Key Differences

The driver size differs between the two (30 mm vs NA), which can influence sound depth, bass response, and overall audio clarity. The frequency response differs (16 - 20,000 Hz vs 50 Hz - 18000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (24 ohms vs 36 Ohms), which can affect compatibility and audio output when used with different devices. Sony MDR-G45LP and Koss KSC21 are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Sony MDR-G45LP and Koss KSC21 offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Overall, both headphones are feature-rich and cater to users looking for a combination of sound quality, comfort, and wireless convenience. There is a noticeable difference in weight (55 g without cord vs NA), which may affect comfort during extended use.

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