Impedance levels vary (250 Ohms vs 80 ohm), which can affect compatibility and audio output when used with different devices. Both headphones are equipped with capable drivers that deliver balanced sound output suitable for music, calls, and entertainment. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. If you're comparing Beyerdynamic T 90 and Beyerdynamic DT 790, both models offer a strong combination of sound performance, comfort, and modern wireless features. 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. The frequency response differs (5 Hz - 40000 Hz vs 5 - 30.000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. There is a noticeable difference in weight (425 g vs 470 g), which may affect comfort during extended use.

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