Beyerdynamic T 51 p vs Sol Republic Tracks Air

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.

Best

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

Allows you to change ear pads without buying new ones.

This device comfortably rests on top of your outer ears. As it doesn't block out everything from the outside world, it's preferred in places like office environments and recommended for outdoor activities.

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

The battery can be recharged and used over again.

An indicator shows you when the device has low battery.

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.

Device supports fast Bluetooth pairing using NFC so it can communicate with other devices over Bluetooth. You can fastly pair devices without entering a code by simply holding one device next to the device with which it is to be paired.

The device can connect to Wi-Fi.

For example

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.