There is a noticeable difference in weight (NA vs 270 GM), which may affect comfort during extended use. The frequency response differs (15 Hz - 22000 Hz vs 10Hz - 25KHz), which can influence how well the headphones reproduce lows, mids, and highs. The driver size differs between the two (NA vs 53 mm), which can influence sound depth, bass response, and overall audio clarity. Koss PRO3AA and Audio Technica ATH-AVC500 offer different noise cancellation capabilities (NA vs Sound Isolation), which can impact how effectively they block external noise. If you're comparing Koss PRO3AA and Audio Technica ATH-AVC500, both models offer a strong combination of sound performance, comfort, and modern wireless features. 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. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Impedance levels vary (60 Ohms vs 40 ohm), which can affect compatibility and audio output when used with different devices.

Verdict: Choosing between Koss PRO3AA and Audio Technica ATH-AVC500 depends on whether you value better sound, longer battery life, or enhanced features.