year
    • Manufacturer's Warranty - Labor: 1 year
  • Compatibility
    • Works With: Amazon Alexa, Google Assistant, Siri (Compatible with or able to be connected to other smart devices or applications.)
  • Other
    • UPC: 845226019074

The redesigned M-Series™ All-in-One 2.1 Home Theater Sound Bar from VIZIO combines supreme convenience with powerful performance. Thrilling sound is achieved with separate tweeters and woofers, plus built-in dual 3” subwoofers, all in a striking angular shape with a dark charcoal finish. There are no additional speakers or cables needed. HDMI connectivity offers the highest-quality audio with quick and easy setup, allowing you to control the sound bar with your TV remote. (HDMI and all audio cables included.) DTS® Virtual:X™ creates an immersive experience with room-filling, floor-to-ceiling, virtualized 3D sound that transforms music into a live concert, or a sci-fi film into an intergalactic adventure. The M-Series™ All-in-One features the all-new Voice Assistant Input that gives you the convenience of a voice assistant you are already accustomed to (sold separately) and lets you operate it right through the sound bar for upgraded audio. You can also wirelessly connect your phone or any compatible Bluetooth device for high-quality music streaming. The VIZIO M-Series All-in-One Sound Bar is a hassle-free, plug-and-play audio solution that does the job of many speakers, turning your living room into a captivating home theater.

  • New modern design: Angular all-in-one design packed with performance and slides beneath your TV for a clean look.
  • 6 Precisely Designed Speakers: 2-way speaker design with separate tweeters and woofers create richer, clearer sound.
  • Optimized for 4K HDR content: Bring out the best audio performance from your 4K HDR content with Dolby Audio™ when connected through HDMI.
  • Loud and Clear: The 98dB sound pressure level and 50Hz – 20kHz frequency range deliver dynamic and accurate Sound.
  • DTS Virtual:X: Enhances any content with room-filling, floor-to-ceiling virtualized 3D sound.
  • Built-In Subwoofers: Dual 3” subwoofers built into the sound bar create deep bass without the need of a separate subwoofer or cables.
  • Voice Assistant Input: Use our voice to control your Alexa, Siri, or Google Assistant devices through the sound bar with a dedicated 3.5 Aux or Persistent Bluetooth connection.
  • Dialogue EQ: Enhancement setting for calibrated, crisp-clear dialogue.
  • HDMI Connection: Uses the highest-quality audio available and allows you to control sound bar with your TV remote.
  • 4K Dolby Vision® HDR Pass Through: 2 HDMI ports allow you to connect a device to your TV through the sound bar at the highest video quality possible with 4K Dolby Vision® HDR.
  • Bluetooth Streaming: Stream music wirelessly from your phone or other compatible Bluetooth devices.
  • All-New Backlit Display Remote: Full-featured remote with comfort grip and easy to navigate – even in the dark.
  • Easy Setup: HDMI and all audio cables included, along with voice feedback make setup simple.
Whats Included
  • VIZIO M-Series 2.1 Channel All-in-One Sound Bar System

Q: What is the difference between the M21d-H8 and the M21d-H8R?

A: To clarify the answer by the expert, the M21d-H8R includes the "Display Remote" with a LED Display that shows selected settings, but the keys themselves are not back lit.

Q: I saw this wall mounted on the Vizio website. Is that the intended deployment or can you place it flatly on a tv stand and still have good performance?

A: It has speakers facing forwards and upwards as well as the downward facing subwoofers. I can confirm that it does sound good laying flat as well as wall mounted, but just make sure if it's wall mounted that the side labeled up is pointing up and if it's laying flat that the long side that has the opening is facing towards the tv / away from the viewer.

Q: Will it keep commercials and show at same volume level? My brother wears hearing aids and commercials blow him away.

A: There is a DTS TruVolume setting that is supposed to do this. From the manual: Press the TVOL button to enable/disable TruVolume. When ON, TruVolume provides a consistent and comfortable volume level for a more enjoyable listening experience.

Q: Because of the bracket design, when wall-mounted the speaker orientation is flipped (left side is now right side and right is left) compared to sitting flat on base. Does the sound bar somehow know this and automatically swap output channels?

A: Answering my own question here. After seeing no on-line complaints about this I decided to take a chance and try it out by drilling holes to wall mount the unit, and the answer is "YES!" . The sound bar somehow recognizes it is wall mounted and swaps the audio channels to keep right and left channels on the correct sides. Very smart design.

Q: Do I need to purchase any other HDMI connections to make this soundbar work?

A: Hello Tulsaok, The required HDMI and other cables are included in the box.

Q: What are the dimensions.

A: Hello Kay, Below are the product dimensions: Product Height 2.13 inches Product Width 36 inches Product Depth 5.5 inches

Q: Can I connect this 2.1 sound bar to my new VIZIO - 40" Class D-Series LED Full HD SmartCast TV (D40F-G9) TV via optical cable and does the sound bar come with the optical cable? Thanks.

A: Yes you can use optical. This sound bar is the best I ever had. I got it because I purchased my first smart tv. The bar comes with every cable you’ll need to hook it up in different ways. I have mine hooked up using HMDI ARC which is the best in my opinion. If you purchase this sound bar you won’t have to buy any cables whatsoever.

Q: Would I be able to use this with a desktop PC too? Or just a TV?

A: You can connect it to a PC if you have the right connections on it. It accepts HDMI In, Optical audio, Or AUX (headphone jack cable).