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. The frequency response differs (5 Hz - 35000 Hz vs 20Hz - 20KHz), which can influence how well the headphones reproduce lows, mids, and highs. The driver size differs between the two (NA vs 8.5 mm), which can influence sound depth, bass response, and overall audio clarity. Impedance levels vary (32/80/250 Ohms vs 12 ohm), which can affect compatibility and audio output when used with different devices. Beyerdynamic DT 770 PRO and Audio Technica ATH-E40 offer different noise cancellation capabilities (NA vs Sound Isolation), which can impact how effectively they block external noise. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. Beyerdynamic DT 770 PRO and Audio Technica ATH-E40 are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life. There is a noticeable difference in weight (270 g vs 10 GM), which may affect comfort during extended use.

Verdict: Choosing between Beyerdynamic DT 770 PRO and Audio Technica ATH-E40 depends on whether you value better sound, longer battery life, or enhanced features.