Impedance levels vary (30 ohm vs 10 Ohm), which can affect compatibility and audio output when used with different devices. If you're comparing Sony NWZ-WH303-B and Soundcore Liberty 4 NC, both models offer a strong combination of sound performance, comfort, and modern wireless features. There is a noticeable difference in weight (292 g vs 209 Gm), which may affect comfort during extended use. The driver size differs between the two (30 mm vs 11 mm), which can influence sound depth, bass response, and overall audio clarity. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. The frequency response differs (30 - 20,000 Hz vs 20 Hz - 40000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Sony NWZ-WH303-B and Soundcore Liberty 4 NC offer different noise cancellation capabilities (NA vs Adaptive NC), which can impact how effectively they block external noise.

Verdict: Both headphones offer strong performance, and the right choice depends on your priorities such as battery life, comfort, and noise cancellation.