The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.
Sony MDR-Z1R: 120000Hz
2. lowest frequency
The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
Sony MH1CBLK: 1Hz
3. has sound isolation/passive noise reduction
The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.
45% have it
4. no battery needed
This device works without batteries. It weighs less and you don't have to worry about recharging or replacing the battery.
69% have it
5. can be folded
Folding devices are good for transporting as they take up less space in your bag.
31% have it
6. can be used as a headset
A headset is one headphone or pair with a built-in microphone. Headsets can be used for applications which require communication i.e. Skype, games with voice chat, mobile phones etc.
44% have it
7. has stereo speakers
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
76% have it
8. Can be used wirelessly
Wireless devices allow users more freedom of movement.
23% have it
9. has an over-the-ear form
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.
40% have it
10. control panel placed on a device
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.
18% have it
11. has included ear pads
Allows you to change ear pads without buying new ones.
43% have it
12. has a straight plug
A straight plug is better when the jack is on the top or bottom of your player.
50% have it
13. has a 3.5mm male connector
A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.