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. The frequency response differs (10 - 25,000Hz vs 15Hz - 24KHz), which can influence how well the headphones reproduce lows, mids, and highs. Audio Technica ATH-ANC9 and Audio Technica ATH-M40x offer different noise cancellation capabilities (Yes (Reduces Noise up to 30 dB) vs Sound Isolation), which can impact how effectively they block external noise. Impedance levels vary (100 ohms (when noise cancelling function is used) vs 35 ohm), which can affect compatibility and audio output when used with different devices. Audio Technica ATH-ANC9 and Audio Technica ATH-M40x are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. There is a noticeable difference in weight (220 g (Inclusive of Battery and Cable) vs 240 GM), which may affect comfort during extended use. From a usability standpoint, both models provide a reliable and premium headphone experience. Both headphones are equipped with capable drivers that deliver balanced sound output suitable for music, calls, and entertainment.
Verdict: Both headphones offer strong performance, and the right choice depends on your priorities such as battery life, comfort, and noise cancellation.
Top Differences
- Noise Cancelling: Yes (Reduces Noise up to 30 dB) vs Sound Isolation
- Weight: 220 g (Inclusive of Battery and Cable) vs 240 GM
- Impedance: 100 ohms (when noise cancelling function is used) Vs 35 ohm