Soundcore Sleep A20 Set by Anker with Comfortable Ear Tips and Wings

UPDATE #3 The second pair are now dying after about an hour of charging. I use them every single night all night so I guess I can't complain. What I am writing is that Anker's customer service is outstanding. Since these are still under warranty they are sending me yet another replacement. I will say again these really are the only decent option when it comes to sleep earbuds, and with there customer support you can't go wrong. UPDATE #2 7/22/25 I moved this back to 5 stars. Anker sent me a new pair and they've been working well for months. I still can't figure out how to completely disable the battery alert alarm but it's not that bad. They get 5 stars because there is simply nothing out there that comes close to these at this price. If you are looking for active noise cancelling earbuds to sleep in just buy these, they are the best option out there. UPDATE 1/9/25 These aren't even a year old and the right earbud is no longer working. They work well when they work but if they only last this long I would not suggest purchasing. I've had these headphones for two nights so far, and they have been surprisingly great. I will update the review if that changes. I have had difficulty sleeping my whole life and am very noise sensitive. I have tried everything to block out noise to sleep. I will keep this review short and to the point, but these are the best sleep headphones I have found. So far the battery life has been great and they've lasted through the night each night. They are very comfortable to sleep with. Not perfect but by far the best I have come across. They are well made and sturdy, but we will see. The one bad part so far is the Anker App. It is so stupid. The earbuds cut out when I use it, and if you want to listen to white noise for sleeping and then switch to a different app to read or something the noise stops. It is completely useless, and almost caused me to return them. Whoever makes these apps should have them field tested before selling the product. HOWEVER I just simply use a white noise app on my phone and since it is connected via bluetooth it works great and you can just circumvent the app. Anker should make these earbuds for nothing but sleep. Don't try to make them regular everday earbuds that CAN be used for sleep, just make them for sleeping. Removing a star. So while you are sleeping if the batteries die the headphones have an alert to tell you this. So they wake you up to tell you the battery is dead rather than just let you sleep.

They are great!...until they're not. Sounds weird to say but these were an upgrade from a pair of Bose Sleepbuds. The improvement was 100% because, well, Bose's earbuds were such a disastrous failure since they had a one hundred percent failure rate that I did the sensible thing and purchased a "great for the money-just happy for the business" brand of sleepbuds, Anker. For the first year they were absolutely stellar: good battery life, tons of features, comfortable to the point of not being sure whether they had fallen out, just awesome. ....and then it happened. It started with the right ear bud not charging to 100% after like SIXTEEN HOURS charging. As with most consumer electronics I was told "just hit the reset button". Ok, I did that until I was resetting these earbuds EVERY TIME I USED THEM. There's that 100% failure rate I experienced with Bose. But I figured it is simply a concept flaw; you can't get a battery small enough to make sleep buds withstand side sleepers and still take the rigors of daily recharging for very long. I got used to the nightly reset-routine until then the problem spread to the left earbud. Now both earbuds required a reset for them to begin to charge. As if that wasn't bad enough, the left earbud developed what I have now found out is endemic to these earbuds: your left earbud will not charge past 50% if at all after right around the time your warranty expires. Yes, the ol' "make em' good but not too good" design philosophy to get you to replace. So there I was again with a pair of overpriced earbuds that blow white noise into your ears for two hours a night. Anker was incredibly helpful; "clean your contact points".....yeah, didn't try that a year ago but thanks. Oh, but their record-keeping is impecable "regret to inform you that your warranty just expired today. Here's a 15% discount code. Buy more of our stuff" So, I don't know if it's simply a concept that is not ready for market or what. They truly need to consider either powering them with a plutonium battery or not at all if what they want is to make the battery that small and for it to last any meaningful amount of time. Fool me twice, shame on me.

UPDATE: After making my original post Anker contacted me and offered a full refund. With the excellent customer service it may be worth the gamble to see if you get good units. I'll probably be back for the A30 Sleep series whenever that's released, I hope those work better. These are great earbuds.... for the first 2-3 months. Truly the best sleep headphones I've ever used. Most of the others are cheap ones from Amazon. The Anker branded sleep headphones were the first ones I found that didn't have a very loud voice yelling in my ear "CONNECTED", "DISCONNECTED", or "POWER OFF" in the middle of the night waking me up. The fact that you can completely disable all sounds on these is great. They're comfortable for me as a side sleeper, but everyone is different, so YMMV. Now the really bad. I've had 2 sets so far, both lasted almost 3 months before the right ear is nearly inaudible. Both sets had the right ear gradually getting quieter and quieter, it's not related to ear wax build up or anything as I've regularly cleaned them and when taking them out of the case the volume is noticeably louder compared to the next morning when it is impossible to hear anything, the only way I know it's still connected is that the touch button still works and the app reports ~80% battery, my audiobook app turns off if I don't shake it every 15 minutes so most of the time I'm asleep within 15 minutes, so these get very little active use and are in standby most of the night. I got my first set replaced with warranty fairly easily, which is really the only reason they get 2*. But for the money these should really last longer than 3 months. The S10's I had before lasted over a year before one of the ears died, which isn't amazing but for that year I had the best sleep I've ever had so the higher price point is worth it, but there's a big difference between the cost being ~30 cents per day to over $2/day before they're not functioning. At this point I don't recommend these, if they worked well for more than a year it would be good but the fact that I've had 2 units fail the exact same way is disappointing. I figured the first time it happened must have been a fluke since very few reviews say anything like this happening, but to have 2 in a row with the exact same problem seems like possibly a manufacturing defect.

****6-MONTH UPDATE/EDIT: Shortly after my original review in 11/2025, the company reached out to me and ended up sending me a new pair of earphones for free! I really appreciated this and find their customer service to be phenomenal, but I wanted to wait awhile to give my final re-review. Unfortunately, my new earphones do still have the same issue as the previous pair (although I've incidentally discovered that the sound glitching is less frequent when playing a sound on Spotify or my personal downloaded library than when playing a video on YouTube, so that was a little helpful). At this point I feel certain this is due to the battery life, as the glitching/cutting out sounds don't occur until a few hours of play, and this is apparently a known problem with certain earphones. I've tried a few other things with no improvement, such as disconnecting/forgetting the Bluetooth connection and then re-pairing them, and also cleaning the sensors every couple days. No change. Again, this is an issue that I can't personally get past. Any sound disruption will wake me up, even if it's incredibly brief or small, so I've stopped using the earphones and have gone back to earplugs for now. If Soundcore or any other company ever discovers a way to completely alleviate this tiny problem, I will buy their product in a heartbeat lol. I would still highly recommend these sleepbuds to most other people, especially because I know I'm not an average person and everything else about the product is a 10/10 I think. (I've changed my rating from 3/5 to 4/5.) ****Original review: These were incredible for me at first. But after about 4 months of using them every night, I have very mixed feelings. I have a sensory disorder and have had insomnia for most of my life, as I'm an extremely light sleeper even when sleeping alone (I'm talking like combat-PTSD levels of hyperarousal), and in my 30s it's reached a point where even earplugs and a loud fan blasting at my face aren't enough to keep me asleep most nights. So after some digging online I found these, and they seemed to have overall better reviews than the Ozlo sleepbuds (the only other ones I considered) in terms of cost-benefit ratio. My thing is, when they DO work, they're absolutely perfect for me - the noise cancellation is really good, they aren't uncomfortable even for my super small ears, and they stay put throughout the night. I haven't had any issues with touching them in my sleep and accidentally switching them to the dreaded "sleep mode" like I'd seen others report in their reviews. When I use the bluetooth mode to play some white noise, I can even sleep in the same bed as my partner some nights without his snoring waking me up. These are all things I was really skeptical of/worried about before my purchase, so it felt like a miracle initially that the buds worked so well. However, after about the 4-month mark, it seems like there's something off with the audio, which is my main complaint. I always listen to the same white noise video on YouTube through the night, but I've started noticing a weird glitchy-sounding beep will play every couple minutes or so, and since my brain is insane it will ALWAYS wake me up, every time. I know these earbuds are the cause, because I don't have this problem with my airpods. The noise is hard to describe but it's just a little break in the audio that sounds like a chirp/glitchy sound, and it happens often enough that after about a week of trying and failing to just power through it, I stopped wearing the buds most nights and switched back to earplugs. I looked around online and on the Soundcore website about this being a potentially known issue that you can troubleshoot, but I didn't find anything unfortunately. This issue might not be a dealbreaker for some people with less severe hyperarousal/insomnia, but for me personally it defeats the entire purpose of the earbuds. I considered just buying a new pair, but then remembered they cost me almost $200 at the time. 😭 Honestly, this issue might not even be that bad for me if it wasn't for the cost. I just can't justify dropping another $200 on a few more months of good rest, in this economy lol. I guess for now I might save up and buy one last replacement pair, or maybe try a different brand.

Let me start by being honest; Amazon's not letting me review the new A30's here but here's my review of both A20's and the new A30's. This is posted on SoundCore's site as well: First a couple of back story statements: Amazon is now not taking reviews of the A30's unless the buds are purchased through them and since I was part of the Early Bird KickStarter and got them directly from SoundCore I couldn't do a review there (where most of the reviews are posted and viewed). It seemed that the majority of reviews on Amazon were from first time SoundCore users. I've had six months of A20 use and the same amount of time communicating with SoundCore's Support Team and Tech Team so I have some viewpoints on that. As a note I was a Bose SleepBud user for three years and experienced all the down sides of their difficulties with battery, range and software glitches that eventually drove them to decide to discontinue the product. Here's my take going from the plus side to the somewhat negative side: For those of us who had good experiences with the A20's the shift to the A30's is far easier than it would be for a first time user. The app layout is similar with some changes that take into account the ANC tech and the ability to store more than one "Land" sleep sound whether white noise or snore blocking. While this seems a little clunky unless you want to continually change sleep sounds night by night I don't see any issue with this. The setup is quite easy as were the A20's and pairing whether using the app or the Bluetooth setting is simple. The app's navigation is similar to the A20's with some needed additions to the Sound Scape variety for pre-sleep. As with the A20's the range of the buds from a phone is excellent so if you have to head to a distant bathroom or elsewhere the long range really helps. The whole reason for switching from the A20's to the A30's was the addition of ANC to the product. The A30 bud is slightly larger than the A20 but certainly still low profile and comfortable and permits side sleeping without issues. The reviews mentioning the lack of sensitivity with the touch adjustments for sound level and switching from Bluetooth to Sleep mode may be due to the need to contact the bud DIRECTLY on the flat face rather than even slightly off center. A big complaint from reviewers on both A20's and A30's is the sudden transition from Bluetooth mode to Sleep mode that's jarring and tends to wake you up with the software detects sleep. I think this is being addressed but is a definite downside for both devices. Again, similar to the A20's. I've communicated some of my concerns about the transition from A20's to A30's directly to SoundCore's teams but my chief complaint is the difficulty in SoundCore's verbiage on the directions for the products. Simple is good and my experience with both the ear buds as well as other SoundCore speakers is that their directions use quite confusing wording and in general need to be far more clear and use simple statements that don't require trying to figure out what the terminology means and what they're intended to do. Finally, I've read reviews that are critical of the ANC function in terms of how much noise the A30's is blocked out. My experience is that the ANC is not nearly as effective as either over the ear cans or competitors' like Bose's noise cancelling but in such a small package that's very comfortable for sleep positions you're not going to fit total ANC in the bud. It does reduce background noise but is certainly not capable of true ANC as of right now. Now for the positive; In the six months I've dealt directly with SoundCore their Support and Tech teams are excellent. In a business that normally does not have the ability to directly contact the manufacturer by phone the Tech team is accessible and very helpful. SoundCore Support is email only but VERY responsive in a short time frame and is very patient and helpful. I know this may seem a side issue but for anyone that's experienced product and setup direction issues being able to get quick responses and tech guidance is a game changer. SoundCore is pushing hard on brands like Bose's product placement and is now in both Verizon stores as well As Costco. With the added customers i'm hoping that the customer service gets expanded and can keep up. I know that SoundCore is working on software updates and some technical tweaks and that should help but right now not sure that switching from the A20's to the much pricier A30's is necessary. For first time SoundCore customers the A30's function well and have some features that make it worth the bucks with the proviso that SoundCore will continue the software and direction improvement.

Decent product, needs some design tweaks: (1/5) Security: This is the third morning I’ve woken up to with the left earbud lost somewhere in my bed, which prompted the need for a review. I don’t know why only this one falls out. I am always sure to twist it into its “secure” position when I go to bed, but many times in the middle of the night I’ll wake up and have to re-twist both back into place. I’m using the small wing size because I have small ears, but I will be testing the medium and large sizes soon and if there is a positive change I’ll add it to the review. The earbuds are secure when I’m going about my daily activities though, so maybe I’m just too aggressive of a sleeper for this design? (2/5) Comfort: The design really wants to work. It has a specific shape so that it plugs into your ear and twists to stay secure within the folds of your ear. It’s a really great idea but it could use a little improvement. I don’t know how to describe this, so here is where photo #3 comes in. This part of the earbud early digs into my ear when I am sleeping on my side. It is always a battle to see what specific head position and slight downturned angle I need to be in so that 1) the earbud isn’t digging in painfully, and 2) the earbud isn’t squished in such a way that all sound is cut off from it. I’m mostly a leftie side-sleeper, so this is frustrating. When I am not laying on my side and applying pressure to them, the earbuds are quite comfortable and lightweight. (5/5) Fit: This is the first time I’ve seen extra small tips for an earbud. Thank you. I have small ears and it is always a struggle to keep earbuds in, even with the small tip options. There are a variety of tip option for sound blocking or no sound blocking (no extra small for the non-sound blocking tips though, a little saddening). There are also three wing sizes (small-large) for the fit inside your ear. I am currently using the extra-small tips and the small wings. (4/5) Charging Case: The case is a little big so it doesn’t fit on my 3-part wireless charger, but it makes up for it in battery life. The lid sort of slides open in one spot, which is cool when you can see what you’re doing, but I normally put my earbuds in in the dark so I’m always fumbling to find the perfect angle to slide the case open. I wish it had a pop-open design like the Anker Liberty 4 case I have. Also, sometimes the magnet in the case doesn’t grasp the earbuds to pull it to the exact angle the earbuds need to be in to charge, so there have been a few nights where I’m left with dead earbuds. (5/5) Charge: The battery life is very impressive. I can sleep through the night using either their white noise feature (which supposedly uses less power) or their Bluetooth feature (which supposedly uses more power) without my earbuds dying in the middle of the night. The charge of their case lasts a good few nights as well, and only needs a few hours to recharge, which I’ll usually do during the day. (5/5) Sound: I’m in love with the white noise options on the app. I really wish I didn’t need to be connected to the earbuds to hear these specific sounds, because I’d love to play my settings out loud as well. The noise cancelling part is also very amazing. It allows just enough noise in that I could hear my partner speaking before we go to bed, but I won’t be able to hear any noises from him at night. I actually can’t even hear my alarm going off in the morning, which is ok because the app does have an alarm clock imbedded (although I wish the alarm sounds and volume were more customizable). Worth the money: I’d say so. Especially since I bought it on sale. I wish it was cheaper still, but I guess extra battery power costs more so I understand. My problems may be unique to me since I have small ears and roll around a lot. I’m very much used to buying designs that supposedly work for everyone but then I’m the outlier of the lot. Overall, I like it and I’ll keep using it. I’ve grown attached to the white noises and only ever want to fall asleep to those specific sounds. I’m hoping that I can experiment with different sizes and see if the problems I’m having will go away (but if there is no update by tomorrow then know I’m still struggling). I may end up modifying them myself with padding or silicone to better fit my ear.

I’ve been using these for over a month, so I now feel like I can give a proper field report about them. I’m highly satisfied overall. For reference, the earbuds I used for sleeping before this were the 1MORE ComfoBuds Mini, and I was highly apprehensive about switching to dedicated sleep buds because it would mean losing active noise cancellation. However, 1MORE seems to have discontinued the ComfoBuds, and since those have pretty severe reliability issues, I decided to take a chance on these Anker buds. I have not regretted it. For starters, they’re very comfortable, and they STAY comfortable. With the ComfoBuds, they’d feel comfortable when I first put them in, but I’d be waking up a couple of hours later wanting to rip them out because of how much my ears hurt…that is, if they hadn’t already fallen out on their own by then. The Ankers feel unobtrusive all night, and I’ve worn them for 7-8 hours sleep sessions and still not woken up with ear pain. Also, they don’t fall out. Like, ever. That’s especially impressive because I move around a lot in my sleep, but never once have I woken up to find them scattered across my bed. Obviously fit is super subjective and everyone’s ears are different, but they worked well for me. Noise isolation is good. I don’t think it’s as amazing as Anker makes it sound, but I’d say that it’s about on par with how the ComfoBuds blocked noise with ANC on (which admittedly wasn’t the world’s strongest ANC). Really, the ace up Anker’s sleeve is the sleep sounds. I’ve used many headphone apps in my time, and Anker’s is by far the best. It’s well-designed and lets you mix your own sleep sounds, which I loved. There’s also sleep tracking and other features. I appreciate that you don’t actually HAVE to use their app — you can just cram the buds in your ears and listen to your usual content or sleep sounds — but I’d recommend it, just because it works really well. The in-app sleep sounds have successfully blocked out snoring, loud conversations, and vacuums when I’ve used them. Sound quality is…meh. But I mean, that’s not really what you buy these for, right? Some sacrifices have to be made for their small size. In this case, the sacrifice is that there’s basically no bass response (I listened to a thunderstorm soundscape and could barely hear the thunder). They’d be fine for podcasts or quiet music, you just wouldn’t want to use them as regular headphones when it’s not bedtime. I’ve had a few minor connectivity issues, mainly regarding one or both earbuds disconnecting when I lay on my side in a certain way. I assume that the pillow is blocking the Bluetooth signal? There’s ways to circumvent this, like putting them in a special sleep mode that doesn’t require Bluetooth, but then you’re restricted to a limited selection of sounds and you can’t use the sleep-tracking function. Usually I can just shift slightly and they’ll reconnect, so it’s annoying, but not a huge deal. TL;DR: These are comfortable, smartly-designed buds that successfully block out disruptive noises as long as you’re playing some kind of sound through them. Sound quality is acceptable, and though they have some minor connectivity issues, it’s not enough to ruin them. I would highly recommend these over using regular earbuds of any kind.

I've been using the Bose sleep buds for a few years ago, so I can sleep while my husband snores. Very loudly. Anyway, they'd started messing up, volume had gotten quite low so they were no longer masking the snoring. IT WAS SO LOUD. I slept on the couch for most of the last 6 months. Or longer, I don't even know anymore. So off to Amazon I came, looking to hopefully buy a new pair. Seems Bose no longer makes them? Maybe? At any rate, I couldn't find them, but I stumbled across these. For much, much cheaper than the Bose ones. Figured might as well give them a try, so Santa got them for me for Christmas. These are absolutely lovely. They can go louder than the Bose ever did, I do not usually use them at 100% though, but every once in a while... I like the sleep tracking feature (which is bizarre to me with how that even works, but it seems pretty true when I look over it) The snore masking sounds are GREAT! I do think it's neat that you can connect them on bluetooth and use them as regular buds (I do not do this, however, but it's a nice feature to have nonetheless.) I do wish the sleep timer worked a little different. I have mine set to turn off 1 hour after falling asleep, sometimes I wake up in the morning and they're still playing - makes me paranoid I won't hear my alarm, or the baby on the baby monitor through the night. With the Bose, I just told it how long to play (2 hours for me) and it just shut off after being on that long - these cannot be set that way. The only other thing that bugs me a bit is sometimes it seems the app messes with the sound on my phone. I have no idea how or why, but often I find the sound for my baby monitor (Nanobebe Aura - it only has an app on my phone, unfortunately) is really low while using these - even with the A20s in sleep mode. So far it has not been an issue - she's 2 and has been generally a really good sleeper, luckily) - but at some point it could be, and that worries me. Overall though, these work fantastic, and I am able to sleep in the same bed as my husband again! UPDATE 1/24/2026: After about a year or so, I have encountered a problem. The left bud will not charge past 50%. (Upon reading other reviews, this seems to be an issue with firmware update 1.57, and I have checked and I do indeed have this firmware update.) After keeping an eye on it for several days, and doing all the troubleshooting, I emailed customer service. I explained the left bud wasn't fully charging, but the right one was. They emailed me back within 20 minutes with troubleshooting steps, and instructions on what to do if the troubleshooting did not resolve the issue. The issue did not resolve, so I emailed them back stating so, sending screenshots and the information they requested. 30 minutes later I received an email that they are sending me a new pair. Regardless of this issue, I am not changing my original rating of 5 stars. The buds do still work fantastically, even with the left one not fully charging (it is dead upon waking up, however once I'm asleep this is not an issue) and their stellar customer service deserves the 5 stars. Will update again upon receiving the new pair. UPDATE 2/25/26: The new pair is working flawlessly. It did indeed come with firmware update 3.something. Everything is charging exactly as it should, and the case is only needing to be charged maybe once a week.

Jag älskar dem! Har använt dem i ca två månader nu och vilken förändring för mitt välbefinnande. Bor vid en plats där folk ofta festar på nätterna på sommaren och min man snarkar som ett sågverk. För första gången på länge väcks jag inte av fest, musik eller makens snarkningar. Jag har läst något om att det ska komma några med brusreducering och de är jag väldigt sugen på att pröva. De är inte de jag använder för att lyssna på musik och de fungerar inte för att prata i telefon, men för att få hjälp med sömnen är de enastående!

W tych słuchawkach można naprawdę wygodnie leżeć na boku. Nie spodziewałem się tego, mimo obejrzanych przeze mnie recenzji, bo nawet małe zatyczki do uszu, które posiadam, wywierają presję na ucho. Tutaj prawie tego nie ma. Wreszcie mogę wygodnie słuchać audiobooków przed snem! W zestawie, oprócz standardowych gumek, są też takie przepuszczające powietrze (i dźwięk). Te są nawet wygodniejsze od tych tradycyjnych, chociaż dźwięk traci nieco na jakości (jest o wiele mniej basu). Do podcastów czy audiobooków jednak basy nie są aż tak potrzebne, liczy się wygoda. :) Gęsty stuknięciami w słuchawkę są bardzo przydatne, choć trzeba się do nich trochę przyzwyczaić (musiałem się nauczyć w nie stukać mocniej niż się spodziewałem). Ogółem, jestem bardzo zadowolony z zakupu i polecam te słuchawki każdemu, kto lubi sobie czegoś posłuchać przed snem.

I love these, I've used them for at least a year now almost every night. They fit very well, they are comfortable when side sleeping and the sound quality is great!

I have used these headphones every day since I got them. They are comfortable enough to sleep in, which is a priority for me because my husbands snoring keeps me awake. They are easy to use, I love the case. Would replace immediately if I lost them

Hago esta reseña viniendo de unos Anker Soundcore A10 (el modelo del año pasado) que si se les podía achacar algo era la poca duración de batería en modo "bluetooth". Sin duda, este nuevo modelo corrige los problemas de la versión anterior. Será inevitable comparar ambos modelos en esta reseña (A10 y A20). Tengo acúfenos (tinnitus) y dormir sin algo que enmascare esos molestos ruidos es bastante complicado. Habiendo pasado por los Bose Sleepbuds, Soundcore A10 y como me ha crecido barba esperando los Ozlo que nunca llegan a Europa (iba a ser mayo, luego se suponía que julio, ahora dicen que a finales de julio), decidí probar estos A20 viendo la buena crítica en cuanto a batería. Llevo algo más de un mes usándolos y creo que es tiempo suficiente para poder opinar sobre ellos. CAJA: Los auriculares vienen en una caja de pequeño tamaño, ideales para llevar de viaje. Se sujetan a la caja magnéticamente. Decir que la forma de colocarse no es la más natural, y los primeros días, cuando te despiertas y los quieres guardar en la caja, no encuentras cómo deben colocarse (entre dormido que estás, no te enteras mucho). Una vez colocados en la caja, se empiezan a cargar. Se puede ver el estado de carga mediante tres led en la parte frontal. La caja en sí se abre deslizándose hacia arriba y en mi caso tiene tendencia a resbalarse de las manos. AURICULARES: Los auriculares son suaves, ligeros, pequeños. Se ajustan perfectamente a cada individuo. El fabricante incluye varias gomas para que a prácticamente todo el mundo le encajen a la perfección. Decir que se incluyen muchos tipos de pad de silicona muy suave y blandita (realmente se nota super esponjosa) y al colocarlas en tus oídos, no notas dolor, presión o nada parecido. Me encanta que casi ni se nota que los llevas puestos. Es posible que haya que combinar un pad de tamaño distinto para cada oído, por lo que recomiendo no precipitarse e ir probando distintas combinaciones hasta encontrar con el indicado. En mi caso, no tuve que hacer ningún cambio y estoy usando los que vienen por defecto. Sin embargo, estuve probando un rato. Como digo, los auriculares son ligeros, mucho. Puedes dormir perfectamente de lado que no sobresalen y no duelen (a veces con el modelo anterior, los A10, me despertaba con algo de dolor y presión). Esto no ocurre con los A20, la silicona es tan suave! MODOS DE USO: Los auriculares tienen dos modos de uso: Bluetooth, para lo que necesitaremos el móvil cerca, y el modo "autónomo" donde no necesitaremos el móvil y los auriculares reproducirán un sonido en bucle mientras los llevemos puestos. En este último modo, el sonido se carga en los auriculares y no necesitaremos el móvil cerca. Además, la batería durará mucho más tiempo. El modo Bluetooth por contra, reproducirá lo que estemos escuchando (música, podcast, ... ). Por contra, este modo reduce bastante la duración de la batería. En este punto quiero decir que si bien el modelo anterior la batería no duraba más de 4 horas en modo Bluetooth, en estos nuevo A20, siempre me despierto y queda alrededor de un 15% de batería (decir que duermo sobre las 7 horas) por lo que creo que alcanzarán unas 8h tranquilamente. Lo escucho a volumen bajo, bastante bajo, lo suficiente para camuflar los sonidos que escucho por culpa de mi tinnitus. Otro punto a tener en cuenta es que la biblioteca de sonidos que se ha incluido, además de ser mucho más amplia (tenemos todo tipo de ruidos: ruido blanco, ruido rosa, sonidos de olas, arpas, ...) son de mucha más calidad. En los A10 era un sonido de 20 segundos que se repetía en bucle y se notaba mucho cuando se terminaba y empezaba de nuevo (lo cual, ponía un poco nervioso dicho sea de paso). En estos A20, lo he probado y los sonidos son más largos y por lo menos en los que he probado, no escucho ese cambio. El modo que uso yo es el Bluetooth. Cada noche escucho Calm, donde hay melodías infinitas o playlists de 8 horas. Según lo que me apetezca, reproduzco una u otra. Voy cambiando, así no me aburro siempre de escuchar lo mismo. APLICACIÓN MÓVIL: La aplicación móvil ha sido rediseñada para estos A20, de manera que es mucho más completa. Mantiene los dos modos que he mencionado antes (Bluetooth y autónomo) pero se han añadido dos cosas: análisis de sueño y playlists para modo autónomo. Empezaré por este último, pues se pueden añadir varios sonidos de los incluidos en la aplicación a modo de playlist. No lo he probado pero he visto que lo permite. Decir que tampoco se pueden subir sonidos nuestros, es decir, si queremos usar este modo, tendremos que usar los sonidos que se incluyen en la aplicación únicamente. Por otro lado, el análisis de sueño (otro más, junto con el del Apple Watch y el RingConn) te indica las horas de sueño, tiempo de sueño profundo, etc. Un detalle curioso es el número de veces que nos damos la vuelta y el porcentaje de tiempo que hemos dormido de cada lado (derecho o izquierdo). No deja de ser curioso.Mediante esta app, también podremos actualizar la firmware de los auriculares cuando haya uno nuevo. En mi caso han llegado 2 actualizaciones. BATERÍA: Aunque lo he comentado antes, una de las cosas que más me ha gustado de estos A20 y que sin duda son una gran mejora respecto del modelo anterior, es la duración de la batería. Ahora puedo escuchar durante toda la noche lo que yo quiera, sin tener que ir a los sonidos incluidos en el dispositivo (y que insisto, han mejorado mucho). Creo que los reviews que he leído que se alcanzan 9 horas con la batería son bastante reales. Es cierto que en los A10, al cabo de unos meses la batería se degradaba con bastante facilidad, veremos qué tal va en estos. Decir también que la caja se carga mediante USB-C (no dispone de carga inalámbrica). CANCELACIÓN DE SONIDO: No, estos auriculares no disponen de cancelación de sonido. Sí que es verdad, que debido al diseño de las almohadillas (pads) puede haber una falsa cancelación de sonido. De hecho, se incluyen algunas almohadillas con un pequeño orificio que deja pasar el sonido, de manera que si tenemos niños, bebés que pueden llamarnos por la noche, los escuchemos (bueno, a priori, porque yo cuando duermo ya se puede caer el mundo). En cualquier caso, el aislamiento es bastante notable. Yo vivo en una calle con bastante tráfico y debajo hay un restaurante y con los auriculares, la melodía y demás, no escucho ni los coches ni la gente al salir del restaurante. VALORACIÓN: Sobresaliente. Creo que hoy por hoy son los auriculares perfectos para dormir. Ya digo que debido a mi problema he pasado por muchas marcas distintas (Hoomband, que como me muevo mucho se mueve la cinta, Bose Sleepbuds que por el precio que tenían acabaron siendo un fracaso a nivel de batería, Anker Sleep A10 que fueron un primer paso para entrar en este mundo y estos A20 que son perfectos). Me arrepiento de haber comprado los Ozlo, que posiblemente sean un muy buen producto pero a nivel de precio, nada que ver con estos A20, y eso que tampoco son baratos. De hecho, un factor negativo de estos A20 es el precio, creo que es algo elevado. Sin embargo, en mi caso, es el precio que hay que pagar para dormir bien y bien invertido está. Sin duda un producto muy recomendable!!