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. There is a noticeable difference in weight (332 g vs 235 GM), which may affect comfort during extended use. Beyerdynamic MMX 300 and Audio Technica ATH-AD500X offer different noise cancellation capabilities (NA vs Sound Isolation), which can impact how effectively they block external noise. Impedance levels vary (32 ohm vs 48 ohm), which can affect compatibility and audio output when used with different devices. Beyerdynamic MMX 300 and Audio Technica ATH-AD500X are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. The driver size differs between the two (NA vs 53 mm), which can influence sound depth, bass response, and overall audio clarity. The frequency response differs (5 - 35 000 Hz vs 5Hz - 25KHz), which can influence how well the headphones reproduce lows, mids, and highs.

Verdict: Choosing between Beyerdynamic MMX 300 and Audio Technica ATH-AD500X depends on whether you value better sound, longer battery life, or enhanced features.