AKG K99 PerceptionUltrasone HFI-450
Top 58%593 points
Top 58%
Top 60%560 points
Top 60%
AKG K99 Perception
Ultrasone HFI-450
Top specs and features

AKG K99 Perception vs Ultrasone HFI-450: 13 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

125g lighter.
Sony MDR-EX150AP: 3g

4. 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

5. 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

6. 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 K99 Perception
Ultrasone HFI-450
69% have it

7. has a tangle free cable

The cable is designed to minimize tangling.
AKG K99 Perception
Ultrasone HFI-450
24% have it

8. can be folded

Folding devices are good for transporting as they take up less space in your bag.
AKG K99 Perception
Ultrasone HFI-450
31% have it

9. 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

10. 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 K99 Perception
Ultrasone HFI-450
40% have it

11. has a straight plug

A straight plug is better when the jack is on the top or bottom of your player.
AKG K99 Perception
Ultrasone HFI-450
50% have it

12. 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 K99 Perception
Ultrasone HFI-450
83% have it

13. cable length

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

Top 10 headphones

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