Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. The frequency response differs (5 Hz - 35000 Hz vs 10 Hz - 25000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Beyerdynamic Custom One Pro Plus and Koss PRO4AAT 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. Both headphones are equipped with capable drivers that deliver balanced sound output suitable for music, calls, and entertainment. Impedance levels vary (16 Ohms vs 250 Ohms), which can affect compatibility and audio output when used with different devices. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. There is a noticeable difference in weight (290 g vs NA), which may affect comfort during extended use.

Verdict: Choosing between Beyerdynamic Custom One Pro Plus and Koss PRO4AAT depends on whether you value better sound, longer battery life, or enhanced features.