LG SC9S vs LG SLM4R comparison definitely makes sense. Based on our rating, SC9S has a total rating of 6.4 out of 10 versus 5.2 for SLM4R.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the LG SC9S has 2.1 versus 4.1 for the LG SLM4R. The output power is different and equal to 310 (overall) W for the SC9S versus 420 (overall) W for the SLM4R. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The LG SC9S got our rating of 6 out of 10, and the LG SLM4R 7 for its audio features and specs.
Spotify support is available on the SC9S.
Only the LG SC9S can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Only the SC9S supports HDMI Audio Return Channel (ARC). Both soundbars have a USB connector. For connectivity, the SC9S received a rating of 7/10 versus 6/10, respectively.
App control is available in every soundbar. None of the models under consideration have a built-in microphone. Soundbars do not have Multi-room support.
Only the SC9S has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SC9S. For multichannel surround, each of the opponents received 5 points out of 10.