Fitting Styles: RIC
Warranty: 5 years
Charger: Comes with charger

If you've been told you have unaidable hearing loss in one ear, sometimes called single-sided deafness, a conventional hearing aid on that side generally won't help, because the ear itself can't process sound clearly enough for amplification to make a difference.
Launched in September 2026, the Phonak Audeo EON CROS R hearing aids take a different approach: rather than trying to amplify sound in the ear that can't use it, it picks up sound from that side and sends it across to a hearing aid worn on your better-hearing ear.
Phonak states CROS EON R picks up sound on your unaidable side and transmits it wirelessly to a Phonak Audeo EON R hearing aid worn on your better ear.
CROS EON R pairs specifically with the EON R model, not EON Sphere, so if you're considering this option, your audiologist will fit it alongside an EON R device rather than a Sphere.
Not sure what to expect? When you get in touch, you'll speak with someone who can answer your questions and arrange a free hearing test if you decide you'd like one. The test is free, the advice is impartial, and there is no obligation to buy anything. Call us free on 0800 567 7621 or book a free hearing test to find out more.
"CROS devices solve a problem that's genuinely different from most hearing loss. If one ear simply can't process sound well enough to benefit from amplification, giving someone a louder version of nothing useful doesn't help. What CROS EON R actually does is bring sound from that side across to the ear that can use it, so conversations happening on your affected side don't just disappear. It's a specific solution for a specific problem, and it's worth understanding clearly rather than assuming it works like a normal hearing aid."
Paul Harrison, Audiology Expert & Founder, Hearing Aid UK
Phonak states CROS EON R supports Bluetooth Classic, Bluetooth LE Audio, and Auracast broadcast audio, and Auracast broadcast audio, and is compatible with Phonak's Roger wireless microphones via RogerDirect.
Auracast is a newer Bluetooth feature that lets certain venues, theatres, museums, and transport hubs broadcast sound directly to compatible hearing aids, and Roger microphones are useful for meetings, lectures or one-to-one conversations at a distance.
Phonak states CROS EON R offers up to 20 hours of rechargeable battery life on a full charge, with actual runtime depending on how much you stream and your listening environment.
This is specifically for people with unaidable hearing loss in one ear, where a conventional hearing aid on that side wouldn't provide meaningful benefit.
Common everyday frustrations this is designed to help with include struggling to hear someone speaking from your affected side, difficulty following conversation in groups, and not being able to tell which direction sound is coming from. If any of this sounds familiar, it's genuinely worth discussing with an audiologist rather than assuming nothing can help.
Phonak EON CROS R hearing aids are fitted and fine-tuned by a qualified, HCPC-registered audiologist in person, either at one of our 93+ UK clinics or during a free home visit. Getting the fitting right for your specific hearing loss is what turns the technology above into a genuinely comfortable, accurate hearing aid.
Phonak CROS EON R offers a genuine solution for a specific kind of hearing loss that conventional hearing aids can't address, bringing sound from an unaidable ear across to the ear that can use it.
Whether CROS technology is the right approach for your hearing loss depends on a proper assessment of both ears, which your audiologist can carry out during a free hearing test. Call us free on 0800 567 7621 or book a free hearing test to find out if CROS EON R could help you.
Please note that there will be an additional surcharge of £125 if we are pairing a single hearing aid with an existing aid bought from another company, where we are taking over the aftercare responsibilities and looking after both hearing aids.
What's the difference between CROS EON R and a normal hearing aid? A normal hearing aid amplifies sound in the ear that's wearing it. CROS EON R picks up sound from your unaidable ear and sends it to a hearing aid worn on your better ear, since amplification alone wouldn't help the affected side.
Will CROS EON R restore hearing in my affected ear? No. CROS EON R doesn't restore hearing in the unaidable ear; it transfers sound from that side across to your better ear so you don't miss conversations happening there. A hearing test with an audiologist can confirm whether this approach suits your specific hearing loss.
Does CROS EON R work with EON Sphere? No, CROS EON R pairs specifically with the Phonak Audéo EON R model.
Can I try CROS EON R before committing to buy? Yes. Your free hearing test and consultation with an HCPC-registered audiologist comes with no obligation to buy, and every purchase is backed by a 60-day money-back guarantee.
Do I need to visit a clinic, or can someone come to me? Both options are available. You can book a free appointment at one of our 93+ UK clinics, or arrange a free home visit if that's easier for you.
Kimberley Bradshaw is Head of Online Medical Content at Hearing Aid UK, with six years of experience writing about hearing healthcare for UK and US health and wellness publications. Her focus has always been the same: making complex topics feel clear, human, and easy to understand.
✔️ Head of Online Medical Content, Hearing Aid UK
✔️ Medical Content Writer — UK & US publications
✔️ 6 years experience writing in the audiology space
✔️ Member of Tinnitus UK
Here, at Hearing Aid UK, we offer a wide range of hearing aids available on the market - keeping up to date with the best and latest hearing aid technology.
We can support your hearing healthcare in clinic or in the comfort of your own home and with nationwide coverage, we will have an audiologist near you.
Whatever your hearing loss level, budget, or style our audiologists can help you find the perfect hearing solution for you.
Do not spend hundreds of pounds without getting a second opinion from us.
Not only are the prices great, but the service is fantastic! Many thanks to your team.In general, any audiologist will always recommend to you the hearing aid model that best suits your needs. Here is a useful checklist to make sure that is the case.
If you have significant hearing loss in both ears, you should be wearing two hearing aids. Here are the audiological reasons why:
Localisation: The brain decodes information from both ears and compares and contrasts them. By analysing the minuscule time delays as well as the difference in the loudness of each sound reaching the ears, the person is able to accurately locate a sound source.
Simply put, if you have better hearing on one side than the other, you can't accurately tell what direction sounds are coming from.
Less amplification is required: A phenomenon known as “binaural summation” means that the hearing aids can be set at a lower and more natural volume setting than if you wore only one hearing aid.
Head shadow effect: High frequencies, the part of your hearing that gives clarity and meaning to speech sounds, cannot bend around your head. Only low frequencies can. Therefore, if someone is talking on your unaided side, you are likely to hear that they are speaking, but be unable to tell what they have said.
Noise reduction: The brain has its own built-in noise reduction, which is only really effective when it is receiving information from both ears. If only one ear is aided, even with the best hearing aid in the world, it will be difficult for you to hear in background noise as your brain is trying to retain all of the sounds (including background noise) rather than filtering them out.
Sound quality: We are designed to hear in stereo. Only hearing from one side sounds a lot less natural to us.
Fancy some further reading on this topic? You can read about why two hearing aids are better than one in our article, hearing aids for Both Ears, here
For most people, the main benefit of a rechargeable hearing aid is simple convenience. We are used to plugging in our phones and other devices overnight for them to charge up. Here are some other pros and cons:
For anybody with poor dexterity or issues with their fingers, having a rechargeable aid makes a huge difference, as normal hearing aid batteries are quite small and some people find them fiddly to change.
One downside is that if you forget to charge your hearing aid, then it is a problem that can't be instantly fixed. For most, a 30-minute charge will get you at least two or three hours of hearing, but if you are the type of person who is likely to forget to plug them in regularly, then you're probably better off with standard batteries.
Rechargeable aids are also a little bit bigger and are only available in Behind-the-Ear models.
Finally, just like with a mobile phone, the amount of charge you get on day one is not going to be the same as you get a few years down the line. Be sure to ask what the policy is with the manufacturer's warranty when it comes to replacing the battery.
For most people, the answer is yes. But it's never that simple.
The majority of hearing problems affect the high frequencies a lot more than the low ones. Therefore, open fitting hearing aids sound a lot more natural and ones that block your ears up can make your own voice sound like you are talking with your head in a bucket. Therefore, in-ear aids tend to be less natural.
However, the true answer is we can't tell until we have had a look in your ears to assess the size of your ear canal, and until we have tested your hearing to see which frequencies are being affected.
People with wider ear canals tend to have more flexibility, also there are open fitting modular CIC hearing aids now that do not block your ears.
There is also the age-old rule to consider, that a hearing aid will not help you if it's sat in the drawer gathering dust. If the only hearing aid you would be happy wearing is one that people can't see, then that's what you should get.
Most people can adapt to any type of hearing aid, as long as they know what to expect. Have an honest conversation with your audiologist as to what your needs are.
Generally speaking, six or more. Unless it's none at all. The number of channels a hearing aid has is often a simplistic way an audiologist will use to explain why one hearing aid is better than another, but channels are complex, and it is really not that straightforward. Here are some reasons why:
Hearing aids amplify sounds of different frequencies by different amounts. Most people have lost more high frequencies than low, and therefore need more amplification in the high frequencies. The range of sounds you hear is split into frequency bands or channels, and the hearing aids are set to provide the right amount of hearing at each frequency level.
Less than six channels, and this cannot be done with much accuracy, so six is the magic number. However, a six-channel aid is typically very basic with few other features and is suitable only for hearing a single speaker in a quiet room. The number of channels is not what you should be looking at; it's more the rest of the technology that comes with them.
As a final note, different manufacturers have different approaches. One method is not necessarily better than any other. For example, some manufacturers have as many as 64 channels in their top aids. Most tend to have between 17 and 20. One manufacturer has no channels at all.
Manufacturer's warranties typically last between 2-5 years, depending on the brand and model, and cover defects in materials and workmanship. This includes repairs for component failures, electronic malfunctions, and manufacturing defects, but excludes damage from misuse, accidents, or normal wear. Most manufacturers also include loss and damage insurance for the first year.
We handle all warranty claims on your behalf, liaising with manufacturers and ensuring you get replacement devices quickly when needed. This comprehensive warranty coverage, combined with our lifetime aftercare, gives you complete peace of mind. Find out more about our warranty cover here
Our hearing tests are completely free, whether at our clinics or in your home. Unlike other providers who charge £30-£100 for home visits, we believe hearing healthcare should be accessible without financial barriers. Our comprehensive assessments include examination by an HCPC-registered audiologist, audiogram results, and personalised recommendations.
All testing, future adjustments, and ongoing support are included at no extra cost. While NHS tests are also free, typical 6-week waiting periods often lead people to seek immediate private testing. We provide prompt, professional assessments that fit your schedule and budget.
Yes, we offer completely free home visits throughout the UK, and this service is included in our prices with no additional charges. Home visits are particularly valuable for people with mobility issues, busy schedules, or those who simply prefer the comfort and convenience of their own environment.
Our audiologists can conduct full hearing tests, fit hearing aids, and provide ongoing support in your home. This service sets us apart from many providers who either don't offer home visits or charge extra for them.
We can offer prices up to 40% lower than high street retailers because of our business model. As a network of 200+ independent audiologists, we don't have the massive overheads of large retail chains - no expensive high street premises, no sales targets pushing audiologists to sell the most expensive options, and no costly marketing campaigns.
However, we maintain the same buying power as the big chains because we purchase on behalf of our entire nationwide network. This means you get access to the same premium hearing aids with professional service, but at genuinely competitive prices.
We offer a comprehensive 60-day money-back guarantee, which gives you twice the industry standard time to properly assess whether your hearing aids are right for you. This extended period recognises that adjusting to hearing aids takes time, and your brain needs several weeks to adapt to the amplified sounds.
Unlike many providers who offer just 30 days, we believe 60 days gives you the confidence to test your hearing aids in all the situations that matter to you - from quiet conversations at home to busy restaurants and outdoor activities.
When we refer to a product as 'Latest Launch', we mean it is the latest to be released on the market.
When we refer to a product as 'New', we mean that the product is the newest hearing aid model on the market.
When we refer to a product as 'Superseded', we mean that there is a newer range available which replaces and improves on this product.
When we refer to a product as an 'Older Model', we mean that it is has been superseded by at least two more recent hearing aid ranges.