Both headphones are equipped with capable drivers that deliver balanced sound output suitable for music, calls, and entertainment. From a usability standpoint, both models provide a reliable and premium headphone experience. There is a noticeable difference in weight (388 g vs 376 GM), which may affect comfort during extended use. Beyerdynamic DT 1770 PRO and Beyerdynamic DT 1990 PRO MKII are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Impedance levels vary (250 Ohms vs 30 ohm), 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. Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. The frequency response differs (5 Hz - 40000 Hz vs 5Hz - 40KHz), 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.

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