I had a chance to test and compare two models: Vizio M21d-H8 vs Klipsch Cinema 600 and this review should help people who are looking for a good soundbar. The Vizio M21d-H8 was rated 5, while the Klipsch Cinema 600 has a rating 4.8.
Each of the models under consideration has active amplification type. A noticeable difference is the number of channels that M21d-H8 has 2.1 and Cinema 600 has 3.1. A built-in subwoofer is available only in the Vizio M21d-H8. Rate 5 out of 10 received the Vizio M21d-H8 for audio features and specs, but the Klipsch Cinema 600 received 6 out of 10.
Soundbars do not have AirPlay support. The units in this comparison do not support Spotify.
Both models do not have a wireless Wi-Fi interface. Soundbars from this comparison have Bluetooth support. There are 1/1 HDMI inputs/outputs in the Vizio M21d-H8 versus 1/0 HDMIs in the Klipsch Cinema 600. As in the M21d-H8, so in the Cinema 600 there is the HDMI Audio Return Channel (ARC). We rated the connectivity of the M21d-H8 at 6 out of 10, while the Cinema 600 was rated 8/10. None of these soundbars can be controlled using the app. The Vizio M21d-H8 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 M21d-H8 or Cinema 600. Devices from this comparison cannot process surround sound due to lack of DTS:X. The M21d-H8 was rated 5/10, while the Cinema 600 received a mark of 6/10 for multichannel surround.