Audio-Technica ATH-AD900X vs Master & Dynamic MH40

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience. Show more

Comfortable full-size form with earcups that fully enclose your ears. This model is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors. It offers potential for maximum bass and loudness levels.

With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.

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The device comes with its own special case or pouch, which is useful for safe transportation.

A long cable ensures more freedom of movement.

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The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble. Show more

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The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass. Show more

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The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.

Impedance is the device’s electrical resistance to the current being pushed through it. The lower the impedance, the easier it is to get higher volume and requires less power. Show more

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The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.

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Devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. They also have more bass and clear high notes.

A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.

A headset is one headphone or pair with a built-in microphone. Headsets can be used for apps that require communication i.e. Skype, games with voice chat, mobile phones, etc.

There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.

There is a control panel on the cable, so you can easily operate the device without having to interact with it.