Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Impedance levels vary (300 ohms (when noise cancelling function is used) vs 250 Ohms), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (210 g (Inclusive of Battery and Cable) vs 250 g), which may affect comfort during extended use. The frequency response differs (10 - 25,000Hz vs 5 Hz - 35000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Audio Technica ATH-ANC7b and Beyerdynamic DT 990 PRO offer different noise cancellation capabilities (Yes (Reduces Noise up to 20 dB) vs NA), which can impact how effectively they block external noise. From a usability standpoint, both models provide a reliable and premium headphone experience. Audio Technica ATH-ANC7b and Beyerdynamic DT 990 PRO are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. 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.