The driver size differs between the two (NA vs 45 mm), which can influence sound depth, bass response, and overall audio clarity. There is a noticeable difference in weight (250 g vs 227 GM), 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. Impedance levels vary (250 Ohms vs 45 ohm), which can affect compatibility and audio output when used with different devices. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. The frequency response differs (5 Hz - 35000 Hz vs 10Hz - 35KHz), which can influence how well the headphones reproduce lows, mids, and highs. Beyerdynamic DT 990 PRO and Audio Technica ATH-GDL3 offer different noise cancellation capabilities (NA vs Sound Isolation), which can impact how effectively they block external noise. Beyerdynamic DT 990 PRO and Audio Technica ATH-GDL3 are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel.

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