Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. Audio Technica ATH-ANC29 and Beyerdynamic DT 240 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. Impedance levels vary (33 ohms vs 34 ohm), which can affect compatibility and audio output when used with different devices. The frequency response differs (20 - 20,000 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 (192 g (including rechargeable battery) vs 196 g), which may affect comfort during extended use. Audio Technica ATH-ANC29 and Beyerdynamic DT 240 PRO offer different noise cancellation capabilities (Yes (Reduces Noise up to 18 dB) vs Ambient), which can impact how effectively they block external noise. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. The driver size differs between the two (40 mm vs NA), which can influence sound depth, bass response, and overall audio clarity.

Verdict: Both models are competitive, and your decision should be based on your usage needs and preferred features.