Audio Technica ATH-ANC27 vs Sennheiser OCX 685i

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.

The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes. Show more

Resistance to sweat makes it ideal for use while doing sports.

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

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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Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

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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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This type of device allows you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise. Ideal for plane rides and morning commutes.

Wireless devices allow users more freedom of movement.

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

The device can connect to Wi-Fi.

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