Samsung Q990B vs LG SLM4R comparison definitely makes sense. Based on our rating, Q990B has a total rating of 9.8 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 Samsung Q990B has 11.1.4 versus 4.1 for the LG SLM4R. The output power is different and equal to 656 (overall) W for the Q990B versus 420 (overall) W for the SLM4R. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The Samsung Q990B got our rating of 10 out of 10, and the LG SLM4R 7 for its audio features and specs.
Spotify support is available on the Q990B.
Only the Samsung Q990B can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Only the Q990B supports HDMI Audio Return Channel (ARC). Both soundbars have a USB connector. For connectivity, the Q990B received a rating of 10/10 versus 6/10, respectively.
App control is available in every soundbar. A built-in microphone is present only on the Q990B. Soundbars do not have Multi-room support.
Only the Q990B has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the Q990B. For multichannel surround Samsung Q990B got a rating of 10, and LG SLM4R 5 out of 10.