Ingress protection ratings refer to the level of protection given by a casing, against solids and liquids. The letters 'IP' are followed by two values The first value of the IP rating means protection against solids such as dust, followed by the one that refers to protection against liquids (sweat).
Scoring IPX5, the Boult Audio Z40's rating for solids indicates that no data available to specify a protection rating, and of liquids that they can withstand medium pressure jet that's 6.3mm diameter, similar to garden hose from any angle for 3 minutes at a distance of 2.5 to 3 metres. Compared to the Boult Audio Z40, Sony LinkBuds S have a rating of IPX4 meaning that
we are not yet certain of their rating with solids (dust)
and that of liquids is that,
Sony LinkBuds S has a lower liquid rating than Boult Audio Z40
Boult Audio Z40 have a weight of 40g . We consider a lower weight better because lighter devices are more comfortable to transport.
The Sony LinkBuds S, at 9.6g
are lighter than the Boult Audio Z40 with a difference -30.4g
True wireless devices have no cables linking any part of the device together, Boult Audio Z40 are true wireless for this case since they don't have wires. This is a major difference as some wireless earbuds have cables linking the pair of earbuds .
Sony LinkBuds S also is true wireless because it doesn't have wires linking the two earbuds together. Boult Audio Z40 have wingtips, these are commonly used for earbuds for workouts and are usually an optional add-on to each silicone ear tip for a more secure fit.
Boult Audio Z40 have sweat resistance
Sony LinkBuds S's resistance to sweat makes both devices ideal for use during long-distance running, marathons, training in workout bodysuits, etc
Boult Audio Z40 are both dustproof and water-resistant. Boult Audio Z40 have stereo speakers, what this means is that Boult Audio Z40's speakers deliver sound from separate channels on both left and right sides, this creates a richer sound and a better listening experience. Both Sony LinkBuds S and Boult Audio Z40 have stereo speakers
The Boult Audio Z40 sit well in place, creating a sound covering that reduces background sounds and also prevents the earbuds sound from leaking out at the same.
Both of these devices have passive noise reduction this implies that both limit ambient noise instead of actively using technology to cancel it out. The Boult Audio Z40 have a unit size of 10mm in diameter, bigger drivers are more powerful, therefor producing better bass. The driver unit is basically a mini speaker that produces sound in the earbuds, the unit size corellates with the loudness of the earbuds.
Sony LinkBuds S driver unit is 5mm in diameter,
which implies that they have a smaller driver unit than that of Boult Audio Z40 by 5mm
, many people have a misconception that driver units of a bigger size automatically produce better sound quality.
However, large drivers find it difficult to produce high frequencies so it's true that, larger drivers can generate louder sound, but this does not indicate that they produce better quality sound. The Boult Audio Z40's lowest frequency is at 20Hz, low-frequency response inidcates how well a particular audio device produces low frequencies that can be heard, and if it alters the signal while at it.
Sony LinkBuds S's lowest frequency is at 20Hz, this implies that
both devices produce equal bass
The Boult Audio Z40's highest frequency is at 20,000Hz, high-frequency response tells how well a particular audio device generates high audible frequencies and if it changes to the signal while at it. Sony LinkBuds S's highest frequency is at 40,000Hz, this means that
Sony LinkBuds S generate a clearer and crispier treble than the Boult Audio Z40
Boult Audio Z40's battery life is 10 hours, these last longer than 5 hours of listening which is considered average for a single charge. A device's battery life is commonly given by the manufacturer, and with longer battery life, you get to use it for longer and have to charge the device less often.
Sony LinkBuds S's battery life is
less than that of Boult Audio Z40 by 4 hours
. Every time you recharge your device, they get a little less playing time. The effect is barely noticeable at first, but over a few years, your wireless earbuds will have shorter listening time. This is given by the manufacturer, and the Boult Audio Z40's case has a charge of 50 hours.
A charging case with a longer battery life enables you to recharge your earbuds on the go many times before having to recharge the case itself. Sony LinkBuds S's charging case has a battery life of 14 hours,
less than that of Boult Audio Z40 by 36 hours
It takes 1.5 hours to fully charge the Boult Audio Z40's battery. It is recommended to fully charge the battery before using the earbuds when they have been unused for extended periods.
Sony LinkBuds S takes 2 hours to fully charge the battery,
more than that of Boult Audio Z40 by 0.5 hours
Boult Audio Z40 support USB TYPE-C, an industry-standard connector for transmitting both data and power through a single cable. Sony LinkBuds S too have USB TYPE-C. This USB-C plug comes along with most current electronics.
The Boult Audio Z40 have Bluetooth version of 5.3, Bluetooth is a wireless technology standard that enables data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Sony LinkBuds S has a Bluetooth version of 5.2,
older than that of Boult Audio Z40
. Newer versions provide faster data transfers. Boult Audio Z40 have a 10meters distance to connect via Bluetooth.
Sony LinkBuds S have a maximum range of 10meters,
equal to that of the Boult Audio Z40
Boult Audio Z40 support AAC, a codec that is used for Bluetooth audio. It supports 24-bit audio at 250kbps. Since it uses psychoacoustic modeling, it can provide better results than other codecs at a similar bit rate.
Since its the highest quality codec that any Bluetooth-supporting Apple product supports, the Boult Audio Z40 will work well with your MacBook. If you intend on using these with Android you need to pay even closer attention to codec support for if they only have AAC they won't provide the best audio quality possible, ensure that they also support aptX HD, LDAC, or LHDC as well. The Sony LinkBuds S 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. Boult Audio Z40 have 2 microphones. While the Sony LinkBuds S microphones are 6,
more than that of Boult Audio Z40 by 4
. More microphones result in better sound quality and enable the earbuds to filter out noise.
Boult Audio Z40 support in/on-ear detection, the sensors in the device can detect when they are removed from your ears .
Sony LinkBuds S too support in/on-ear detection, automatically pauses your music, or audiobook when you remove earbuds from your ears saving battery life. Boult Audio Z40 support fast charging. Most often, technologies like Qualcomm’s Quick Charge, are used to lower the time it takes to fully charge a device.
Also the Sony LinkBuds S support fast charging. This kind is similar to regular charging, only that the battery fills up much faster. For example, with Quick Charge 3.0, the battery can be charged to 50% in just thirty minutes.
Boult Audio Z40 have a mute function, they support the option to mute/unmute a conversation directly from the device. The Sony LinkBuds S too have the mute function. The mute function means that you unilaterally turn off the device's microphone, but you can still hear the other party talk.
With the Boult Audio Z40, so you can access the volume control, pause, play, mute, etc whichever features are supported on the earbuds. The Sony LinkBuds S too have a control panel on them. The Boult Audio Z40 have a warranty period of 1 Years, 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.
Boult Audio Z40 support voice prompts. With voice prompts, you receive information through audio messages, like if there is an issue with the connection. Sony LinkBuds S also have voice prompts meaning the device notifies you if the battery is running low, and it's time to recharge the earbuds.
