Both headphones are equipped with capable drivers that deliver balanced sound output suitable for music, calls, and entertainment. 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. Beyerdynamic DT 1770 PRO 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. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. There is a noticeable difference in weight (388 g vs 376 GM), which may affect comfort during extended use. Impedance levels vary (250 Ohms vs 30 ohm), which can affect compatibility and audio output when used with different devices. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience.

Verdict: Choosing between Beyerdynamic DT 1770 PRO and Beyerdynamic DT 1990 PRO MKII depends on whether you value better sound, longer battery life, or enhanced features.