The VIZIO SB3821-C6 vs Polk Audio Signa S3 comparison shows that these models have some important differences and common features. The VIZIO SB3821-C6 was rated 4.5, while the Polk Audio Signa S3 has a rating 6.4. The soundbars are equipped with a different number of buttons, power, input, Bluetooth, volume down, volume up for the SB3821-C6 and power, source, demo, volume down, volume up for the Signa S3.
Each of the models under consideration has active amplification type. By the number of channels, the devices do not differ. The built-in subwoofer is not implemented in any of these models. An external subwoofer can be connected to any of the units in this comparison. Rate 5 out of 10 received the VIZIO SB3821-C6 for audio features and specs, but the Polk Audio Signa S3 received 4 out of 10.
The Signa S3 can play audio from Spotify.
Wireless Internet connection is realized only in the Signa S3. Soundbars from this comparison have Bluetooth support. The HDMI Audio Return Channel (ARC) is implemented only in the Signa S3. Connecting devices via USB is possible in both models. We rated the connectivity of the SB3821-C6 at 6 out of 10, while the Signa S3 was rated 5/10.
The manufacturer of the Signa S3 provides a device control application. The Polk Audio Signa S3 equipped with a microphone. The models under consideration cannot become part of a multiroom system.
Dolby Atmos audio decoder support is not implemented in either the SB3821-C6 or Signa S3. Devices from this comparison cannot process surround sound due to lack of DTS:X. The SB3821-C6 was rated 5/10, while the Signa S3 received a mark of 4/10 for multichannel surround.