Impedance levels vary (NA vs 16 Ohm), which can affect compatibility and audio output when used with different devices. The driver size differs between the two (6 mm vs 8.2 mm), which can influence sound depth, bass response, and overall audio clarity. There is a noticeable difference in weight (44.4 gm vs 52.6‬ Gm), which may affect comfort during extended use. LG HBS-FN6 Black and KEF Mu3 offer different noise cancellation capabilities (NA vs Active NC), which can impact how effectively they block external noise. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. The frequency response differs (NA vs 20 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. If you're comparing LG HBS-FN6 Black and KEF Mu3, both models offer a strong combination of sound performance, comfort, and modern wireless features. Battery life varies between the two (15 Hours vs 9 / 15 Hours), which affects how long you can use them on a single charge. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices.

Verdict: Choosing between LG HBS-FN6 Black and KEF Mu3 depends on whether you value better sound, longer battery life, or enhanced features.