Poly - Plantronics SupraPlus DIGITAL D251N Specifications, Tests and Review

Headphone type
On-ear
Connectivity
Wired
Frequency Response
100 - 4000 Hz
Impedance
150 Ohm
Microphone
Boom

Complete technical specifications, details, expert ratings and review of Poly - Plantronics SupraPlus DIGITAL D251N. Find out how your chosen headphones stack up against the competition and whether they are the ones that best meet your expectations with the headphone comparison feature.

Poly - Plantronics SupraPlus DIGITAL D251N Full Specifications and Details

design and dimensions sound quality microphone connections others

DESIGN AND DIMENSIONS Poly - Plantronics SupraPlus DIGITAL D251N
Product Type Headset - wired
Weight 49 g Better than 91 % of headphones rated.
Recommended Use Phone

The Poly - Plantronics SupraPlus DIGITAL D251N are wired headphones. In the case of studio and professional DJ headphones, a wired connection is a standard and a necessity. In this case, connecting via cable reduces audio transmission delays and prevents unwanted battery drain as it would be in case of wireless headphones. The same is de facto true for gaming headsets. In case of headphones for normal music listening, the cable is rather a relic, although it still has its fans. However, the wireless option is much more popular for everyday use in today’s world.

The headphones are designed as on-ear. On-ear headphones are generally lighter. However, their design has fewer isolation capabilities, and therefore, for example, more sound can be let in and out compared to around-ear headphones. The weight of the headphones is 49 g.

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SOUND QUALITY Poly - Plantronics SupraPlus DIGITAL D251N
Headphones Form Factor On-ear
Headphones Technology Dynamic
Connectivity Technology Wired
Sound Output Mode Mono
Frequency Response 100 - 4000 Hz Worse than 98 % of headphones rated.
Impedance 150 Ohm

The sound quality can be affected by many factors. When it comes to frequency range, the wider it is, the more detail you will hear when listening. However, the range a person can perceive is highly individual. The average person is able to perceive frequencies in the range of 16 to 20 000 Hz. So the most common frequency range you will see on the market is 20 to 20,000 Hz. Lower frequencies up to approximately 256 Hz are considered bass frequencies. Therefore, the lower the bottom value is, the better the headphones will reproduce bass. Conversely, values from approximately 2 048 Hz upwards are treble. That is why headphones with a high upper value will provide a much more accurate reproduction of high notes. Poly - Plantronics SupraPlus DIGITAL D251N offers a frequency range of 100 - 4000 Hz.

The device connected to the headphones also plays a role most times. The lower impedance value (approximately 100 to 150 Ohms) is suitable for playback from mobile phones, laptops or other portable players that do not have a powerful enough amplifier. The lower impedance will ensure that the required volume level is achieved with less power, thus extending the life of the player. However, at the same time, with lower impedance, there is more distortion of the sound. Headphones with a higher impedance of around 250 Ohms and above are then more suitable for playback from really powerful signal sources or using a headphone amplifier, otherwise the sound coming out of them might not be loud enough. At the same time, higher-impedance headphones will also ensure less distortion in the sound. In the case of these headphones, the impedance reaches the 150 Ohm value.

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MICROPHONE Poly - Plantronics SupraPlus DIGITAL D251N
Type Boom
Microphone Operation Mode Mono
Frequency Response 200 - 4000 Hz Worse than 96 % of headphones rated.
Sensitivity -49 dB
Impedance 1.5 kOhm

Poly - Plantronics SupraPlus DIGITAL D251N has a boom–type microphone. The microphone sensitivity is -49 dB. A lower microphone sensitivity will generally ensure that even quieter sounds are caught. On the other hand, in noisier environments, distortion of the recording may occur. With a higher sensitivity, the microphone will not distort the recording even in noisy environments. On the other hand, the microphone will not pick up quieter sounds. So it depends on the environment and the purposes you plan to use the headphones for.

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CONNECTIONS Poly - Plantronics SupraPlus DIGITAL D251N
Connector Type Headset
OTHERS Poly - Plantronics SupraPlus DIGITAL D251N
Bundled with Plantronics VistaPlus DM15 Amplifier
Service & Support Limited warranty - 2 years

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