Grab Vizio's SmartCast 38-inch 3.1-channel sound bar on sale for $128

The Vizio SmartCast SB3831-D 38-inch 3.1-channel sound bar is down to $128 at Walmart. This same sound bar used to sell closer to $160 or as high as $200 at other retailers, but it is currently sold out in most places.

Stream your favorite tunes using the built-in Chromecast and turn your phone into a remote using Vizio's app.

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The sound bar has three channels and a wireless subwoofer that help produce up to 101 dB of room-filling clear audio. It also has Chromecast built-in, which lets you stream your favorite tunes from your smartphone. If you download Vizio's SmartCast app, you can essentially turn your phone or tablet into a touchscreen remote. Plus, if you have other SmartCast devices you can control them all at once.