Impedance levels vary (32 ohm vs 16 ohm), which can affect compatibility and audio output when used with different devices. The driver size differs between the two (40 mm vs 10 mm), which can influence sound depth, bass response, and overall audio clarity. Both models provide a wide frequency range, delivering a balanced audio experience across different types of content. There is a noticeable difference in weight (150 gm vs NA), which may affect comfort during extended use. boAt BassHeads 900 and boAt BassHeads 122 are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Both models feature noise cancellation, helping reduce background noise for a more immersive listening experience. 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. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel.

Verdict: Choosing between boAt BassHeads 900 and boAt BassHeads 122 depends on whether you value better sound, longer battery life, or enhanced features.