Sennheiser MM 450-X vs Audio Technica ATH-M50xBT2 – Detailed Specs Comparison (2026)

- NoiseGard 2.0â„¢** â€“ advanced Sennheiser active noise cancellation lets you enjoy music in peace - TalkThrough external microphone â€“ so you can talk to fellow passengers without removing the headset - Wireless freedom â€“ BluetoothÂ® 2.1 guarantees hands-free convenience without wires, and the advanced A2DP profile for Stereo BluetoothÂ® delivers optimized hi-fi stereo sound - CD-quality audio â€“ the headset can connect wirelessly to any BluetoothÂ® apt-XÂ®-enabled device - Direct cable option â€“ for use on airplanes with the supplied airline adapter - Easy headset controls â€“ in one intuitive cluster on the ear cup - Sennheiser sound quality â€“ hi-fi headphone drivers ensure superior dynamic range, detail and excellent bass - Wearing comfort â€“ padded ear-cushions provide an excellent soft fit, even on long trips - Foldable â€“ folds into a compact bundle for travel and storage - Flexible â€“ replace the battery with a spare on long trips, or recharge it via the US

Compatible with high-quality LDAC and AAC codecs. Microphone can be muted with a simple press of a button. Over-ear design for excellent sound isolation in loud environments. Dual mics and beamforming technology ensure crystal-clear call quality. give you access to voice assistant ( Amazon Alexa Built-in, Google Assistant, Siri ). Multipoint pairing function allows you to stay connected to two Bluetooth devices at once. Google Fast Pair lets you quickly pair headphones with an Android smartphone or other device. Low latency mode improves synchronicity between audio and video for smooth streaming and gaming. Wireless, on-the-go design delivers the same critically acclaimed sonic performance as the original ATH-M50x professional studio headphones. Proprietary 45 mm large-aperture drivers and dedicated amplifier deliver exceptional clarity throughout an extended frequency range, with deep, accurate bass response.

The driver size differs between the two (NA vs 45 mm), which can influence sound depth, bass response, and overall audio clarity. From a usability standpoint, both models provide a reliable and premium headphone experience. Impedance levels vary (32 Ohms vs 38 ohm), which can affect compatibility and audio output when used with different devices. The frequency response differs (15 Hz - 22000 Hz vs 15Hz - 28KHz), which can influence how well the headphones reproduce lows, mids, and highs. Sennheiser MM 450-X uses Bluetooth BluetoothÂ® 2.1 + ED while Audio Technica ATH-M50xBT2 supports Bluetooth 5.0, which can impact connectivity stability and efficiency. Sennheiser MM 450-X and Audio Technica ATH-M50xBT2 offer different noise cancellation capabilities (Yes vs Sound Isolation), which can impact how effectively they block external noise. There is a noticeable difference in weight (105 g vs 307 GM), which may affect comfort during extended use. Sennheiser MM 450-X and Audio Technica ATH-M50xBT2 are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. Battery life varies between the two (10 Hrs with Noiseguard Talktime, 20 Hrs without Noiseguard vs 50 Hours), which affects how long you can use them on a single charge.

Verdict: Choosing between Sennheiser MM 450-X and Audio Technica ATH-M50xBT2 depends on whether you value better sound, longer battery life, or enhanced features.

Top Differences

Battery Life: 10 Hrs with Noiseguard Talktime, 20 Hrs without Noiseguard vs 50 Hours
Noise Cancelling: Yes vs Sound Isolation
Driver Size: NA vs 45 mm
Bluetooth: BluetoothÂ® 2.1 + ED vs 5.0
Weight: 105 g vs 307 GM

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Top Differences