The driver size differs between the two (50 mm vs NA), which can influence sound depth, bass response, and overall audio clarity. JBL Quantum ONE and Beyerdynamic DT 297 PV MK II are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life. 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 (20 Hz - 40000 Hz vs 10 - 30.000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Impedance levels vary (32 ohm vs 250 ohm), which can affect compatibility and audio output when used with different devices. JBL Quantum ONE and Beyerdynamic DT 297 PV MK II offer different noise cancellation capabilities (Active vs NA), which can impact how effectively they block external noise. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. There is a noticeable difference in weight (369 gm vs 240 g), which may affect comfort during extended use.

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