Phonak Audéo Sphere Infinio I70 vs I90: Price & Features Compared (2026)
The I90 has Phonak’s full-strength Spheric Speech Clarity, while the I70 uses medium strength and drops the Speech Enhancer. Both share 20 channels and the same Sphere hardware. At Ear Solutions, the I70 is listed from $3,320 to $6,258 and the I90 from $4,854 to $9,326.
Picture someone in their late forties who loves family dinners but spends them nodding along and guessing. They’ve narrowed it down to two Phonak hearing aids and can’t tell why one costs so much more. Fair question.
The two levels look almost identical on paper. This guide explains what actually separates them, what each costs at Ear Solutions in the USA, and who is likely to notice the difference.
Summary
Phonak Audéo Sphere Infinio is a premium rechargeable hearing aid built around a dedicated AI chip for speech in noise. The I90 and I70 share the same hardware, and the main difference is how strongly the AI cleans up speech. For many people, the real decision is how noisy their days are and how much they want to spend.
Key Takeaways
- Both levels use the DEEPSONIC AI chip, found only in Sphere models
- The I90 has full-strength Spheric Speech Clarity; the I70 has medium strength
- Both have 20 channels and IP68 protection, per an independent review
- Phonak lists the I90 with an extra Speech Enhancer
- Listed prices run from $3,320 to $9,326
- There is no telecoil, and Auracast is not yet fully active, per an independent review
What Is the Phonak Audéo Sphere Infinio?
It’s Phonak’s rechargeable receiver-in-canal hearing aid with a second chip dedicated to deep neural network (AI) processing. Phonak designed it mainly to help you follow speech in noisy places.
The original Sphere launched in August 2024, and a major firmware update called Ultra arrived in late 2025. Ultra uses the same core hardware as the original, so existing Sphere owners could receive it. Sphere models are also larger than standard Infinio RIC models.
What Is the Difference Between Phonak Sphere I70 and I90?
The headline difference is Spheric Speech Clarity strength. This is the AI mode that separates speech from background noise. The I90 runs it at full strength, and the I70 runs it at medium strength.
Here’s how the two compare.
| Feature | Sphere I90 (Premium) | Sphere I70 (Advanced) |
|---|---|---|
| Spheric Speech Clarity | Full strength | Medium strength |
| Speech Enhancer | Yes | No |
| Fine-tuning channels | 20 | 20 |
| SpeechSensor | Yes | Yes |
| DEEPSONIC AI chip | Yes | Yes |
This comes from Phonak’s own feature summary and an independent review. Some reviewers describe the gap differently, so ask us exactly what your level includes.
Is the I90 Worth the Extra Cost Over the I70?
It depends on how demanding your listening life is. If you’re often in loud restaurants, meetings or family gatherings, the stronger AI may be worth discussing. If your days are mostly quiet, the I70 may already give you plenty.
Neither is a magic fix. Fit, programming and your own hearing profile matter at least as much as the level number.
How Do Phonak Sphere I70 and I90 Perform in Independent Tests?
HearAdvisor, an independent hearing aid lab, reports strong speech-in-noise results for the Sphere family. Own-voice and music streaming scores were more modest.
Some of the published figures are inconsistent, so we don’t quote exact numbers here. Reviewers also note that the AI mode can sound “tinnier” to some users. A professional fitting helps you tune that.
How Long Does the Phonak Sphere Battery Last?
Phonak claims up to 56 hours in ideal conditions, meaning quiet use without streaming. An independent review reports about 10 to 11 hours with continuous AI Sphere mode, up from about 7 on the original Sphere.
In everyday life, you’ll land somewhere in between. Streaming, AI mode and battery age all change the number.
What Are the Phonak Sphere I70 and I90 Prices at Ear Solutions?
Here are the ranges currently listed at Ear Solutions. Each page offers left, right or both, but doesn’t say whether the figure is per ear or per pair.
| Model | Listed price |
|---|---|
| Phonak Audéo Sphere Infinio I70 | $3,320 to $6,258 |
| Phonak Audéo Sphere Infinio I90 | $4,854 to $9,326 |
You can see the top level on its own page, the Phonak Audéo Sphere Infinio I90. The ranges are wide, so contact our team to confirm your exact price. Shipping is free in the US.
What Are the Pros and Cons of Phonak Sphere Infinio?
It’s a powerful, feature-rich hearing aid with a few trade-offs. Most of the cons are about size, price and early-stage connectivity.
| Pros | Cons |
|---|---|
| Strong speech in noise | Larger than standard RIC models |
| Long battery life in quiet use | Premium price |
| IP68 water and dust protection | No telecoil |
| Remote adjustments through the myPhonak app | Auracast not fully active yet |
| Easier maintenance with EasyGuard domes | May be more than a quiet lifestyle needs |
Which One Should You Choose: I70 or I90?
Choose based on your daily noise, your budget and how you want to feel at the end of the day. Here’s a quick guide.
| If this sounds like you | A reasonable starting point |
|---|---|
| Frequent noisy restaurants, meetings and gatherings | Ask about the I90 |
| Mixed days, some noise, some quiet | The I70 may be enough |
| Mostly quiet routines | Consider whether you need the Sphere line |
| Not sure about your hearing level | Start with a hearing check |
If you want a first read on where you stand, try our online hearing check. It’s free and takes a few minutes, but it’s a screening tool and doesn’t replace a clinical hearing test. If your hearing changed suddenly, or is much worse in one ear, see a medical professional before buying anything.
Conclusion
The Phonak Audéo Sphere Infinio I70 and I90 are closer than their price gap suggests. They share the same DEEPSONIC chip, the same 20 channels and the same rechargeable design, and the main difference is how strongly the AI works on speech in noise, plus the Speech Enhancer on the I90. If loud gatherings are a regular part of your life, the I90 deserves a close look. If you want strong technology without the top price, the I70 may be the more sensible fit. Either way, a hearing test and a proper fitting will tell you more than a spec sheet, and our team is happy to walk you through the choice.
Ready to Compare Sphere Models?
At Ear Solutions, we help you match a Phonak level to your hearing and your routine. Book a free consultation, and we’ll explain what each level offers and confirm current prices for you.
Call (888) 341-5952 or book an appointment online.
Frequently Asked Questions
What is the difference between Phonak Sphere I70 and I90?
The I90 runs Spheric Speech Clarity at full strength, while the I70 runs it at medium strength. Phonak also lists a Speech Enhancer on the I90 only. Both have 20 channels.
How much do Phonak Sphere I70 and I90 cost?
At Ear Solutions, the I70 is listed from $3,320 to $6,258 and the I90 from $4,854 to $9,326. The pages don’t say whether prices are per ear or per pair, so contact our team to confirm.
How long does the Phonak Sphere battery last?
Phonak claims up to 56 hours in ideal quiet conditions. An independent review reports about 10 to 11 hours with continuous AI Sphere mode, so real use falls in between.
Do Phonak Sphere hearing aids have a telecoil?
According to an independent review, no. Sphere models don’t include a telecoil.
Is the Phonak Sphere I90 better than the I70?
The I90 offers stronger AI speech processing and an extra Speech Enhancer. Whether that matters depends on how noisy your days are and your budget.
