The frequency response differs (30 - 20,000 Hz vs 20 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. The driver size differs between the two (30 mm vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. There is a noticeable difference in weight (292 g vs 252 Gm), which may affect comfort during extended use. Sony NWZ-WH303 and JBL Quantum 350 Wireless are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Impedance levels vary (30 ohm vs 32 Ohm), which can affect compatibility and audio output when used with different devices. Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. Battery life varies between the two (20 Hours vs 22 Hours), which affects how long you can use them on a single charge. Sony NWZ-WH303 uses Bluetooth 4.2 while JBL Quantum 350 Wireless supports Bluetooth Wireless, which can impact connectivity stability and efficiency.

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