Sony HT-Z9F vs VIZIO SB3651-F6 comparison definitely makes sense. Based on our rating, HT-Z9F has a total rating of 7.2 out of 10 versus 6.8 for SB3651-F6. The competitors' control buttons are different: power, input, Bluetooth, music service, volume down, volume up and power, input, Bluetooth, volume down, volume up, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the Sony HT-Z9F has 3.1 versus 5.1 for the VIZIO SB3651-F6. Competitors do not have a built-in subwoofer. The HT-Z9F has a wireless connection to separate subwoofer, and the SB3651-F6 - wired and wireless. The Sony HT-Z9F got our rating of 7 out of 10, and the VIZIO SB3651-F6 8 for its audio features and specs.
Soundbars do not have AirPlay support. Spotify is available on each of the soundbars.
These models have the ability to connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Sony HT-Z9F has 2/0 HDMI inputs/outputs versus 1/0 of the VIZIO SB3651-F6. The HDMI Audio Return Channel (ARC) feature supports both devices. Both soundbars have a USB connector. For connectivity, each of the soundbars received a rating of 8/10. App control is available for the SB3651-F6. None of the models under consideration have a built-in microphone. Multi-room is only available for the Sony HT-Z9F.
Only the HT-Z9F has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the HT-Z9F. For multichannel surround Sony HT-Z9F got a rating of 8, and VIZIO SB3651-F6 6 out of 10.