| Audio-Technica ATH-ESW9A | Koss PRO4AAAT |
Top 25%509 points Top 25% 37 likes | Top 41%402 points Top 41% 30 likes |
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Top specs and features
Audio-Technica ATH-ESW9A vs Koss PRO4AAAT: 18 facts in comparison
1. highest frequency
The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.
35000Hz
25000Hz
2. lowest frequency
The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
10Hz
3. weight
425g lighter.
595g
4. 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.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
49% have it
5. impedance
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.
250Ohms
6. has a neodymium magnet
Devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. They also have more bass and clear high notes.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
35% have it
7. sound pressure level
Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
103dB/mW
98dB/mW
8. no battery needed
This device works without batteries. It weighs less and you don't have to worry about recharging or replacing the battery.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
73% have it
9. can be folded
Folding devices are good for transporting as they take up less space in your bag.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
31% have it
10. has stereo speakers
Devices with stereo speakers deliver sound that surrounds the user from left and right side, creating a richer sound and a better experience.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
74% have it
11. has a straight plug
A straight plug is better when the jack is on the top or bottom of your player.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
55% 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.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
42% have it
13. travel bag is included
The device comes with its own special case or pouch, which is useful for safe transportation.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
65% have it
14. has a coiled cord
A coiled cord typically offers more flexibility as it can be extended, and taken outside for example.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
8% have it
15. cable length
A long cable ensures more freedom of movement.
2.44m
16. has an on-ear form
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.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
22% have it
17. has a 3.5mm male connector
A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
87% have it
18. is open backed
The device is designed to allow sound out through the back of the earcup and provides very natural and accurate sound. It's good for home listening.
Audio-Technica ATH-ESW9A
Koss PRO4AAAT
10% have it
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