Sennheiser HD 350BT have a weight of 238g, these weigh below 320g, which we consider as the highest average a headphone should weigh for comfort during long use. We consider a lower weight better because lighter devices are more comfortable to move with. The Sony WH CH520, at 147g
are lighter than the Sennheiser HD 350BT by -91g
Sennheiser HD 350BT are foldable, which makes them more portable.
Foldable headphones are easier to transport and take up less storage space. Over-ear headphones have larger earpads that fit around your entire ear Sennheiser HD 350BT have a comfortable full-size form with earcups that fully enclose your ears. This design is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors.
Sennheiser HD 350BT have stereo speakers, devices with stereo speakers deliver sound from separate channels on both left and right sides, this creates a richer sound and a better listening experience. Both Sony WH CH520 and Sennheiser HD 350BT have stereo speakers
Passive Noise Cancellation uses well-designed ear cups to seal out unwanted noise. This is used for both in-ear earphones and over-ear headphones where the headphone itself will keep surrounding noise out.
The Sennheiser HD 350BT sits tightly in place, creating an acoustic seal that reduces background noise and prevents your music from leaking out. Both of these devices have passive noise reduction which means that also the Sony WH CH520 isolates you from ambient noise instead of actively using technology to cancel it out. Low-frequency response measures if and how well an audio component reproduces low audible frequencies and if it makes any changes to the signal on the way through.
Sennheiser HD 350BT's lowest frequency is at 18Hz, the lower the low-frequency response, the stronger and juicier the bass. Sony WH CH520's lowest frequency is at 20Hz, this means that
Sony WH CH520 got a juicier bass than the Sennheiser HD 350BT
High frequency response measures if and how well a particular audio device reproduces high audible frequencies and if it changes to the signal on the way through. Sennheiser HD 350BT's highest frequency is at 22,000Hz, the higher the high-frequency response, the clearer and crispier the treble.
Sony WH CH520's highest frequency is at 20,000Hz, this means that
Sennheiser HD 350BT got a clearer and crispier treble than the Sony WH CH520
Sound pressure is the average variation in atmospheric pressure caused by the sound, the sound level .i.e how loud something is can be perceived differently by different people so we need to have a way of getting an objective measurement of sound level expressed in numerical terms.
The sound pressure level, SPL, is the pressure level of a sound, measured in decibels, dB, Sennheiser HD 350BT's measurement is 108dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
Sony WH CH520's sound pressure level measurement is 97dB/mW. The driver unit is basically a mini speaker that produces sound in the device, its size dictates the loudness of the headphone. Sennheiser HD 350BT driver unit is 32mm in diameter, bigger drivers are more powerful and can produce better bass.
Sony WH CH520 driver unit is 30mm in diameter,
which means that they have a smaller driver unit than that of Sennheiser HD 350BT by 2mm
, many people have a misconception that driver units of a bigger size automatically produce better sound quality.
However, large drivers usually have difficulty reproducing high frequencies so it's true that, larger drivers can generate louder sound, but this does not mean that they produce better sound. Impedance is the device's resistance to the electromagnetic current, as electricity flows through a conductor, it faces electrical resistance that counters the flow of current.
The resistance of a conductor is measured in ohms. Sennheiser HD 350BT's impedance is 32Ohms, the lower the impedance, the easier it is to get higher volume and requires less power. Sony WH CH520's impedance is 35Ohms.
The impedance of earbuds is the electrical resistance of the driver unit present on the inside. Neodymium magnets when used in audio devices produce a higher sensitivity and substantial sound output while using less power. They can help produce music at quite a high sound pressure level, SPL, with the use of high magnetic flux.
The Sennheiser HD 350BT have this type of magnet. Sony WH CH520 have it too, devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. It is also known that they have more bass and clear high notes.
If your headphones play wirelessly, cancel ambient noise, or enhance your listening experience with active features, their battery life will reduce over time. The device's battery life is given by the manufacturer, with longer battery life, you get to use it for longer and have to charge the device less often. Sennheiser HD 350BT's battery life is 30 hours
Sony WH CH520's battery life is 40 hours.
Each time you recharge your headphones, they get a little less listening time. The effect is barely noticeable at first. But over a few years, you may find that your device, no longer plays for long like it used to.
It takes 2 hours to fully charge the Sennheiser HD 350BT's battery. It is recommended to fully charge the battery before using the headphones for the first time or when they have been unused for extended periods. Sony WH CH520 takes 3 hours to fully charge the battery
Sennheiser HD 350BT have a battery level indicator, an indicator shows you when the device has a low battery.
The battery indicator lights indicate the charging status of your headphones. Sony WH CH520 too have a battery level indicator, charging indicators allow you to determine the charging state of your headphones, whether fully charged, or the battery is running low. Battery power, or battery capacity, represents the amount of electrical energy that a battery can store.
Sennheiser HD 350BT's battery power is 300mAh, more battery power can be an indication of longer battery life. Sony WH CH520's battery power is 400mAh. A rechargeable battery is a type of electrical battery that can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.
Sennheiser HD 350BT's battery can be recharged and used over again. The Sony WH CH520 too have a rechargeable battery. Sennheiser HD 350BT can be used wirelessly, wireless devices allow you more freedom of movement.
The Sony WH CH520 also can be used wirelessly
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Sennheiser HD 350BT has a v5
Sony WH CH520 has a Bluetooth version of v5.2. Newer versions provide faster data transfers.
Sennheiser HD 350BT support USB TYPE-C, an industry-standard connector for transmitting both data and power on a single cable. The USB-C plug is now part and parcel of most current laptops, phones, and tablets, it features reversible plug orientation and cable direction. Sony WH CH520 too have USB TYPE-C
Sennheiser HD 350BT support APTX, a codec used for transmitting audio wirelessly with Bluetooth.
It is developed by Qualcomm and supports 16-bit audio at a bit rate of 384kbps. Sennheiser HD 350BT support AAC, a codec that is used for Bluetooth audio. It supports 24-bit audio at 250kbps.
Because it uses psychoacoustic modeling, it can provide better results than other codecs at a similar bit rate. The Sony WH CH520 support AAC as well. Designed to be the successor of the MP3 format, AAC generally achieves higher sound quality than MP3 encoders at the same bit rate.
Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances. The Sennheiser HD 350BT can connect at a 10meters distance via Bluetooth or infrared to another device. The Sony WH CH520 can connect at a 10meters distance via Bluetooth
Sennheiser HD 350BT have only 1 microphones, more microphones result in better sound quality and enable the device to filter out background noise.
The Sony WH CH520 microphones are only 1. The highest mic frequency of a microphone is defined as its upper limiting frequency. With today's microphones, you can reach a frequency high reaching up to 140 kHz.
Sennheiser HD 350BT's highest mic frequency is 6,000Hz, the highest frequency that the mic can pick up. Better for recording treble. The lowest mic frequency of a microphone is defined as its lower limiting frequency.
With today's microphones, you can have a frequency starting from around 1Hz. Sennheiser HD 350BT's lowest mic frequency is 80Hz, the lowest frequency that the mic can pick up. Better for recording bass.
Sennheiser HD 350BT support ambient sound mode, which uses microphones to pass through ambient noises so that they can still be heard. It’s useful when you want to listen to music but also be aware of what’s happening around you, for example when you’re having a jog but would still want to be able to hear traffic. Sennheiser HD 350BT support multipoint, which allows you to link to more Bluetooth devices and switch between them.
For example, you can easily switch calls from one device to another without having to manually disconnect and reconnect. The Sony WH CH520 support multipoint count. Bluetooth multipoint would come in handy because you can be on one call without missing notifications coming from another device.
There is a control panel on the Sennheiser HD 350BT 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. The Sony WH CH520 too have a control panel on them. Sennheiser HD 350BT can be used as a headset.
A headset is one headphone or pair with a built-in microphone. Headsets can be used for apps that require communication i.e. Zoom, Google Meet, Skype, games with voice chat, mobile phones, etc.
Sony WH CH520 can be used as a headset. since they have a built-in microphone
The period of time that warrant free repair and adjustment services in case of a malfunction occurring under normal use that has followed instruction manuals. When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.
Sennheiser HD 350BT have a warranty period of 2 years
