What's the Difference Between a 2.1 and 3.1 Soundbar?
Klipsch Cinema 600 Powered 3.1-channel sound bar/sub system with Bluetooth® at Crutchfield
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Samsung HW-S800B 330W 3.1.2-Channel Soundbar System HW-S800B/ZA
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Amazon.com: Xiaomi Soundbar 3.1ch, 430W Max Power, 3.1ch DTS® Virtual X Sound, One-tap to Play Audio with NFC, Wireless and immersive subwoofer Experience : Electronics
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Klipsch Cinema 600 3.1 Sound Bar System with Wireless Pre-Paired 10" Subwoofer Black 1068777 - Best Buy
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JBL Bar 3.1 | 3.1-Channel 4K Ultra HD Soundbar with Wireless Subwoofer
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onn. 3.1 Atmos Soundbar with Wireless Subwoofer, 37" - Walmart.com