Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Sony MDR-XB450AP and Sony MDR-EX255AP are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. From a usability standpoint, both models provide a reliable and premium headphone experience. Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. The driver size differs between the two (30 mm vs 12 mm), which can influence sound depth, bass response, and overall audio clarity. There is a noticeable difference in weight (165 g vs 3 gm), which may affect comfort during extended use. Impedance levels vary (24 Ohms vs 16 ohm), which can affect compatibility and audio output when used with different devices. The frequency response differs (5 Hz - 22,000 Hz vs 5 Hz - 25,000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel.

Verdict: Choosing between Sony MDR-XB450AP and Sony MDR-EX255AP depends on whether you value better sound, longer battery life, or enhanced features.