Sennheiser MM 30i vs Sony MDR-EX31BN – Full Comparison & Verdict (2026)

- Smart in-line remote control with microphone â€“ change the volume, control your music-playing options, answer or end calls and activate Voice Control â€“ all from a sleek built-in unit - Feel the beat â€“ thanks to bass-driven Sennheiser sound - Effective noise blocking â€“ ear-canal design for effective passive attenuation of ambient noise - Comfortable custom fit â€“ 3 sizes of ear sleeves (S/M/L) supplied - Made for the latest generations of iPod, iPhone and iPad* - 2-year warranty

- Wireless Stereo Dynamic In-Ear Headset - 13.5mm high sensitivity driver - Hybrid silicone rubber earbuds (S,M,L) supplied fitting and long-term wearing comfort - Bluetooth Power Class2, Noise Cancelling set Bluetooth - Output :- Bluetooth power class2 - Maximum Communication Range :- Line of sight approx. 30ft (10m) - Frequency Band :- 2.4GHz band (2.4000GHz-2.4835GHz) Microphone - Unit/Type :- Electret Condenser - Directivity :- Omnidirectional Microphone - Frequency Range :- 100Hz - 4,000Hz General - Type :- Closed, dynamic - Power Source / Battery Type :- Built-in Li-ion Rechargeable Battery - Battery Life :- (NC ON) Approx. 9.0 Hours, (NC OFF) Approx. 10.5 Hours - Battery Charging Time :- Approx. 2.5 Hours

The frequency response differs (20 - 20,000Hz vs 17 Hz - 20000 Hz), which can influence how well the headphones reproduce lows, mids, and highs. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. There is a noticeable difference in weight (Approx 34g vs 32 g), which may affect comfort during extended use. Sony MDR-EX31BN and Sennheiser MM 30i offer different noise cancellation capabilities (Yes vs NA), which can impact how effectively they block external noise. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Impedance levels vary (16 ohm (1KHz) vs 16 Ohms), which can affect compatibility and audio output when used with different devices. Sony MDR-EX31BN and Sennheiser MM 30i are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life. The driver size differs between the two (13.5mm vs NA), which can influence sound depth, bass response, and overall audio clarity.

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 vs NA
Driver Size: 13.5mm vs NA
Weight: Approx 34g vs 32 g
Impedance: 16 ohm (1KHz) Vs 16 Ohms

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Top Differences