55points

AKG K545

80points

Audio Technica ATH-DSR9BT

58points

Oppo PM-1

88points

Sennheiser HD 4.40 BT

AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Comparison winner
Sennheiser HD 4.40 BT
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vs
vs

33 facts in comparison

AKG K545 vs Audio Technica ATH-DSR9BT vs Oppo PM-1 vs Sennheiser HD 4.40 BT

AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

Why is AKG K545 better than Audio Technica ATH-DSR9BT & Oppo PM-1 & Sennheiser HD 4.40 BT?

  • Has an in-line control panel

Why is Audio Technica ATH-DSR9BT better than AKG K545 & Oppo PM-1 & Sennheiser HD 4.40 BT?

  • Lowest frequency
    5Hzvs10,10,18Hz

Why is Oppo PM-1 better than AKG K545 & Audio Technica ATH-DSR9BT & Sennheiser HD 4.40 BT?

  • Has an open-back design

Why is Sennheiser HD 4.40 BT better than AKG K545 & Audio Technica ATH-DSR9BT & Oppo PM-1?

  • Impedance
    18 Ohmsvs32,38,32 Ohms
  • Weight
    221.1gvs281.5,310,395g
  • Sound pressure level
    113dB/mWvs31,97,102dB/mW
  • Has an L-shaped plug

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Top specs and features

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Design

1.has stereo speakers
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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.weight

281.5g

310g

395g

221.1g

Best

Sony MDR-EX150AP

3g

4.has a detachable cable
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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

5.can be folded
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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

6.has a tangle free cable
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

The cable is designed to minimize tangling.

For example

SoundMagic E11C

relevant

Sound quality

1.lowest frequency

10Hz

5Hz

10Hz

18Hz

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

2.highest frequency

25000Hz

45000Hz

50000Hz

22000Hz

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

3.has sound isolation/passive noise reduction
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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

31dB/mW

97dB/mW

102dB/mW

113dB/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.has a neodymium magnet
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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

6.impedance

32 Ohms

38 Ohms

32 Ohms

18 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

relevant

Power

1.has a battery level indicator
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

An indicator shows you when the device has low battery.

2.has a rechargeable battery
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

The battery can be recharged and used over again.

3.has a removable battery
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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

For example

Bang & Olufsen Beoplay H9i

relevant

Connectivity

1.Can be used wirelessly
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

Wireless devices allow users more freedom of movement.

2.has a 3.5mm male connector
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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

3.supports Bluetooth pairing using NFC
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

The device can connect to WiFi.

For example

Meters OV-1 Bluetooth

relevant

Features

1.control panel placed on a device
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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.has an in-line control panel
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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

3.can be used as a headset
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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.

4.has a noise canceling microphone
AKG K545
Audio Technica ATH-DSR9BT
Oppo PM-1
Sennheiser HD 4.40 BT

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

For example

Microsoft Surface Headphones

Top 10 headphones

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