Sennheiser Consumer Audio Sennheiser CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls - with Noise Cancellation and Customizable Touch Controls, Black

Of all the audio upgrades I have bought in my life, these earphones were the best $100 I have ever spent. There are only two things I wish were improved or included. First is the battery life. They will realistically give 5-6 hours per charge in real world use. This is from full charge to the devices shutting off from low battery. They charge quickly in the case or even faster with the case plugged in. Still, longer battery life would be welcome. The second is the lack of Adptx HD codec. They only support AAC, SBC, and Adptx LL. The audio quality of these earphones warrants the best codecs and I'm surprised that was not included. With that said, there is little to fault in the sound quality. When I first put them in and paired them, they presented the worse sound I have ever heard from earphones. Even airplane throwaways sounded better. Then I remembered reading another comment about the same thing and stating they needed to be broken in. Being familiar with high end audio I figured I would break them in for two charge cycled. I parked them with my phone and streamed Tidal until they went dead, charged up and repeated. When I charged them up and put them on. I was presented some of the best audio I had ever heard from an earphone. The sound was incredibly detailed, accurate but slightly heavy in the high end. Bass sounded thin but very accurate. This turned out to not be the case. I opened the Sennheiser app and reduced the high end by 3db. That was just what was needed and they smoothed out and sounded very detailed but not hard it edgy like before. As for the bass, I did nothing but listen to several tracks I was extremely familiar with. When the track calls for bass it is there. Tight, controlled, not boomy or elevated as most headsets are, and very deep. In other words they deliver what is in the recording, not equalized to sound bass heavy. The more I listened, the more I heard what an incredible sounding ear buds these are. I did not want ANC. I feel it has its place in certain applications like travel, but I only have these to listen to music. The isolation is very good and minimal ambient noise gets in. Even outside or walking with traffic they seal very well. I hear more audio artifacts from noise canceling that bother me than a little bit of ambient noise. After all, if listening to speakers you hear everything anyway, even in a quiet living room. These are worn often, sometimes 12-13 a day. Phone calls sound amazing and while the mics are not the most noise canceling for cell calls out there, I have only heard a few people afk if I was outside when there was string winds. But all say voice quality is excellent. To get any better audio quality many times more money has to be spent and even in the $400-$500 range I have heard nothing that that is any better sounding. Better than Bose, WAY better than air-pods. This is based on audio quality only. If you MUST have ANC or longer battery life for some reason these will not work for you. If you are looking for unbeatable sound,there is nothing close to these without getting into the over $750 range and up. For $100, these are the audiophile bargain of the year. Will not be sorry if you purchase these.

Sound quality The sound on these things are phenomenal. Even more so for earbuds at this price range. But hey, its Sennheiser. Also, by using the Sennheiser Smart Control app, you can really make these sound how you want. From high bass, to low treble you can really change a lot. It also has the codecs for many different devices so it will sound great on Apple AND Android devices. Mic is decent and never had any problems with people understanding me even on windy high speed bike rides. Touch controls are great and responsive. Just try not to hit them when scratching your ears! One thing to not is that the right earbud MUST be out for use while the left one can be put back in the case. Build Quality: While the case could feel cheap at times as it just made from plastic, its clear to see that money went into the earbuds. They are very well built and fit great for me. While I don't have the largest ears, I found that the normal size worked the bets. They also come with Small, and large size caps. I also recommend twisting the earbuds inwards for a tighter feel. They have stood in during runs, windy bike rides, and vehicles. Battery: Batter is great. I think it gets about 20 hours with he case. You can check battery by pressing the little button on the back. green for high, yellow medium, and red for critical meaning you need to charge very soon. I think you can get about 4 charges with the case but I've had these for about a month now and I've only had to charge these things about 4 or 5 times and I use them for hours! Also. charger uses USB C Problems: While I think these earbuds are incredible, I do have some things I think they could add. Given the price range, I think earbuds like these should have some form of a transparency mode. While I think they have the hardware for it, the software does not support it. Honestly, This is the only area I'd say these things were "lacking". Active noise cancelation would be very nice too for the price but sadly, it is not included. It does have passive noise cancelling and honestly, I don't know the difference. Overall: Overall? Awesome product. These things sound nothing short of incredible and they fit and are built very well. They allow for great customization of buttons and EQ. About as easy to put on as any other earbuds. If you are looking for high quality earbuds, these are it.

The review for: "Sennheiser CX400BT True Wireless Earbuds". Ships from and sold by Amazon.ca. Overall: 5/5 Sound quality: 6/5 Bass quality: 3/5 Functional feature: 4/5 Bluetooth connection: 3/5 Fit in ear: 4/5 Battery life: 3/5 Passive noise cancellation: 4/5 Active noise cancellation: n/a Transparent hearing: n/a Budget friendly: 5/5 Mono/Independent mode: n/a Static noise: barely noticeable Waterproof: -- Delivery: 6 days Purchased time: Jan 2021 Scale 5=best 6=superior 4=good 3=decent 2=poor 1=better than nothing 0=better without it n/a=none sp=depends on individuals or situations --=haven't test, measure, nor paying attention Overall: 4/5 Very good pair, GREAT sound signature and quality. A budget deal for great music earbuds, just like the "Momentum TWS 2". The misleading(my case) playtime description is also just like the "Momentum TWS 2" as well. The lacking of ANC and transparent mode might massively affect outdoor users. Pros: GREAT sound signature&quality(TWS), customizable touch control, budget friendly to music listeners using TWS. Cons: 4hrs battery, no IPX rating, no transparent mode. Sound quality: 6/5 Superior sound quality compare to almost all other true wireless earbuds. Very pleased sound signature that stands out from all other true wireless earbuds. It is not the best sound quality EARPHONES, but I doubt there is any TRUE WIRELESS EARBUDS with a better sound quality than this one.(Only heard the momentum 1&2 TWS might have better sound quality.) Bass quality: 3/5 There is decent bass, just not for bass-head. Functional feature: 4/5 Have all necessary features for indoor music listening. Customizable control feature could be very enjoyable for using experience. Bluetooth connection: 3/5 Decent, not strong compare to others. Only used for music listening, not tested for lagging. Short pauses occasionally happens while playing l, last 0.3-1s each time. Fit in ear: 4/5 Comfort in general. Decent secure fit. The size of the buds itself could be a little big, no issue for long time wearing, not recommended for activities with head movements. A little slippery when holding with fingers on the earbuds, much better than the "Momentum TWS 2" on hand due to its square shape. Battery life: 3/5 Decent but disappointed. Unlike its advertised 7hrs for playtime (50% volume), the playtime I tested barely passed 4hrs, could gain another 40mins when just listen to audiobooks. It could be a lemon, or 3, make it 5 if add the "Momentum TWS 2" experience to the list. The white colour I tried got me another 15mins compare to the 2 black colour I've tried. PS: The battery of the case could fully charge the both buds for at least twice for extension. Passive noise cancellation: 4/5 Good seal. When wearing both ears, may hard to identify the contents of speaking. Budget friendly: 5/5 Considering to the similar sound quality with Momentum 2 TWS, the current price is very budget friendly for music listeners who like to have a pair of quality true wireless earbuds. Purchased price: CDN$ 129.95 Review posted: Feb 2021

I wont write a long review. They are just amazing for the price. I have many other different pairs of wireless earbuds from Sony, Bose and Klipsch. You cannot go wrong with them if you dont need active noise canceling. I love the fit, the sound and the price.

Great sound

Habe einige In Ears getestet (im Preissegment bis 150 Euro). Diese Sennheiser haben den für mich bis dato besten Klang. Der Sound ist warm und schön voll. Höhen und Bässe sind nicht betont, so wie es vielfach bei anderen Headsets gemacht wird. Heißt: Wer (einen neutralen) Klang priorisiert, dem sind diese Sennheiser sehr zu empfehlen - vor allem für einen Preis von rund 100 Euro (Stand Februar 2021). Die Touch-Bedienung funktioniert sehr gut. Im Gegensatz zu anderen InEars kann man damit auch einfach die Lautstärke regeln. Bei vielen anderen InEars kann man die Lautstärke meist nur eine Stufe rauf oder runter regeln, hier geht es bei längerem Druck auf eines der InEars stufenlos. Es gibt kein Grundrauschen, was bei Podcasts oder ruhigen Musikpassagen stören könnte. Die Videolatenz (am Android Telefon) ist zu vernachlässigen (für mich kaum wahrnehmbar). Es gibt dennoch Nachteile: Mich störte, dass man nicht beide InEars unabhängig voneinander nutzen kann (der linke funktioniert nicht ohne dass man den rechten verbindet). Der Sitz ist generell gut und angenehm, längere Telefonate funktionierten aber "mit meinen Ohren" nicht ohne dass die InEars durch die Bewegung rausgerutscht sind. Es gibt kein(e Angabe zu einem) IPX-Rating (Spritzwasserschutz o.ä.). Und "Neutral": Die Spieldauer (sprich Akkuleistung) lag bei ca. 66% Lautstärke auf einem Huawei Android Telefon ein klein wenig mehr als 5 Stunden. Die InEars schalten sich automatisch nach einer Weile ohne Tonübertragung ab. Durch längeres Drücken kann man sie wieder anschalten (ohne dass man sie wieder ins Case legen muss). Das passive Noise-Cancelling ist gut (es gibt kein aktives Noise-Cancelling und auch keinen Transparenzmodus) Das Case selbst fand ich entgegen einiger anderer Reviews kompakt und relativ robust. Die Touch-Bedienung funktioniert nicht (wie zB bei den Airpods Pro) durch Stoff wie zB eine (sehr dünne) Mütze.

Con los auriculares CX 400BT es posible disfrutar de una experiencia de sonido de gama alta, ofrece un sonido equilibrado y sobre todo muy detallado co suficiente autonomía. Buena relación calidad precio.