It makes sense comparing VIZIO SB2821-D6 vs Nakamichi Shockwafe Pro 7.1 because they both are able to give some premium features. Based on our rating, SB2821-D6 has a total rating of 4.8 out of 10 versus 7.8 for Shockwafe Pro 7.1. The competitors' control buttons are different: power, input, Bluetooth, volume down, volume up and power, source, demo, volume down, volume up, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the VIZIO SB2821-D6 has 2.1 versus 7.1.4 for the Nakamichi Shockwafe Pro 7.1. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The VIZIO SB2821-D6 got our rating of 6 out of 10, and the Nakamichi Shockwafe Pro 7.1 8 for its audio features and specs.
Soundbars do not have AirPlay support. Spotify support is available on the Shockwafe Pro 7.1.
Both models do not have WI-FI support. Rivals from our review have Bluetooth support. Only the Shockwafe Pro 7.1 supports HDMI Audio Return Channel (ARC). Both soundbars have a USB connector. For connectivity, the SB2821-D6 received a rating of 4/10 versus 8/10, respectively.
Compared soundbars have no app control. None of the models under consideration have a built-in microphone. Soundbars do not have Multi-room support.
Only the Shockwafe Pro 7.1 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the Shockwafe Pro 7.1. For multichannel surround VIZIO SB2821-D6 got a rating of 5, and Nakamichi Shockwafe Pro 7.1 10 out of 10.