Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. The frequency response differs (5 - 35 000 Hz vs 5 - 35.000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. There is a noticeable difference in weight (270 g vs 250 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. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. From a usability standpoint, both models provide a reliable and premium headphone experience. Beyerdynamic DT 770PRO and Beyerdynamic DT 990PRO are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life.

Verdict: Choosing between Beyerdynamic DT 770PRO and Beyerdynamic DT 990PRO depends on whether you value better sound, longer battery life, or enhanced features.