There is a noticeable difference in weight (240 g vs 314 GM), which may affect comfort during extended use. Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. Beyerdynamic DT 290 MK II and Beyerdynamic MMX 300 PRO are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. The frequency response differs (10 - 30.000 Hz vs 5Hz - 40KHz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (250 ohm vs 48 ohm), which can affect compatibility and audio output when used with different devices. The driver size differs between the two (NA vs 45 mm), which can influence sound depth, bass response, and overall audio clarity.

Verdict: Choosing between Beyerdynamic DT 290 MK II and Beyerdynamic MMX 300 PRO depends on whether you value better sound, longer battery life, or enhanced features.