AKG K121 StudioSennheiser HD 218i
Top 59%548 points
Top 59%
Top 52%644 points
Top 52%
AKG K121 Studio
Sennheiser HD 218i
vs
Top specs and features

AKG K121 Studio vs Sennheiser HD 218i: 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.
22500Hz
Sony MDR-Z1R: 120000Hz
21000Hz

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
19Hz

3. weight

128g lighter.
220g
Sony MDR-EX150AP: 3g
92g

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 K121 Studio
Sennheiser HD 218i
47% 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. 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 K121 Studio
Sennheiser HD 218i
33% have it

7. sound pressure level

Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
114dB/mW
AKG K553 Pro: 144dB/mW
108dB/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 K121 Studio
Sennheiser HD 218i
72% have it

9. has a tangle free cable

The cable is designed to minimize tangling.
AKG K121 Studio
Sennheiser HD 218i
25% have it

10. 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.
AKG K121 Studio
Sennheiser HD 218i
44% have it

11. 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.
AKG K121 Studio
Sennheiser HD 218i
36% have it

12. 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 K121 Studio
Sennheiser HD 218i
76% have it

13. has a straight plug

A straight plug is better when the jack is on the top or bottom of your player.
AKG K121 Studio
Sennheiser HD 218i
53% have it

14. 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 K121 Studio
Sennheiser HD 218i
32% 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.
AKG K121 Studio
Sennheiser HD 218i
87% have it

17. cable length

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

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 K121 Studio
Sennheiser HD 218i
22% have it

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