Senior Audiologist • 11/9/2026
If you’ve been told you need a premium hearing aid and your main problem is noise, two names will come up again and again: Signia MaX and Phonak Audéo Sphere Infinio. Both are rechargeable receiver-in-canal aids. Both lean heavily on AI to pull speech out of a noisy room. And both cost about as much as a small car.
They go about the job in different ways, though, and the price gap is bigger than most people expect. Here’s how they compare on price, AI, battery, Bluetooth and fit, using official India MRPs.
| Signia Pure Charge&Go MaX | Phonak Audéo Sphere Infinio | |
|---|---|---|
| Launched in India | 23 October 2026 | Listed in Phonak’s June 2026 India price list |
| AI approach | Four deep neural networks working together (Acoustic Intelligence) | One dedicated AI chip (DEEPSONIC) for separating speech from noise |
| Levels in India | 7, 5, 3 | 90, 70 |
| Top-level price (pair) | ₹10,00,000 | ₹8,75,000 |
| Battery (brand claim) | Up to 30 hours, even with streaming | Run time depends on how long the AI mode is on |
| Bluetooth | Bluetooth Classic and LE Audio; Auracast via update in first half of 2027 | Universal Bluetooth (works with almost any phone); LE Audio and Auracast-ready |
| Style | Receiver-in-canal (RIC), rechargeable | Receiver-in-canal (RIC), rechargeable |
Phonak Sphere is cheaper at both levels where the two overlap. A pair of Sphere I90 costs ₹1,25,000 less than a pair of Signia 7 MaX, and the advanced levels are about ₹1,10,000 apart for a pair.
| Level | Signia MaX single | Signia MaX pair (Kit) | Phonak Sphere single | Phonak Sphere pair (Kit) |
|---|---|---|---|---|
| Premium | ₹6,00,000 (7 MaX) | ₹10,00,000 | ₹4,55,500 (I90) | ₹8,75,000 |
| Advanced | ₹4,19,990 (5 MaX) | ₹6,99,990 | ₹3,13,000 (I70) | ₹5,90,000 |
| Standard | ₹2,69,000 (3 MaX) | ₹4,49,990 | Not offered | Not offered |
Two things change the maths. Signia offers a lower 3 MaX level from ₹2,69,000 per ear, which Sphere doesn’t have. And the bundles differ: Signia’s Kit includes a portable charger, while Phonak’s single-unit price already includes its ChargerGo case.
For every Signia MaX model and accessory price, see our Signia MaX launch guide. For the full Phonak Infinio range, read the Phonak Audéo Infinio price guide.
This is the real difference between the two, and it’s worth understanding before you spend this kind of money.
Signia MaX uses what Signia calls Acoustic Intelligence: four separate deep neural networks, each handling one job. One tracks the people you’re talking to, one keeps your own voice natural, one reads the room, and one decides which background noise to turn down. The idea is to handle a lively group, where people talk over each other and move around.
Phonak Sphere puts a dedicated AI chip, called DEEPSONIC, inside the hearing aid. Phonak says it has 53 times the computing power of its previous generation and was trained on 22 million sound samples. Its main job is to separate speech from noise in real time, and you can switch it on or adjust its strength from the app.
Put simply: Signia is aiming at following a group conversation as a whole. Phonak is aiming at pulling clean speech out of loud noise, with a feature you can turn up when you need it.
Both brands publish strong claims, and both come from their own research. Signia says 97% of wearers did better with MaX in noisy group conversations than with key competitor devices. Phonak says Sphere users are up to three times more likely to understand every word from any direction, compared with two key competitors, and quotes a 10 dB improvement in signal-to-noise ratio.
We don’t have an independent head-to-head test of these two specific models to point you to. What we see in practice is that people’s hearing loss, ears and daily routine matter as much as the chip. The only reliable test is your own: wear each one in the place you struggle most, like a family dinner, a busy office or a restaurant.
Signia says Pure Charge&Go MaX runs up to 30 hours on a charge, even with streaming. A full charge takes about four hours, and 30 minutes gives up to six hours. The Kit’s pocket charger holds up to four full charges for a pair.
Phonak’s run time depends heavily on how long the AI speech mode is switched on, because the DEEPSONIC chip uses extra power. Phonak’s ChargerGo case (included with the single-unit price, or ₹18,000 on its own) has a built-in battery for charging on the move.
If you spend long days in noisy places with the AI on, ask us to set both up and check real run time on your own routine during the trial.
Phonak has the edge for Android users today. Its universal Bluetooth works with almost any phone, iPhone or Android, much like a normal Bluetooth headset. Phonak also lists Bluetooth LE Audio support and says Sphere is Auracast-ready.
Signia MaX uses Bluetooth Classic and LE Audio, has a telecoil for loop systems, and is due to get Auracast through a firmware update in the first half of 2027. Phonak’s Sphere RIC models don’t have a telecoil.
Not sure how hearing aids connect to your phone? Our Bluetooth hearing aids guide explains MFi, ASHA, Bluetooth Classic and Auracast in plain terms.
Both cover a wide range. Signia MaX fits from 10 to 115 dB depending on the receiver. Phonak Sphere comes with four receivers, from S for mild to moderately-severe loss up to UP for moderate to profound loss. For most people with mild to severe loss, either will work. Your audiologist will pick the receiver from your hearing test.
Phonak has started selling an updated Infinio Ultra Sphere in some countries. The Phonak India price list we use (June 2026) lists the Audéo Sphere Infinio I90 and I70 shown here. If a newer version reaches India, prices and specifications may change, so ask us for the current model when you book.
If you’re also looking at older or mid-range models, see Signia Pure Charge&Go IX vs Phonak Audéo Lumity and our wider Phonak vs Signia vs Oticon comparison.
Neither is better for everyone. Signia MaX is built around following group conversations and offers a cheaper 3 MaX level. Phonak Sphere focuses on clearing speech out of loud noise and has universal Bluetooth. A side-by-side trial is the best way to decide.
According to Phonak’s June 2026 India price list, Sphere I90 costs ₹4,55,500 per unit (with ChargerGo) or ₹8,75,000 per kit of two. Sphere I70 costs ₹3,13,000 per unit or ₹5,90,000 per kit.
Signia MaX starts at ₹2,69,000 for a single 3 MaX and goes up to ₹10,00,000 for a Kit (pair) of 7 MaX, per Signia’s India price list effective 23 October 2026.
Phonak Sphere, because its universal Bluetooth works with almost any phone. Signia MaX works with many phones too, but check your model first.
Signia claims up to 30 hours for MaX, even with streaming. Phonak Sphere’s run time depends on how long its AI speech mode is on.
Phonak says Sphere is Auracast-ready. Signia MaX is due to get Auracast through a firmware update in the first half of 2027.
Yes. At Insono we can fit both after a free hearing test so you can compare them in your own daily routine.
Single-unit prices are for one ear. Kit prices are for a pair. Most people with hearing loss in both ears need a pair.
The best way to choose between two premium hearing aids is to wear both. Book a free hearing test and a trial with us.
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