Bowers & Wilkins PI4 Review

Bowers & Wilkins PI4 Review

Bowers & Wilkins’ latest line of wireless headphones has already been thoroughly tested. We were already quite thrilled about the PX5 and PX7 . The PX5, in particular, is a home run at a reasonable price. That takes us to the first point of contention: the new Bowers & Wilkins PI4 price. Is B&W shooting itself in the foot by competing with itself? Is there something more nuanced there?

The Bowers & Wilkins PI4 is an in-ear variant, while the PX5 is a durable on-ear type. That makes a major difference in the target population that B&W wishes to appeal to. The PI4 has been designed to the same high-quality standards as the PX5 and PX7 within the Abbey Road Studio’s walls. The design of the new line of head-fi was overseen by the same brilliant team that created the 800 Diamond series. With that in mind, the in-housing ears make more sense. Not only does it have a great design, but it’s also functional and melodic. A musical composition.


  • Hi-Fi quality audio
  • Long battery life
  • Good Active Noise Canceling


  • A bit expensive
  • Storage/Wire

14mm drivers are found on the inside. A convenient feature: the outside of the housing includes a magnet. The two ends will cling together as a result of this. That’s great because the in-ears won’t dangle in all directions anymore. The use of Bluetooth aptX ensures high audio quality. A functionality that is almost self-evident for this pricing is Active Noise Cancelling. As a result, it can also be found on the B&W PI4. There’s also a USB-C port on the device. This allows you to recharge the battery in about an hour, giving you approximately 12 hours of listening time. However, in actuality, it is a little less.

Appropriate Hi-Fi

One of the most crucial aspects of in-ear headphones is the fit. They only have to be in the appropriate spot, especially while on the road.  Listening becomes an unpleasant pastime as soon as things are even slightly out of sequence. The B&W PI4 has flexible ear tips, which feel like soft silicone. A hook, fashioned to fit into the auricle, is also located adjacent to the tip. As a result, the PI4 is entirely trapped.

The hook, as well as the cable that runs down, are both constructed of soft silicone. This adds to the PI4’s comfort and enjoyment of wearing it. Metal is used only in the operation element, which also houses the battery. That part is supported by the neck and/or shoulders. When it’s chilly outside, however, that element takes over. That’s just a little less tasty. When you wear a scarf over it, it’s also a little more difficult to operate. Sports, on the other hand, are enjoyable. The two parts have some weight to them, which helps to make everything a little nicer, and they also help to cool you off. At the very least, during the first five minutes.

Cycling, running, and rowing have all been certified. The examination did not pass since it required a lot of jumping, such as in basketball. The weight of the two pieces then swings up and down, which is ineffective, but you’re safe in the other categories. Some readers commented about the PI4’s ease of cleaning after use. The silicone substance was created specifically for that purpose. The PI4 also has an active target group in mind. The Bowers & Wilkins PI4 is also sweat-proof, according to B&W. However, the PI4 should not be rinsed under the tap.

Higher Hi-Fi Expertise

It’s time for the Bowers & Wilkins PI4 to perform. What is the audio playback quality like? We listened to a lot of music and modern sounds for this. Something with a lot of volume and a lot of youngsters selling their souls to get a hit.

To begin, we’ll listen to Justin Bieber’s Intentions. To be clear, we’re keeping an ear out for you! The song is full of obnoxiousness and low-toned anxiousness. However, the B&W PI4 manages to add nuance. The in-ears know how to display the many levels in a nice and orderly manner. The PI4 can even convey the low end in a pleasing manner. Whereas many other cheap in-ears would cause a ruckus, this one sticks out thanks to its profound HiFi origins. Roots that, of course, only become heard when the noise is turned off and the music is turned on.

We’re listening to Coldplay’s The Scientist from their album A Rush of Blood to the Head. This is where the PI4’s uniqueness may be fully appreciated. That song has a lot of dynamics, but it also has a lot of peace and quiet. Bowers & Wilkins offers the piano a lot of room to shine. Above the piano, the vocals are concentrated and gorgeous. Every component of the music is distinct and heard on its own. The ultimate power is in producing music out of those elements, not in allowing them to hear apart from one another. Then you talk about hi-fi quality, which is something you can do here.

Finally, Active Noise Cancelling is a welcome feature. Low, high, or automated are the options. At low settings, we observe that a lot of noise is suppressed. That, as well as some music. The superb fit is one factor that adds to this. In the ear, the PI4 is sucked. We notice that we have to scale things up and continue to high in a highly hectic setting. It’s completely silent! We’d want to say you could hear a pin drop, but we don’t believe you could.

A bit expensive

We can’t ignore it: the Bowers & Wilkins PI4 is a respectable investment in the field of wireless in-ears. Sennheiser has a model that competes at this price point, but you’ll rapidly find yourself in the high-end category with manufacturers like Astell&Kern, 64 Audio, and Empire Ears. Apple, on the other hand, is a brand that is engaged in this category. This makes the B&W PI4’s job more challenging. With their white wireless earphones, Apple has become an iconic picture on the street. As a result, the British concentrate on the audiophile: those who want to have the original sound of B&W in their pocket. On the way to work or while participating in sports. Maybe it’s because they already own a speaker system from the company. B&W has truly achieved the level of pocket-sized hi-fi thanks to the excellent audio reproduction. With the B&W PI4, you no longer need a mobile dac to get good sound.

A little bag is included to keep your PI4 safe. Keeping cordless Bluetooth in-ears with a wire is now a little more inconvenient than, say, a House of Marley or Klipsch. These are kept in a storage case that also charges the in-ears right away; it’s a lot easier and safer. That is the only criticism we have. We can classify the B&W PI4 under that criteria because it is wireless but still has a wire.


The Bowers & Wilkins PI4 is described as having hi-fi quality in your ear. The brand concentrates on a specific target demographic with these in-ears. They’re worth it, but the headphones – as well as Apple’s AirPods Pro – are available at a lower price. With the current line of head-fi, Bowers & Wilkins confirms once again that they have gold in their hands, as we observed in our reviews of the PX5 and PX7.

Bowers & Wilkins PI4 Review
Bowers & Wilkins PI4 Review
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