I’m in my early 50s & have mild hearing degradation; my wife is in her early 60s & suffers from moderate & noticeable hearing loss. We already tried some earbud-style “personal hearing amplifiers,” but found they yielded an unnatural, overly processed quality to voices in particular—the one thing both of us struggle with the most during conversations & TVs/movies. Then along comes these hearing aids, with a Sennheiser pedigree to boot, so we thought we’d give them a try before biting the bullet & sinking the equivalent of 3-4 mortgage payments into a set of prescription aids. All I can say is…WOW, these aids totally deliver on their promises! Unboxing is straightforward. You get a USB wall charger, charging cable, 3 sets of ear tips, a charging case with cleaning brush, zippered pocket case, & six “wax guard” applicators along with the hearing aids themselves. The Clear Slims have a traditional hearing aid form factor with a behind-the-ear stem attached to a forming wire that feeds down into the earpiece. The behind-the-ear control stems are shockingly thin compared to traditional hearing aids we’ve seen & will likely hide neatly behind all but the tiniest outer ear (like my wife’s).Each stem has a single button that is easy to find by feel alone—thankfully it presses easily so you don’t feel like you’re dislodging the aids while operating them. Unfortunately, the forming wire and earpieces are mostly silver rather than flesh-tone which might be an issue if you’re a bit self-conscious about wearing hearing aids. The clamshell charging case has a push-button closure to keep the case secure/aids protected. There is a small power LED at the back of the case while all other LED status indicators (battery level, charging, & pairing indicators) are on the stems of the hearing aids. The case is cavernous, supposedly to accommodate a drying capsule as well as the hearing aids; this is mentioned in the manual, but not pictured, so I don’t know what that solution looks like or what drying capsules are recommended (the FAQ simply says they’re available from a “hearing care professional”). To get a personalized sound profile installed on the aids, you need to use Sennhesier’s companion app. The app requires you to have or create an account, but once you’re in, the setup wizard is very user-friendly with easy-to-understand instructions/easy-to-follow pictures that guide you through everything from fitment to pairing to sound adjustment including tweaks for volume as well as clarity. The sound profile is saved to the aids so you don’t have to be near your phone (or connected to it) to leverage the adjustments you’ve made. You can tailor the sound further in the app by mirroring sound levels in both hearing aids or balance levels separately. There are also advanced sound controls including a 3-band (bass, mid, treble) graphic EQ & a wind noise reduction toggle. True to the Sennheiser name, once you feed the Clear Slims BT music from a phone or DAP, you are treated to an articulate, detailed, & imminently listenable musical performance. I would characterize the sound as leaning towards neutral/bright, similar to the “Sennheiser house sound” I’ve heard with other Senny headphones/buds. Bass extension is capable but isn’t as chest thumping as you might enjoy from some high-quality earbuds or headphones. Still, they offer an engaging & pleasant-enough experience that you can let the Clear Slims serve double duty if you want to spin up some tunes without changing out your hearing aids. You can even use them for phone calls just like regular BT earbuds–the dual mics on each earpiece do a great job of picking up your voice so callers can easily hear you, while on-ear controls allow for call answer, reject, & hanging up. The Clear Slims have two sound modes that can be toggled in the app or on the aids themselves: Automatic & Live Music. We don’t have any concerts on the docket for several months, but I cranked up a live recording on my home theater & it seemed as if the Live Music setting attenuated some of the harsher upper registers of human voices & offered less aggressive overall amplification. There is a third sound mode for TV which routes audio from your TV/receiver directly to the hearing aids, rather than amplifying the sound coming from the speakers, but it is only available with Sennheiser’s TV Connector (currently $349 on Sennheiser’s website). It looks as if the TV Connector for the Clear Slims is not the same as the one used for their other TV audio products so a separate purchase is likely going to be necessary even if you have already invested in a Sennheiser wireless TV audio product. Finally, the big question of the day is how well do they work as hearing aids…in a word, wonderful! The Clear Slims do not seem to *unnaturally* boost or target specific frequencies to the point where sound becomes distorted, overly processed/tinny, or unrealistic. I don’t know what kind of voodoo Sennheiser uses to add both volume & clarity without feeling like anything is missing or overblown, but the result in use is simply an abundance of natural, enjoyable, & intelligible sound. In the evenings, I can now turn the receiver down a full 10dB & my wife can PERFECTLY hear & enjoy everything we’re watching on TV…and for the first time in years, I can speak at a normal volume, or even something close to a whisper, around the corner & outside of the room & my wife can still hear my every word…it’s been a game-changer! There are a few gotchas you might want to be aware of, especially given the price point. First, when charging in the case, the hearing aids are held in place by two small but VERY potent spring-loaded plates that cover part of the openings to the charging slots. It’s a very unforgiving design that provides a lot of security while the aids are in place, but proves much more difficult to use than it should be. Until we realized you have to exert a little lateral pressure towards you, & not just downward pressure into the charging slots per se, we had a heck of a time getting the aids to seat into the charger at all…a few times, we simply gave up & just turned them off for the night rather than charging them. Speaking of the case, it is a charger only…there is no internal battery to juice the hearing aids on the go. They will automatically turn on (and connect to your phone if within range) when you remove them, but the aids are only muted when you insert them into the case, they do not automatically turn off when they are seated on the charging contacts. It’s a small detail, but it makes a difference if you don’t have the case plugged in when you stow the aids away as they will continue to drain the battery if you forget to turn them off. Not having used other hearing aids in the past, I can’t be sure if this is typical, but in our experience, these little guys squeal LOUDLY if your fingers get really close to the earpiece or accidentally press them a little too hard while fitting them into the ear canals. Sennheiser includes six wax guard applicators in the package. Most people are probably familiar with cleaning wax off the eartips & driver openings of regular BT earbuds–I thought maybe that’s what these wax guard sticks were for. But the Clear Slims have an additional protective cap over the earpiece openings to prevent wax buildup/ingress. According to the manual, you should change the wax guards every 3-4 months. The idea is to use one end of the applicator to GENTLY remove the existing wax guard cap, flip the applicator over, place the new cap housed in the other end over the opening, then discard the applicator stick. You have enough here to last you about 1.5-2 years if you follow Sennheiser’s schedule, but it is an added maintenance wrinkle you have to remember to do & an extra (minor) expense you may not have seen coming. On-ear controls offer many functions: volume +/-, call answer/reject/hang up, change sound mode, power on/off, but you only have one button per earpiece, and the manual is often confusing about button presses and timing. For example, some functions require a “quick” button press of <2 seconds, but others require a “quick” button press of >2 seconds, while others require a button press (no “quick”) of <2 seconds–oh, and many functions appear to use the same combinations of button presses/timing. Someone really needs to edit the manual to make sure “quick” is used consistently with the proper greater-than/less-than symbols because the instructions are all over the place. Also, if you happen to hold down one of the buttons too long trying to turn it off, on, or pair the earpiece, you can accidentally put it into “storage mode” where the aid becomes completely unresponsive and won’t even light up when charging. I had to contact support thinking one of the aids had burned out! NOTE: if this happens to you, hold down the button for 15-20 seconds to take the aid out of storage mode. Finally, despite the pleasant & natural sound they offer for the world around you, there is a noticeable sidetone for your own voice that can border on distracting. Specifically, the sound of your own voice is not only amplified, it echoes as well. In the end, it’s a small price to pay for better hearing all around, but it does take some time to get used to during a conversation. Despite these observations & reservations, we’re still incredibly happy with the Sennheiser All-Day Clear Slims. There are a few things we need to get used to with this particular device, although that’s likely true of anyone’s transition to hearing aids. But given her more noticeable hearing degradation over mine, the improvement in my wife’s quality of life thanks to the Clear Slim hearing aids is nothing short of amazing. HIGHLY RECOMMENDED!

I am pleased to provide a detailed review of the Sennheiser All-Day Clear Slim, an Over-the-Counter (OTC) self-fitting hearing aid designed to cater to individuals with mild to moderate hearing loss. This innovative device has garnered significant attention in the audiology community, and I shall delve into its features, performance, and overall user experience. Design and Comfort:
 The Sennheiser All-Day Clear Slim boasts a sleek, compact design that ensures a comfortable fit behind the ear. The device's slim profile and lightweight construction make it nearly imperceptible, allowing users to wear it with confidence. You can also stream music, and watch videos from your mobile device all while still being able to catch sounds around you. The ear tips, available in various sizes, provide a snug fit and effective sound isolation. Sound Quality and Performance:
 The Sennheiser All-Day Clear Slim is equipped with advanced noise reduction technology, which effectively minimizes background noise and enhances speech clarity. The device's proprietary SoundPoint technology enables users to customize their listening experience, with three distinct sound profiles tailored to various environments. Additionally, the hearing aid's feedback cancellation feature ensures a seamless listening experience, free from high-pitched squeals. Ease of Use and Self-Fitting:
 One of the standout features of the Sennheiser All-Day Clear Slim is its self-fitting capability. The accompanying mobile application guides users through a simple, step-by-step process to customize the device's settings according to their unique hearing needs. This intuitive approach eliminates the need for professional fitting, making the device more accessible to a wider audience. Battery Life and Maintenance:
 The Sennheiser All-Day Clear Slim features a rechargeable battery, providing up to 16 hours of continuous use on a single charge. The device's battery life indicator and low-battery alerts ensure users are always aware of their power status. Furthermore, the hearing aid's design and easy-to-clean construction make maintenance a breeze. Conclusion:
 The Sennheiser All-Day Clear Slim is a remarkable OTC self-fitting hearing aid that offers a unique blend of comfort, performance, and ease of use. Its advanced noise reduction technology, customizable sound profiles, and self-fitting capabilities make it an attractive option for individuals seeking a discreet and effective hearing solution. While it may not be suitable for those with more severe hearing loss, the Sennheiser All-Day Clear Slim is an excellent choice for those with mild to moderate hearing impairment.

I’m a male in my mid-50s with medically documented mild hearing loss. The opportunity to use the Sennheiser - All-Day Clear Slim hearing aids is exciting, but my results after a few days of sporadic use is a mixed bag. Setup is straightforward. Using the included charger and cable, charging takes up to 3 hours. I took this opportunity to download the All-Day Clear app and create my account with Sennheiser. The app guides you through setup and fitting. Helpful reminders and tips are delivered via notifications on the phone. At the end of the day, the hearing aids fit securely in the charging cradle and they’re ready to go the next morning. I’ve had no issues with battery life. They easily last all day. The Sennheiser - All-Day Clear Slim come with small, medium, and large ear tips. Finding the right fit was easy. I appreciate that these tips rest outside the ear canal; that really enhances long-term comfort. The forming wire that wraps over the top of the ear is easily shaped to hold securely while remaining unobtrusive. Each hearing aid (Left and Right) connects separately to your phone’s Bluetooth. The sound control settings available via the app are simple and easy to understand. Hearing aid volume is controlled via an in-app slider. There is also the ability to control each ear’s volume separately, and a basic equalizer to control Bass, Mid, and Treble. (See accompanying photos). The Sennheiser - All-Day Clear Slim are comfortable and easy to wear for hours at a time. Present but not intrusive. Being connected to my phone, I am able to listen to music and movies, anything I might normally listen to. This is welcome and convenient, but I’ll stick to my usual active noise cancelling earbuds for extended music playback and entertainment. The Sennheiser - All-Day Clear Slim hearing aids sound okay in this use but cannot compete with the dynamic range of a dedicated pair of quality earbuds. One pleasant surprise is the ability to make and receive calls while using these hearing aids. Calls can be initiated with the usual voice commands, and there are also buttons on the hearing aid earpiece (the part behind the ear) that can initiate/answer/end calls. Incoming sound quality is excellent, and people on the other end of the call tell me I sound good. I find that I need to stay within about 15 feet of my phone, or call/connection quality suffers. I said at the start that my experience with the Sennheiser - All-Day Clear Slim has been a mixed bag. Pros: In a quiet environment like an office or meeting, I have been very pleased with their performance. Take the time to adjust volume and equalizer to suit your needs, and the difference is apparent. I can now clearly hear coworkers that I have previously struggled to decipher. This is a huge positive difference. Cons: In a noisier setting, like my family room with an oscillating fan in the corner set on medium, I find the constant hum of the fan very distracting. So far, I haven’t found EQ or volume settings to compensate for the unwanted sound amplification. I have had the same experience while trying to have a conversation while the television was a little too loud. Basically, it seems to come down to competing sounds, and I have the feeling that I’ll need to be patient while my ears/brain learn to make sense of the additional input. Overall, I am very impressed with the quality of the Sennheiser - All-Day Clear Slim hearings aids, both in build and function. I’m looking forward to improved hearing and comprehension without the need to consult my audiologist.

Sennheiser - All-Day Clear Slim - OTC Self-Fitting Hearing Aids I have been using hearing aids for a number of years so I jumped at the chance to test and evaluate these Over the Counter (OTC) Hearing Aids. They can be acquired without a visit to an audiologist. Also, they are sold at a fraction of a price that an audiologist would prescribe. I know - I have tried both. These hearing aids fit behind the ear with a tube that fits inside the ear. I find the aids that fit directly into the ear a bit more comfortable, especially since I need glasses. The comfort level when wearing these aids is acceptable, perhaps due to the slimmer fit behind the ear. These hearing aids come with a case that stores and charges them, so no batteries are needed. The aids must be inserted correctly in order to charge. The case has a lid and I recommend not closing the lid. There are small light indicators indicating battery strength and Bluetooth connectivity. Bluetooth connectivity can be a great help when connecting to electronics and TV's that support it. Much appreciated, thank you. The software that supports these hearing aids are support by Apple or Google phone apps. The setup process is easy to understand as it walks you through it. The software also includes the ability to tweak and adjust to an individual needs. I gave these hearing aids a 5 star rating. Hearing aids are no fun but for me, a necessity. These hearings are not perfect, but they are very good and they are affordable.

The Sennheiser - All-Day Clear Slim - OTC Self-Fitting Hearing Aid for Mild to Moderate Hearing Loss – All-Day Wear & Bluetooth – in Gray is a well designed and engineered hearing system. The specifications put it in the top of the OTC (over the counter) class of hearing aids. One of the key specifications that impressed me is the Ingress Protection (IP) Rating of IP68 which means they have enviable dust and water incursion prevention – basically they are what I would call waterproof. Sennheiser has been making audio devices since 1945 and has a great reputation. They have given me all day use (around 16 hours), including listening to Bluetooth streamed music. Charging takes several hours which I do overnight. They are not intrusive looking from an esthetic point of view. The carrying case is bulky and does not include internal battery power for charging – needs to be plugged in to a usb charger. Its microphone array works well for phone calls while the sound output in the ear is pleasant even for listening to music. Overall it helps my aural discrimination letting me understand what is being spoken. They are light and stay in place. Great product.