Key Differences

Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Impedance levels vary (24 ohms vs 36 Ohms), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (55 g without cord vs NA), which may affect comfort during extended use. 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. If you're comparing Sony MDR-G45LP and Koss KSC21, both models offer a strong combination of sound performance, comfort, and modern wireless features. 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. Sony MDR-G45LP and Koss KSC21 offer different noise cancellation capabilities (No vs NA), which can impact how effectively they block external noise. The driver size differs between the two (30 mm vs NA), which can influence sound depth, bass response, and overall audio clarity.

Verdict: Both headphones offer strong performance, and the right choice depends on your priorities such as battery life, comfort, and noise cancellation.