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Phonak Infinio Ultra Sphere i70 Hearing Aids Product Highlights

Tech Rating:
Our Price
£1945 per aid
£3595 per pair

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

Manufacturer:Phonak
Model:Ultra Sphere i70
Style:Behind the Ear
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Details & Features


Phonak Infinio Ultra Sphere i70 hearing aids overview

The Phonak Infinio Ultra Sphere i70 is the advanced-level Receiver-in-Canal (RIC) model from Phonak's Infinio Ultra range, and it brings something genuinely new to hearing aid technology - a dedicated AI chip that separates speech from noise in real-time.

This is the first hearing aid to feature dedicated hardware specifically for tackling the perennial problem of hearing in noisy places, and at the i70 level, you're getting this groundbreaking technology at a more accessible price point.  Wondering about the price difference? Speak to our team for a transparent breakdown of i70 vs i90 costs and what you're getting at each level.

 

Quick highlights:

  • For mild to profound hearing loss
  • Spheric Speech Clarity 2.0
  • AutoSenseOS 7.0
  • EasyGuard compatible
  • Dedicated AI chip any direction
  • Rechargeable on the go
  • Universal connectivity
  • Available in colours: Sand beige, sandalwood, chestnut, champagne, silver grey, graphite grey, and velvet black
  • Compatible accessories: Roger On, Roger Select, Roger Table Mic, Roger Clip-On Mic and the myPhonak app.

 

The dedicated AI chip running at medium strength

The headline feature here is the dedicated AI processor working constantly to separate speech from background noise. This isn't software cleverness - it's actual dedicated hardware that does nothing but work on extracting speech from the noise around you.

The i70 runs this AI processing at medium strength, which means you're getting real AI capability and genuine benefit in noisy environments, just not at the absolute maximum level the i90 provides.

What this means practically is that you can navigate busy restaurants, family gatherings, or meetings with multiple participants with considerably less mental effort than you'd experience with traditional hearing aids. The AI processes speech from all directions - not just what's in front of you - so you can follow conversations even when people are beside or behind you.

Curious whether medium strength is sufficient for your specific listening situations? Our audiologists can help you assess which level matches your needs - arrange a no-obligation consultation.

 

Spheric Speech Clarity 2.0: Advanced-level processing

The AI chip powers Spheric Speech Clarity 2.0, which extracts and enhances speech from multiple speakers simultaneously, regardless of where they're positioned around you. At medium strength, you're still getting meaningful speech enhancement in challenging environments - it's simply calibrated at an advanced level rather than the premium level of the i90.

The practical benefit is better speech understanding in complex listening environments without the exhausting concentration that usually comes with them. If you've been nodding along in restaurants because it's too difficult to actually follow conversations, the i70 is designed to make those moments considerably less frequent.

 

AutoSense 7.0

The i70 uses Phonak's seventh generation of AutoSense technology, which has been trained using artificial intelligence to recognise different listening environments and adjust accordingly. As you move through your day - from quiet home to busy street to restaurant - the hearing aids detect these changes and modify their processing automatically.

This has been refined over multiple generations and generally works more seamlessly than many competitors' systems. You don't need to think about what programme you should be using - the hearing aids handle it for you.

 

APD 3.0 Fitting

The i70 includes Phonak's new APD 3.0 fitting prescription, which uses enhanced processing speed to provide more accurate gain at each frequency of your hearing loss. This is quite technical, but essentially it means the hearing aids can be programmed more precisely to your specific hearing profile. It's one of those background improvements that contribute to everything sounding more natural.

 

Universal Bluetooth Connectivity

The i70 supports universal Bluetooth connectivity, which means it works properly with both iPhone and Android devices, as well as laptops and tablets. You can pair two devices simultaneously - so your phone and laptop can both stay connected - and the enhanced Bluetooth range provides double the transmission distance of previous Phonak models.

This matters because dodgy Bluetooth connections are genuinely frustrating. There's nothing worse than audio cutting in and out during an important phone call. The i70's connectivity is reliable enough that you'll actually want to use it regularly.

The hearing aids support two-way streaming, so you can both hear and speak through them during phone calls. It works consistently enough to become a feature you rely on rather than avoid.

 

Future-proof with Auracast

The i70 is ready for Auracast broadcast technology, which is still emerging but promises to let you connect to public sound systems like televisions, cinemas, or announcement systems. This could be genuinely useful once it becomes more widespread, though it's not something you'll use immediately.

 

Double-tap controls

You can answer phone calls or control audio streaming by double-tapping the hearing aids themselves. It's surprisingly intuitive once you're used to it and means you don't need to fumble for your phone when a call comes in.

 

EasyGuard Dome protection and quality

The i70 is compatible with Phonak's patented EasyGuard dome, which protects the hearing aids from wax buildup. This might not sound exciting, but anyone who's had to get their hearing aids professionally cleaned frequently because of wax blockages will appreciate this practical feature. It makes maintenance noticeably easier.

These hearing aids are rated IP68 for water and dust resistance - the highest rating you'll find in hearing aids. They won't survive swimming (no hearing aid will), but they'll handle rain, splashes, and dusty environments without complaint.

 

Battery life:  11-56 hours, depending on usage

Battery life varies depending on how much AI processing you're using. You'll get up to 56 hours in standard use for mild hearing loss without streaming, or around 11 hours when using the AI mode. The hearing aids manage this automatically based on your environment, so you don't need to worry about manually switching modes.

 

Who should consider the i70?  Is the i70 right for you?

The Infinio Ultra Sphere i70 is ideal for people who want the benefit of genuinely new AI technology for hearing in noise but are working within a more modest budget than the i90 requires. If restaurants, cafés, or social gatherings are part of your life but you've been finding them exhausting or avoiding them because hearing is too difficult, the AI technology in the i70 could make a genuine difference.

It's also excellent for people who value reliable connectivity and want to use their hearing aids for phone calls and media streaming without technical frustrations.  Not sure if the i70 is right for you? Book a consultation where you can try both the i70 and i90 to hear the difference for yourself - with no obligation to buy.

 

Researching for a loved one?

If you're reading this page on behalf of someone else - perhaps a parent, partner, or friend - you're not alone. Many people come to us researching hearing aids for family members who've been struggling with hearing loss, and it's one of the most thoughtful things you can do.

The best next step is booking a consultation. You're welcome to attend with them - many family members find it helpful to be there for the discussion.

Our audiologists can assess whether this technology is appropriate for their specific hearing loss and lifestyle, and answer any questions you both have. There's no obligation, and it's an opportunity to understand what modern hearing aid technology can actually achieve.

 

Conclusion

The Phonak Infinio Ultra Sphere i70 brings dedicated AI technology to hearing aids at an advanced level. You're getting the same groundbreaking hardware as the i90, running at medium strength rather than full power.

For many people, this represents an excellent balance between performance and value - you're still getting AI-powered speech separation that's considerably ahead of traditional hearing aid technology.

The Infinio Ultra Sphere i70 is available through our qualified hearing care professionals who can ensure proper fitting and programming for your specific hearing needs.

 

Phonak Infinio Ultra Sphere i70 vs i90 comparison chart

Feature CategoryFeatureL90 (Premium)L70 (Advanced)
AutoSense OS 7.0 FeaturesSpheric Speech in Loud Noise
Music
Speech in Car
Comfort in Noise
Speech in Noise
Calm Situation
Streaming Speech
Streaming Music
SmartSpeech Technology FeaturesSpeech Enhancer
SpeechSensor
Spheric Speech Clarity 2.0Full strengthMedium strength
StereoZoom 2.0
Dynamic Noise Cancellation
Motion Sensor Hearing
ActiveVent Receiver*
Roger Technology
More FeaturesSpheric Speech in Loud Noise (manual)
Speech in Loud Noise (manual)
Speech in 360° (manual)
Tap Control
SoundRelax
DuoPhone
Real Ear Sound
UltraZoom
WindBlock
SoundRecover2
WhistleBlock
Tinnitus Balance
Fine Tuning Channels2020

 

Key takeaways

  • Dedicated AI chip at medium strength - first hearing aid with dedicated hardware for speech separation, running at an advanced level for genuine benefit in noisy environments
  • Still processes speech from all directions - extracts and enhances conversation from anywhere around you, not just what's in front
  • AutoSense 7.0 included - automatically detects and adapts to different listening environments throughout your day without manual switching
  • Full universal Bluetooth connectivity - reliable connection to iPhone and Android, with double the transmission range of previous Phonak models
  • Battery flexibility - up to 56 hours in standard use, around 11 hours when using AI mode. Hearing aids manage this automatically
  • Same build quality as i90 - IP68 water and dust resistance, EasyGuard wax protection compatibility, and double-tap controls
  • APD 3.0 fitting precision - more accurate programming to your specific hearing profile for more natural sound
  • Best suited for people who want genuine AI technology for better hearing in noise at a more accessible price point than the premium i90

 

Other performance levels in the range:

 

Need more support with Infinio Ultra Sphere i70?

If the Phonak Infinio Ultra Sphere i70 sounds like it could help with those challenging, noisy situations, the next step is a consultation with a qualified hearing care professional. They can assess whether this technology suits your hearing loss and lifestyle, and let you experience the AI difference for yourself.

Get in touch to book a consultation, or if you'd like an honest conversation about whether the Infinio Ultra Sphere i70 is right for you, we're here to help.  Call us free on 0800 567 7621 to speak with one of our audiologists today.

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.

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Written by Kimberley Bradshaw, Head of Online Medical Content

Kimberley Bradshaw started her love of content creation, as a freelancer for many well-established medical brands.  She has written about hearing healthcare for several UK and US online health and wellness publications since.  Connect with Kimberley on LinkedIn.

Phonak Infinio Ultra Sphere Hearing Aid Information

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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.

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What's included in our hearing aid prices?

Full Hearing Test & Examination by a Registered Audiologist
Fitting and Programming of Hearing Aid(s)
All Aftercare and Fine Tuning for Life
Full Manufacturer's Warranty
60 Day Full Money Back Guarantee

FAQs

What is the best hearing aid model for me?

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.

  • Audiologist's level of knowledge: The audiologist you have seen will hopefully have a wide knowledge of all available hearing aids; however, some will only be familiar with a small number of brands and, therefore, may not really be in a position to know which model is the best for you. It is OK to challenge their recommendation and ask them to justify why this particular brand is the one for you.
  • Do research: Read about the hearing aid that was recommended. Does it seem like it will suit your lifestyle? Does it have more or fewer features than you need? 
  • Be aware of sales targets: Many high street retailers have specific tie-ins to a particular manufacturer/brand. The hearing aid they have suggested may still be the correct one for you, but do your research so that you know why they might have recommended it.
Do I need one hearing aid or two?

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

What are the benefits of rechargeable hearing aids?

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.

Are Behind-the-Ear hearing aids better than In-the-Ear hearing aids?

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.

What are channels, and how many do I need?

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.

What's covered in a manufacturer's warranty?​

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.

How much does the hearing test cost?

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 a 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.

Do you offer home visits, and are they included in the price?

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.

Why are your hearing aids cheaper than what I'd pay on the high street?

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.

How long do I have to try the hearing aids before committing to keep them?

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.

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