Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. There is a noticeable difference in weight (NA vs 131 g), which may affect comfort during extended use. Both headphones are equipped with capable drivers that deliver balanced sound output suitable for music, calls, and entertainment. Koss SB49 and Beyerdynamic DTX 350M are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. The frequency response differs (18 Hz -20000 Hz vs 22 - 18,000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. From a usability standpoint, both models provide a reliable and premium headphone experience. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Impedance levels vary (100 Ohms vs 32 ohm), which can affect compatibility and audio output when used with different devices.

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