Sennheiser PX 685i Sports Specifications, Tests and Review

Headphone type
In-ear - vertical
Connectivity
Wired
Frequency Response
18 - 20000 Hz
Sensitivity
120 dB
Impedance
16 Ohm
Microphone
On-cable

Complete technical specifications, details, expert ratings and review of Sennheiser PX 685i Sports. 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.

Sennheiser PX 685i Sports Full Specifications and Details

design and dimensions sound quality microphone remote control cable connections others

DESIGN AND DIMENSIONS Sennheiser PX 685i Sports
Product Type Headphones - wired - 3.5 mm jack
Series Sennheiser/adidas Sports Line
Weight 24 g Worse than 81 % of in-ear headphones rated.
Protection Waterproof
Design Sports
Recommended Use Portable electronics

The Sennheiser PX 685i Sports 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 weight of the headphones is 24 g.

Show more
SOUND QUALITY Sennheiser PX 685i Sports
Headphones Form Factor In-ear - vertical
Headphones Technology Dynamic
Connectivity Technology Wired
Sound Output Mode Stereo
Frequency Response 18 - 20000 Hz Better than 56 % of in-ear headphones rated.
Total Harmonic Distortion (THD) 0.5% Better than 68 % of in-ear headphones rated.
Sensitivity 120 dB Better than 98 % of in-ear headphones rated.
Impedance 16 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. Sennheiser PX 685i Sports offers a frequency range of 18 - 20000 Hz. The sensitivity parameter determines how sensitively the headphones can receive the signal from the source. The higher the sensitivity value, the louder the headphones will be able to play with less power consumption. In general, a higher listening volume also means a higher power load for the connected device. So if you're buying headphones to listen to music from your mobile phone, for example, this is relevant to think about as you don't want to drain your phone's battery too much. Lower values around 85 dB are more suitable for listening in more quiet environments (for example, at home or in the office). Medium values of around 90 dB can provide good listening quality in noisier environments (for example, on public transport or in cafés). Headphones with high sensitivity values of around 100 dB or more are designed for really noisy environments, such as concerts. The Sennheiser PX 685i Sports has 120 dB.

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 16 Ohm value. Total harmonic distortion is one of the parameters you will come across and usually includes the average value of the distortion when reproducing all frequency bands. This parameter is not critical when choosing headphones, but it is important to remember that higher harmonic distortion can negatively affect sound quality. In case of these headphones, the total harmonic distortion is Audio Output | Total Harmonic Distortion.

Show more
MICROPHONE Sennheiser PX 685i Sports
Type On-cable
Connectivity Technology Wired
Frequency Response 100 - 10000 Hz Better than 75 % of in-ear headphones rated.
Audio Input Details Omni-directional - 100 - 10000 Hz
Sensitivity -44 dBV/Pascal

The Sennheiser PX 685i Sports has a microphone built directly on the cable. The microphone sensitivity is -44 dBV/Pascal. 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.

Show more
REMOTE CONTROL Sennheiser PX 685i Sports
Controls Play/pause
CABLE Sennheiser PX 685i Sports
Cable Type Headphones cable - 1.2 m
CONNECTIONS Sennheiser PX 685i Sports
Connector Type Headphones (mini-phone 3.5 mm 4-pole)
OTHERS Sennheiser PX 685i Sports
Included Accessories Carrying pouch, cable clip, 2 pairs of ear sleeves, foam ear pads
Service & Support Limited warranty - 2 years

Similar Headphones

Other Sennheiser Headphones

Other projects: