Impedance levels vary (250 Ohms vs 38 ohm), which can affect compatibility and audio output when used with different devices. There is a noticeable difference in weight (425 g vs 240 GM), which may affect comfort during extended use. The frequency response differs (5 Hz - 40000 Hz vs 15Hz - 28KHz), which can influence how well the headphones reproduce lows, mids, and highs. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Beyerdynamic T 90 and Audio Technica BPHS2CA are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Beyerdynamic T 90 and Audio Technica BPHS2CA offer different noise cancellation capabilities (NA vs Sound Isolation), which can impact how effectively they block external noise. From a usability standpoint, both models provide a reliable and premium headphone experience. The driver size differs between the two (NA vs 45 mm), which can influence sound depth, bass response, and overall audio clarity.

Verdict: Choosing between Beyerdynamic T 90 and Audio Technica BPHS2CA depends on whether you value better sound, longer battery life, or enhanced features.