AKG K171 MKIIAKG K551
Top 50%656 points
Top 50%
Top 54%594 points
Top 54%
AKG K171 MKII
AKG K551
vs
Top specs and features

AKG K171 MKII vs AKG K551: 17 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.
26000Hz
Sony MDR-Z1R: 120000Hz
28000Hz

2. lowest frequency

The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
18Hz
Sony MH1CBLK: 1Hz
12Hz

3. weight

65g lighter.
240g
Sony MDR-EX150AP: 3g
305g

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 K171 MKII
AKG K551
48% 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.
55Ohms
Flips Solo 2 Social: 4Ohms
32Ohms

6. sound pressure level

Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
107dB/mW
AKG K553 Pro: 144dB/mW
114dB/mW

7. 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 K171 MKII
AKG K551
73% have it

8. 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 K171 MKII
AKG K551
38% have it

9. can be folded

Folding devices are good for transporting as they take up less space in your bag.
AKG K171 MKII
AKG K551
31% have it

10. 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.
30mm
Audeze EL-8 Titanium: 100mm
50mm

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 K171 MKII
AKG K551
75% have it

12. has a straight plug

A straight plug is better when the jack is on the top or bottom of your player.
AKG K171 MKII
AKG K551
54% have it

13. has included ear pads

Allows you to change ear pads without buying new ones.
AKG K171 MKII
AKG K551
42% have it

14. has a coiled cord

A coiled cord typically offers more flexibility as it can be extended, and taken outside for example.
AKG K171 MKII
AKG K551
8% have it

15. cable length

A long cable ensures more freedom of movement.
3m
Pioneer SE-A1000: 6m
1.2m

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.
AKG K171 MKII
AKG K551
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.
AKG K171 MKII
AKG K551
87% have it

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