The driver size differs between the two (40 mm vs 30 mm), which can influence sound depth, bass response, and overall audio clarity. The frequency response differs (20 - 20,000 Hz vs 5 Hz - 22,000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. From a usability standpoint, both models provide a reliable and premium headphone experience. Audio Technica ATH-ANC29 and Sony XB450BV offer different noise cancellation capabilities (Yes (Reduces Noise up to 18 dB) vs No), which can impact how effectively they block external noise. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. There is a noticeable difference in weight (192 g (including rechargeable battery) vs 273 gm), which may affect comfort during extended use. If you're comparing Audio Technica ATH-ANC29 and Sony XB450BV, both models offer a strong combination of sound performance, comfort, and modern wireless features. Impedance levels vary (33 ohms vs 40 ohm), which can affect compatibility and audio output when used with different devices. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices.

Verdict: Both headphones offer strong performance, and the right choice depends on your priorities such as battery life, comfort, and noise cancellation.