Phonak Audéo Infinio Sphere vs Audéo Lumity: What’s the Difference?
Most hearing aid comparisons deal in small margins. This one doesn’t.
The Phonak Audéo Infinio Sphere uses a dedicated AI chip called DEEPSONIC that separates speech from background noise, and in independent lab testing it scored 4.6 out of 5 for speech in noise, the highest figure recorded for a prescription hearing aid. The Audéo Lumity scored 2.1.
That’s not a refinement, it’s a different category of performance, and it comes down to one piece of hardware. But Lumity hasn’t stopped being a good hearing aid: it’s slimmer, sits at a lower price point, and offers a telecoil and CROS support that Sphere doesn’t. For some people it’s still the better buy.
Summary
Audéo Infinio Sphere runs two chips: an ERA processor plus a dedicated DEEPSONIC AI chip for speech in noise. Audéo Lumity runs a single previous-generation processor with SmartSpeech Technology. The gap shows in loud rooms and barely anywhere else. Lumity is smaller, sits at a lower price point, and offers telecoil and CROS options.
Key Takeaways
- Infinio Sphere uses a dedicated AI chip (DEEPSONIC) purely for speech in noise
- Independent testing: 4.6/5 speech in noise for Sphere versus 2.1/5 for Lumity
- DEEPSONIC was trained on 22 million real-world sound samples
- Sphere is larger because of the second chip, and sits at a higher price point
- Sphere comes only in technology levels 90 and 70; Lumity has more options
- Lumity uses Bluetooth 4.2 with no Auracast support
- Lumity offers a telecoil (Audéo L-RT); no Infinio model has one
- Sphere is not CROS compatible; Lumity supports CROS for single-sided loss
The Core Difference: One Chip or Two?
Every hearing aid has a processor handling amplification, noise reduction and directionality. Lumity does all of that on one chip, running AutoSense OS 5.0 with Phonak’s SmartSpeech Technology including StereoZoom 2.0 on the L90 and L70 levels to narrow in on whoever is speaking. Both are receiver-in-canal hearing aids covering mild to profound hearing loss.
Infinio Sphere adds a second chip that does one job only. The DEEPSONIC processor runs a neural network trained on 22 million real-world sound samples, and its entire purpose is pulling speech out of background noise in real time.
That’s why Phonak can claim roughly double the speech-in-noise improvement around 10 dB against 5 dB for the standard platform. It’s also why the device is physically a little larger. Two chips need more room.
What Does the Lab Data Show?
Independent testing by HearAdvisor gives the clearest picture, because it measures both devices under identical conditions.
Infinio Sphere earned an A grade, ranking in the top 3% of prescription hearing aids tested, with a speech-in-noise score of 4.6/5 the highest recorded for any prescription hearing aid.
Lumity scored 2.1/5 for speech in noise. It did win HearAdvisor’s Expert’s Choice Award in both 2023 and 2024, so it’s a well-regarded device but the lab also flagged a genuine weakness: own-voice comfort scored 1.0/5, well below the category average. If your own voice has ever sounded hollow or boomy through hearing aids, that’s worth raising before choosing Lumity.
Where Does Audéo Lumity Still Win?
Lumity wins on price, size and hardware variety including a telecoil model and CROS support that Infinio Sphere doesn’t offer at all. Three real advantages, none of them consolation prizes.
Value. Lumity is a previous-generation platform now and sits at a lower price point, and our payment plans can spread either option across months. For someone whose hearing loss is straightforward and whose week is mostly quiet, that saving is real money not spent on processing they’d rarely use.
Size. Without a second chip inside, Lumity is slimmer and more discreet. If visibility is what’s been holding you back, that matters.
Hardware variety. Lumity comes in a telecoil version (Audéo L-RT) and a waterproof version (Audéo Life), and runs across four technology levels from L30 to L90. Infinio Sphere exists only at 90 and 70, with no telecoil at all.
Consistent battery. Lumity runs for up to 32 hours. Infinio Sphere’s Ultra firmware pushed it to 56 hours in standard mode but with the AI running continuously, that drops to around 10 hours. Your real battery life depends heavily on how often Sphere mode engages.
Phonak Audéo Infinio Sphere vs Audéo Lumity Compared
The two differ most on speech in noise, connectivity and hardware options. Everything else is close.
| Audéo Infinio Sphere | Audéo Lumity | |
|---|---|---|
|
Released |
September 2024 |
2022 |
|
Processor |
ERA + DEEPSONIC (dual chip) |
Previous-generation single chip |
|
Speech in noise (lab) |
4.6/5 |
2.1/5 |
|
Speech-in-noise gain |
~10 dB |
~5 dB |
|
Battery |
Up to 56 hrs standard, ~10 hrs with AI active |
Up to 32 hrs |
|
Bluetooth |
LE Audio, Auracast-ready |
Bluetooth 4.2, no Auracast |
|
Technology levels |
90 and 70 only |
L30, L50, L70, L90 |
|
CROS support |
No |
Yes |
|
Telecoil |
No |
Yes Audéo L-RT model |
|
Size |
Larger (dual chip) |
Slimmer, more discreet |
|
Water resistance |
IP68 |
IP68 |
What Affects the Price?
Phonak doesn’t publish retail pricing, and what you pay depends on more than the model name.
| What affects it | Why it matters |
|---|---|
|
Technology level |
Sphere exists only at 90 and 70. Lumity runs L30 to L90. Level moves the price more than the model does. |
|
One ear or two |
Many quotes cover a single device. Most people with hearing loss in both ears need two. |
|
What’s included |
Fitting, follow-up appointments, warranty length and trial period differ between providers. |
Lumity is a previous-generation platform and sits at a lower price point than Infinio Sphere.
For exact pricing on either model, contact our team or call (888) 341-5952. We’ll quote based on your hearing test results and technology level, so the figure reflects what you actually need.
Which One Should You Choose?
Choose Infinio Sphere if noisy environments are your hardest listening situation. Choose Lumity if your days are quieter, or if you need a telecoil or CROS.
Choose Audéo Infinio Sphere if restaurants, meetings, family gatherings or any room with several voices at once is where hearing genuinely fails you. That’s the exact problem the DEEPSONIC chip was built to solve, and the lab data backs it up.
Choose Audéo Lumity if your days are mostly quiet, if value matters more than the last increment of noise performance, if discretion is your priority, if you need a telecoil for hearing loops, or if you need CROS for single-sided hearing loss Sphere supports neither.
One more thing worth raising with your audiologist: your speech-in-noise test results. People routinely underestimate how much they struggle in noise, having spent years quietly avoiding those situations. That test decides this more reliably than any spec sheet.
When Should You See an Audiologist?
Book a hearing test if conversations sound muffled, if you turn the TV up louder than others prefer, or if restaurants have become hard work.
See a professional promptly rather than shopping if you have sudden hearing loss in one ear, ear pain, drainage, dizziness, or ringing in only one ear. Those need medical attention first.
Conclusion
The Phonak Audéo Infinio Sphere versus Audéo Lumity choice turns entirely on where your hearing actually fails. In quiet rooms and one-to-one conversation these two perform far closer than the lab scores suggest, which is why Lumity remains a genuinely good hearing aid at a lower price point, in a slimmer shell, with CROS support Sphere doesn’t offer.
But in loud, crowded environments the dedicated DEEPSONIC chip does something no single-processor hearing aid has matched 4.6 against 2.1 isn’t a marketing gap, it’s measured under identical conditions by an independent lab. So be truthful with yourself about your week. If you’ve been avoiding restaurants and group dinners because following conversation is exhausting, Sphere earns its premium. If you haven’t, you’d be paying for a chip that spends most of its time idle.
Compare Both at Ear Solutions
The only reliable test is wearing them in your own life, your kitchen, your workplace, the restaurant where conversation always gets hard.
At Ear Solutions that starts with a full hearing evaluation, then a professional fitting with real-ear verification, which measures what the hearing aid actually delivers inside your ear canal rather than what the software assumes.
Call (888) 341-5952 or book a hearing test at one of our centers across New York, Massachusetts and Connecticut.
FAQs
What is the main difference between Phonak Infinio Sphere and Lumity?
Infinio Sphere runs two chips, an ERA processor plus a dedicated DEEPSONIC AI chip that separates speech from background noise in real time. Lumity runs Phonak’s previous-generation single processor. The difference shows up mainly in loud, crowded environments rather than quiet rooms.
Is the Phonak Infinio Sphere worth choosing over Lumity?
If noisy environments are where you struggle, yes. Independent lab testing scored Infinio Sphere 4.6 out of 5 for speech in noise against 2.1 for Lumity. If your days are mostly quiet and one-to-one, you’d be paying for processing you rarely use.
Does Phonak Audéo Lumity support CROS?
Yes, and this is one area where Lumity has the advantage. The Audéo Infinio Sphere is not CROS compatible. If you have unaidable hearing in one ear and need a CROS solution, Lumity or the standard Infinio range is the right conversation to have.
Do Phonak Infinio Sphere or Lumity have a telecoil?
Lumity does, through the Audéo L-RT model. No hearing aid in the Phonak Infinio family includes a telecoil Infinio Sphere is Auracast-ready instead. If a venue you attend regularly runs a hearing loop rather than Auracast, that’s a genuine reason to consider Lumity.
How long does the Phonak Infinio Sphere battery last?
Up to 56 hours in standard mode after Phonak’s Ultra firmware update. With the DEEPSONIC AI running continuously, that drops to roughly 10 hours. Real runtime depends on how often you’re in noisy environments, since that’s when the AI engages.
