Sennheiser CX 180 and Aiwa ESTM-101 offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise. If you're comparing Sennheiser CX 180 and Aiwa ESTM-101, both models offer a strong combination of sound performance, comfort, and modern wireless features. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Impedance levels vary (16 ohms vs NA), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (5g vs 20 Gm), which may affect comfort during extended use. From a usability standpoint, both models provide a reliable and premium headphone experience. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. The frequency response differs (20 - 20,000 Hz vs 20 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. The driver size differs between the two (NA vs 10 mm), which can influence sound depth, bass response, and overall audio clarity.

Verdict: Choosing between Sennheiser CX 180 and Aiwa ESTM-101 depends on whether you value better sound, longer battery life, or enhanced features.