Verdict: KEF LSX II outperforms on sound quality with 24-bit/192kHz support and precise imaging per Stereophile measurements while Sonos Five excels in smart integration and multi-room via its app ecosystem. KEF trails in convenience without voice control but leads in pure audio fidelity. Sonos wins for users already in the Sonos ecosystem.
Winner: KEF LSX II
KEF LSX II: 8.5/10
Sonos Five: 7/10
| KEF LSX II | Sonos Five | |
|---|---|---|
| Amplification | 2x 100W Class D per speaker | Class D |
| Drivers | 4.5 inch woofer + 1 inch tweeter per speaker | 3x mid-woofers + 3x tweeters |
| Connectivity | HDMI ARC, optical, USB, Bluetooth, Wi-Fi | Wi-Fi, Ethernet, Bluetooth |
| Smart Features | None built-in | Alexa, AirPlay 2, Spotify Connect |
Our pick: KEF LSX II. It edges out the alternative on superior stereo imaging and detail retrieval. That said, Sonos Five still wins on seamless multi-room sonos ecosystem — consider it if that single trade matters most for your use.
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