36points

Koss PRO4AAT

43points

Sennheiser HD1 Free

Koss PRO4AAT
Sennheiser HD1 Free
Comparison winner
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31 facts in comparison

Koss PRO4AAT vs Sennheiser HD1 Free

Koss PRO4AAT
Sennheiser HD1 Free

Why is Koss PRO4AAT better than Sennheiser HD1 Free?

  • 5Hz lower low-frequency
    ?

    10Hzvs15Hz
  • 3000Hz higher high-frequency
    ?

    25000Hzvs22000Hz
  • Has passive noise reduction
    ?
  • Has an over-the-ear form
    ?
  • Has a 3.5mm male connector
    ?
  • Can be folded
    ?
  • Has a coil cable
    ?
  • Has a straight plug
    ?

Why is Sennheiser HD1 Free better than Koss PRO4AAT?

  • 23dB/mW higher sound pressure level
    ?

    118dB/mWvs95dB/mW
  • 222 Ohms lower impedance
    ?

    28 Ohmsvs250 Ohms
  • Can be used as a headset
    ?
  • Can be used wirelessly
    ?
  • Has a rechargeable battery
    ?
  • Has a battery level indicator
    ?
  • Has an in-line control panel
    ?
  • Has an in-ear form
    ?

Price comparison

Sennheiser HD1 Free

ProductStorePrice
Sennheiser HD1 Free AmazonSennheiser HD1 Free Bluetooth Wireless H...Sennheiser HD1 Free Bluetooth Wireless Headphone, Bluetooth 4.2 with Qualcomm Apt-X and AAC, 6 hour battery life, 1.5 hour fast USB charging, multi-connection to 2 devices
Amazon logo
$99.95

Design

1.has stereo speakers
Koss PRO4AAT
Sennheiser HD1 Free
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 an over-the-ear form
Koss PRO4AAT
Sennheiser HD1 Free
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.
3.has a detachable cable
Koss PRO4AAT
Sennheiser HD1 Free
With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.
4.sweat resistance
Koss PRO4AAT
Sennheiser HD1 Free
Resistance to sweat makes it ideal for use while doing sports.
5.weather-sealed (splashproof)
Koss PRO4AAT
Sennheiser HD1 Free
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
6.can be folded
Koss PRO4AAT
Sennheiser HD1 Free
Foldable devices are easier to transport and take up less storage space.

Sound quality

1.lowest frequency

10Hz

15Hz

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

25000Hz

22000Hz

The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.
3.has passive noise reduction
Koss PRO4AAT
Sennheiser HD1 Free
The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.
4.has active noise cancellation (noise control)
Koss PRO4AAT
Sennheiser HD1 Free
This type of device allows you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise. Ideal for plane rides and morning commutes.
5.sound pressure level

95dB/mW

118dB/mW

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

250 Ohms

28 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.

Power

1.has a rechargeable battery
Koss PRO4AAT
Sennheiser HD1 Free
The battery can be recharged and used over again.
2.has a battery level indicator
Koss PRO4AAT
Sennheiser HD1 Free
An indicator shows you when the device has low battery.
3.has a removable battery
Koss PRO4AAT
Sennheiser HD1 Free
The battery is removable and can be replaced by the user if broken.

Connectivity

1.Can be used wirelessly
Koss PRO4AAT
Sennheiser HD1 Free
Wireless devices allow users more freedom of movement.
2.has a 3.5mm male connector
Koss PRO4AAT
Sennheiser HD1 Free
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 PRO4AAT
Sennheiser HD1 Free
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.supports Wi-Fi
Koss PRO4AAT
Sennheiser HD1 Free
The device can connect to Wi-Fi.

Features

1.can be used as a headset
Koss PRO4AAT
Sennheiser HD1 Free
A headset is one headphone or pair with a built-in microphone. Headsets can be used for apps that require communication i.e. Skype, games with voice chat, mobile phones, etc.
2.has a noise-canceling microphone
Koss PRO4AAT
Sennheiser HD1 Free
These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.
3.Has an in-line control panel
Koss PRO4AAT
Sennheiser HD1 Free
There is a control panel on the cable, so you can easily operate the device without having to interact with it.
4.Has voice prompts
Koss PRO4AAT
Sennheiser HD1 Free
With voice prompts, you will automatically receive information via audio messages – for instance, you may find out that the battery is running low, and it's time to recharge the device.
5.has a mute function
Koss PRO4AAT
Sennheiser HD1 Free
The device has an option to mute/unmute a conversation directly from the device.
6.has voice commands
Koss PRO4AAT
Sennheiser HD1 Free
You can use your voice to control key functions of the device and you can easily access your device without pushing any button.

Price comparison

Sennheiser HD1 Free

ProductStorePrice
Sennheiser HD1 Free AmazonSennheiser HD1 Free Bluetooth Wireless H...Sennheiser HD1 Free Bluetooth Wireless Headphone, Bluetooth 4.2 with Qualcomm Apt-X and AAC, 6 hour battery life, 1.5 hour fast USB charging, multi-connection to 2 devices
Amazon logo
$99.95

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