44points

Koss KDX100

90points

Sennheiser HD 4.40 BT

97points

Sennheiser PXC 550

Koss KDX100
Sennheiser HD 4.40 BT
Comparison winner
Sennheiser PXC 550
vs
vs

32 facts in comparison

Koss KDX100 vs Sennheiser HD 4.40 BT vs Sennheiser PXC 550

Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550
44
points
90
points
97
points

Why is Koss KDX100 better than Sennheiser HD 4.40 BT & Sennheiser PXC 550?

  • Lowest frequency
    10Hzvs18,17Hz
  • Impedance
    16 Ohmsvs18,490 Ohms
  • Has included ear pads
  • Has an in-ear form

Why is Sennheiser HD 4.40 BT better than Koss KDX100 & Sennheiser PXC 550?

Why is Sennheiser PXC 550 better than Koss KDX100 & Sennheiser HD 4.40 BT?

  • Highest frequency
    23000Hzvs20000,22000Hz
  • Has active noise cancelling (noise reduction)
  • Has an in-line control panel

Top specs and features

Design

1.has stereo speakers
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

2.has a detachable cable
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.

3.has an over-the-ear form
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

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.

4.can be folded
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

Folding devices are good for transporting as they take up less space in your bag.

5.has a tangle free cable
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

The cable is designed to minimize tangling.

For example

SoundMagic E11C

6.has an in-ear form
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

The in-ear device is ultracompact and lightweight, with little or no interference with earrings, spectacles, hats, or hairstyles. It is inserted in the ear canal itself and blocks out a lot of environmental noise. It has stronger bass tones and is unlikely to fall out of the ear.

Sound quality

1.highest frequency

20000Hz

22000Hz

23000Hz

The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.

Best

Sony MDR-Z1R

120000Hz

2.lowest frequency

10Hz

18Hz

17Hz

The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.

Best

Sony MH1CBLK

1Hz

3.has sound isolation/passive noise reduction
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.

4.sound pressure level

112dB/mW

113dB/mW

110dB/mW

Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

Best

AKG K553 Pro

144dB/mW

5.impedance

16 Ohms

18 Ohms

490 Ohms

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.

Best

Flips Solo 2 Social

4 Ohms

6.has a neodymium magnet
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

Devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. They also have more bass and clear high notes.

Power

1.has a battery level indicator
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

An indicator shows you when the device has low battery.

2.has a rechargeable battery
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

The battery can be recharged and used over again.

3.has a removable battery
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

The battery is removable and can be replaced by the user if broken.

For example

Bang & Olufsen Beoplay H9i

Connectivity

1.Can be used wirelessly
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

Wireless devices allow users more freedom of movement.

2.has a 3.5mm male connector
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.

3.supports Bluetooth pairing using NFC
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

Device supports fast Bluetooth pairing using NFC so it can communicate with other devices over Bluetooth. You can fastly pair devices without entering a code by simply holding one device next to the device with which it is to be paired.

4.Has WiFi
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

The device can connect to WiFi.

For example

Meters OV-1 Bluetooth

Features

1.control panel placed on a device
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

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.

2.can be used as a headset
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

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.

3.has an in-line control panel
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

There is a control panel on the cable, so you can easily operate the device without having to interact with it.

4.has a noise canceling microphone
Koss KDX100
Sennheiser HD 4.40 BT
Sennheiser PXC 550

These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.

For example

Microsoft Surface Headphones

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