The driver size differs between the two (40 mm vs 10 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 (74 g vs 12 GM), which may affect comfort during extended use. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. If you're comparing Sennheiser PX 100-II and SoundMAGIC E11, both models offer a strong combination of sound performance, comfort, and modern wireless features. Sennheiser PX 100-II and SoundMAGIC E11 offer different noise cancellation capabilities (NA vs Sound Isolation), which can impact how effectively they block external noise. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. The frequency response differs (15 Hz - 27000 Hz vs 15 Hz - 22KHz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (32 Ohms vs 42 Ohms), which can affect compatibility and audio output when used with different devices.

Verdict: Choosing between Sennheiser PX 100-II and SoundMAGIC E11 depends on whether you value better sound, longer battery life, or enhanced features.