Impedance levels vary (16 ohms vs 16 Ohms), which can affect compatibility and audio output when used with different devices. The frequency response differs (17 - 23,000 Hz vs 5 Hz - 24,000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Sennheiser CX 275s and Sony MDR-EX110AP-B offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise. Sennheiser CX 275s and Sony MDR-EX110AP-B are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. The driver size differs between the two (NA 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. There is a noticeable difference in weight (15g vs 3 g), which may affect comfort during extended use.

Verdict: Choosing between Sennheiser CX 275s and Sony MDR-EX110AP-B depends on whether you value better sound, longer battery life, or enhanced features.