Nakamichi Shockwafe Ultra 9.2 vs Polk Audio SIGNA S2 comparison definitely makes sense. Based on our rating, Shockwafe Ultra 9.2 has a total rating of 8.2 out of 10 versus 5 for SIGNA S2. The competitors' control buttons are different: power, source, demo, volume down, volume up and power, volume down, volume up, source, Bluetooth, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the Nakamichi Shockwafe Ultra 9.2 has 9.2.4 versus 2.1 for the Polk Audio SIGNA S2. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The Nakamichi Shockwafe Ultra 9.2 got our rating of 10 out of 10, and the Polk Audio SIGNA S2 6 for its audio features and specs. Spotify support is available on the Shockwafe Ultra 9.2.
Both models do not have WI-FI support. Rivals from our review have Bluetooth support. The Nakamichi Shockwafe Ultra 9.2 has 3/1 HDMI inputs/outputs versus 1/0 of the Polk Audio SIGNA S2. The HDMI Audio Return Channel (ARC) feature supports both devices. For connectivity, the Shockwafe Ultra 9.2 received a rating of 8/10 versus 6/10, 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 Ultra 9.2 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the Shockwafe Ultra 9.2. For multichannel surround Nakamichi Shockwafe Ultra 9.2 got a rating of 10, and Polk Audio SIGNA S2 4 out of 10.