If you have already decided that you want to buy a new soundbar, but still don’t know what exactly you want, the Vizio V21-H8 vs Polk Audio Signa S4 comparison is here to offer you two decent solutions. The Vizio V21-H8 was rated 5.5, while the Polk Audio Signa S4 has a rating 7.8. The soundbars are equipped with a different number of buttons, power, volume down, volume up, source, Bluetooth for the V21-H8 and power, source, demo, volume down, volume up for the Signa S4.
Each of the models under consideration has active amplification type. A noticeable difference is the number of channels that V21-H8 has 2.1 and Signa S4 has 3.1.2. The built-in subwoofer is not implemented in any of these models. An external subwoofer connects to the V21-H8 via wired and wireless, but Signa S4 has wireless connection type. Rate 6 out of 10 received the Vizio V21-H8 for audio features and specs, but the Polk Audio Signa S4 received 5 out of 10.
The Signa S4 can play audio from Spotify.
Wireless Internet connection is realized only in the Signa S4. Soundbars from this comparison have Bluetooth support. 0/1 HDMI inputs/outputs are in each of soundbars. As in the V21-H8, so in the Signa S4 there is the HDMI Audio Return Channel (ARC). Connecting devices via USB is possible in both models. The connectivity of each of the models was estimated at 6/10. Each of the soundbars can be controlled using the application. The soundbars in this review are equipped with a microphone. The models under consideration cannot become part of a multiroom system.
Dolby Atmos audio decoder is onboard the Signa S4. Devices from this comparison cannot process surround sound due to lack of DTS:X. The V21-H8 was rated 5/10, while the Signa S4 received a mark of 9/10 for multichannel surround.