Key Differences

There is a noticeable difference in weight (165 g (without cable) vs 3 gm), which may affect comfort during extended use. If you're comparing Sennheiser HD-201 and Sony MDR-EX155AP, both models offer a strong combination of sound performance, comfort, and modern wireless features. The driver size differs between the two (40 mm vs 9 mm), which can influence sound depth, bass response, and overall audio clarity. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. From a usability standpoint, both models provide a reliable and premium headphone experience. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Impedance levels vary (24 ohms vs 16 ohm), which can affect compatibility and audio output when used with different devices. The frequency response differs (21 - 18000 Hz vs 5 Hz - 24,000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Sennheiser HD-201 and Sony MDR-EX155AP offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise.

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