Review on 💭 White Sennheiser CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones with Noise Cancellation and Customizable Touch Controls for Music and Calls by Lild Zimmerly

Let's get the obvious out of the way: these headphones are larger than expected and heavier, partly because of the 7mm driver (like Sennheiser's more expensive Momentum range). but you won't care about size or weight because they just sound so, so amazing. These 7mm speakers really make amazing sound, better than any wireless headphones I've tried and cost around $100 at the time of purchase. it has better "sound quality per dollar" than anything I've tried. But there are some odd design choices. The touch control surface on the outside of the large device is super responsive (even a quick touch of my hand can pause, much more sensitive than the Airpods Pro, for example). On the other hand, you can use it to control the volume, which is a bit fiddly due to the sensitivity. For all the sound quality, I found that I had to turn the volume up on both the iPhone and Windows Bluetooth PC than the other headphones (in Windows go to Sound in Control Panel (under Hardware and Sound)), highlight your headphones, click properties and select the Enhancements tab, Check Volume Balance and click Apply to enable this helps a lot). Earplugs give you good isolation from the outside world (known as "passive" noise-cancellation), although of course you'll now hear every breath and gurgle coming from your body, just like you would with any closed-ear device. Even with a Bluetooth 5.0 connection (they support up to 5.1) on a PC, the BT lag is still there; this is clearly noticeable when watching videos and sometimes also during video conferences. The buds stick out of your head and are heavy, so wearing them for a long time causes pain in the ear canal, but never much pain. The ear tips are silicone, but less flexible than other manufacturers: I usually wear medium ear tips in other headphones, but they seem too big for my ears; small felt too small. I can invest in Comply Foam for the first time. The earbuds support SBC, AAC and aptX, which is convenient for iOS or Android users. The quality of the microphone is average: it's quite good, but not as good as the Airpods Pro, and clearly not the main focus of the headphones. You'll be fine, but expect to have to repeat it occasionally, as with almost any wireless earbud. I also missed the automatic switch-off on many other modern headphones; They just keep playing when you take them out (luckily, most of the time, due to the super-sensitive touchpads, I accidentally stop when I take them out!). the ports in the case are just behind the earbuds; while the ribbed surface directly touches one of the ear folds. When you push the earcup all the way in, you put a rough surface directly on your ear. Sennheiser could have just put that on the back of the block and let the smooth plastic touch the ear, but they didn't. You'll get used to it, but it's just an unnecessary design decision. The connection is quickly in the bud with verbal feedback. Battery life is as expected, easily lasting around 6 hours; the case may give another 12-13. It takes longer to charge than Airpod Pro; It is worth charging for a longer break than other products can be charged in just a few minutes. The case has a USB-C port, but the included cable is tiny; Add regular length to cart when you buy this. There's no wireless charging option in the case, well. The case is larger than expected, slightly heavier than the Airpods Pro case, and a bit awkward to put in your pocket due to its rectangular shape and width. There is an auxiliary hinge at the top that keeps the top open, something else should be tried. Sennheiser has an app for iOS and Android and it's a must. This allows you to update the firmware to version 2.13.0, which will greatly improve the connection speed. You can customize almost all click patterns; I added "Play Pause" for the right ear, not just the left. It also lets you save different EQ profiles (3 bands only, so a little rough, but better than nothing; there's a push and slide interface too, but it's really just a 3 band layer). Profiles are inserted and can be changed in real time via the app, even when listening to a different source (e.g. using your phone to adjust the equalizer while listening to your computer). The app also lets you control connections; As with most BT devices, you can't connect to more than one hot spring at the same time (aka no multipoint connection), and switching is still done manually (Apple Airpods ecosystem is more automatic and Bose has 2 sources done a good job ). switch between them instantly and easily). These aren't athletic buds: they don't hold up at all (to my ears) when moving, and have a water/sweat protection rating of 0 above normal (a little would probably be fine, but during a hard workout they are). not fully protected from salty sweat) . The size of the earbuds, the sound quality is amazing, way better than what I expected from a bluetooth connection in particular. by price. The Master and Dynamic have a similar pair that come down to around $100 in price and Yamaha has a good pair at that price point with similar specs, but after trying them all I'm willing to make the odd design choice for this one clean thing to accept Sennheiser. Sound.