Impedance levels vary (18 ohm vs 64 Ohms), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (12 Gm vs 13 GM), which may affect comfort during extended use. 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. If you're comparing Sennheiser CX 300S and SoundMAGIC E80C, both models offer a strong combination of sound performance, comfort, and modern wireless features. Sennheiser CX 300S and SoundMAGIC E80C offer different noise cancellation capabilities (AMBIENT vs Sound Isolation), which can impact how effectively they block external noise. The driver size differs between the two (NA vs 10 mm), which can influence sound depth, bass response, and overall audio clarity. The frequency response differs (17 Hz - 21000 Hz vs 15 Hz - 22KHz), which can influence how well the headphones reproduce lows, mids, and highs.

Verdict: Choosing between Sennheiser CX 300S and SoundMAGIC E80C depends on whether you value better sound, longer battery life, or enhanced features.