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
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.
Flips Solo 2 Social: 4Ohms
4. sound pressure level
Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
AKG K553 Pro: 144dB/mW
5. no battery needed
This device works without batteries. It weighs less and you don't have to worry about recharging or replacing the battery.
73% have it
6. has an in-line control panel
There is a control panel on the cable, so you can easily operate the device without having to interact with it.
44% have it
7. 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.
36% have it
8. 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.
75% have it
9. has a straight plug
A straight plug is better when the jack is on the top or bottom of your player.
54% have it
10. has included ear pads
Allows you to change ear pads without buying new ones.
42% have it
11. Can be used wirelessly
Wireless devices allow users more freedom of movement.
16% have it
12. 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.
42% have it
13. 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.
14% have it
14. travel bag is included
The device comes with its own special case or pouch, which is useful for safe transportation.
64% have it
15. has a battery level indicator
An indicator shows you when the device has low battery.
8% have it
16. has a 3.5mm male connector
A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.
87% have it
17. has an earbud form
The earbud form is ultracompact and lightweight, with little or no interference with earrings, spectacles, hats, or hairstyles. For some people it is more comfortable than in-ear form.