The driver size differs between the two (NA vs 50 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. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Koss PRO-4AA and SHURE SRH750DJ are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. The frequency response differs (10 Hz - 25000 Hz vs 5 Hz - 30000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (250 Ohms vs 32 ohm), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (NA vs 291 Gm), which may affect comfort during extended use. Koss PRO-4AA and SHURE SRH750DJ offer different noise cancellation capabilities (NA vs CVC), 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.