Impedance levels vary (250 ohm vs 30 ohm), which can affect compatibility and audio output when used with different devices. The frequency response differs (5 - 40 000 Hz vs 5Hz - 40KHz), which can influence how well the headphones reproduce lows, mids, and highs. There is a noticeable difference in weight (388 g vs 376 GM), which may affect comfort during extended use. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. Both headphones are equipped with capable drivers that deliver balanced sound output suitable for music, calls, and entertainment. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Beyerdynamic DT 1770PRO and Beyerdynamic DT 1990 PRO MKII are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life.

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