Key Differences

Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. If you're comparing Sennheiser PC 31-II and Koss UR22i, both models offer a strong combination of sound performance, comfort, and modern wireless features. 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. Impedance levels vary (32 Ohms vs 34 Ohms), which can affect compatibility and audio output when used with different devices. The frequency response differs (40 Hz - 18000 Hz vs 20 Hz - 20000 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 (90 g vs NA), which may affect comfort during extended use.

Verdict: Choosing between Sennheiser PC 31-II and Koss UR22i depends on whether you value better sound, longer battery life, or enhanced features.