Polk Audio Signa S3 vs LG SLM4R comparison definitely makes sense. Based on our rating, Signa S3 has a total rating of 6.4 out of 10 versus 5.2 for SLM4R. The competitors' control buttons are different: power, source, demo, volume down, volume up and power, volume down, volume up, function, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the Polk Audio Signa S3 has 2.1 versus 4.1 for the LG SLM4R. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The Polk Audio Signa S3 got our rating of 4 out of 10, and the LG SLM4R 7 for its audio features and specs.
Spotify support is available on the Signa S3.
Only the Polk Audio Signa S3 can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Only the Signa S3 supports HDMI Audio Return Channel (ARC). Both soundbars have a USB connector. For connectivity, the Signa S3 received a rating of 5/10 versus 6/10, respectively.
App control is available in every soundbar. A built-in microphone is present only on the Signa S3. Soundbars do not have Multi-room support.
None of soundbars equipped with Dolby Atmos multichannel audio decoder. The soundbars do not support the surround sound technology DTS:X. For multichannel surround Polk Audio Signa S3 got a rating of 4, and LG SLM4R 5 out of 10.