AKG K551Ultrasone Signature Pro
Top 53%660 points
Top 53%
Top 44%785 points
Top 44%
AKG K551
Ultrasone Signature Pro
Top specs and features

AKG K551 vs Ultrasone Signature Pro: 19 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.
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. weight

5g lighter.
Sony MDR-EX150AP: 3g

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.
AKG K551
Ultrasone Signature Pro
45% 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.
32 Ohms
Flips Solo 2 Social: 4 Ohms
32 Ohms

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.
AKG K551
Ultrasone Signature Pro
35% have it

7. 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

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.
AKG K551
Ultrasone Signature Pro
69% have it

9. has a detachable cable

With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.
AKG K551
Ultrasone Signature Pro
39% have it

10. can be folded

Folding devices are good for transporting as they take up less space in your bag.
AKG K551
Ultrasone Signature Pro
31% have it

11. 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.
AKG K551
Ultrasone Signature Pro
76% have it

12. driver unit size

The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.
Audeze LCD2 Classic: 106mm

13. 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.
AKG K551
Ultrasone Signature Pro
40% have it

14. travel bag is included

The device comes with its own special case or pouch, which is useful for safe transportation.
AKG K551
Ultrasone Signature Pro
63% have it

16. has an L-shaped plug

An L-shaped plug is better if the jack is on the left or right side of the device, so that the cable isn't bent, and is less likely to break when the device is in your pocket.
AKG K551
Ultrasone Signature Pro
31% 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.
AKG K551
Ultrasone Signature Pro
83% have it

18. 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.
AKG K551
Ultrasone Signature Pro
23% have it

19. cable length

A long cable ensures more freedom of movement.
Pioneer SE-A1000: 6m

Top 10 headphones

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