Koss KDE250JBL Duet BT
Top 68%436 points
Top 68%
Top 14%1,174 points
Top 14%
Koss KDE250
JBL Duet BT
vs
Top specs and features

Koss KDE250 vs JBL Duet BT: 24 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.
20000Hz
Sony MDR-Z1R: 120000Hz
20000Hz

2. lowest frequency

The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
40Hz
Sony MH1CBLK: 1Hz
20Hz

3. 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.
16 Ohms
Flips Solo 2 Social: 4 Ohms
32 Ohms

4. sound pressure level

Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
95dB/mW
AKG K553 Pro: 144dB/mW
111dB/mW

5. no battery needed

This device works without batteries. It weighs less and you don't have to worry about recharging or replacing the battery.
Koss KDE250
JBL Duet BT
71% have it

6. has a tangle free cable

The cable is designed to minimize tangling.
Koss KDE250
JBL Duet BT
24% have it

7. 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.
Koss KDE250
JBL Duet BT
39% have it

8. can be folded

Folding devices are good for transporting as they take up less space in your bag.
Koss KDE250
JBL Duet BT
32% have it

9. 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.
Koss KDE250
JBL Duet BT
45% have it

10. 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.
Koss KDE250
JBL Duet BT
40% 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.
Koss KDE250
JBL Duet BT
78% have it

12. travel bag is included

The device comes with its own special case or pouch, which is useful for safe transportation.
Koss KDE250
JBL Duet BT
63% have it

13. has a straight plug

A straight plug is better when the jack is on the top or bottom of your player.
Koss KDE250
JBL Duet BT
51% have it

14. Can be used wirelessly

Wireless devices allow users more freedom of movement.
Koss KDE250
JBL Duet BT
19% have it

15. has included ear pads

Allows you to change ear pads without buying new ones.
Koss KDE250
JBL Duet BT
41% 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.
Koss KDE250
JBL Duet BT
31% have it

17. control panel placed on a device

There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.
Koss KDE250
JBL Duet BT
16% have it

18. has a battery level indicator

An indicator shows you when the device has low battery.
Koss KDE250
JBL Duet BT
10% have it

19. has a 3.5mm male connector

A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.
Koss KDE250
JBL Duet BT
85% have it

20. 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.
Koss KDE250
JBL Duet BT
23% have it

21. has a rechargeable battery

The battery can be recharged and used over again.
Koss KDE250
JBL Duet BT
12% have it

22. has a removable battery

The battery is removable and can be replaced by the user if broken.
Koss KDE250
JBL Duet BT
6% have it

23. has an earbud form

The earbud form is ultracompact and lightweight, with little or no interference with earrings, spectacles, hats, or hairstyles. For some people it is more comfortable than in-ear form.
Koss KDE250
JBL Duet BT
4% have it

24. has an open-back design

The device is designed in a way that allows sound to go out through the back of the ear cups, which usually have vents or perforations. This design provides very natural and accurate sound.
Koss KDE250
JBL Duet BT
10% have it

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