Phonak Infinio Hearing Aids: New Models & Technology Levels (Updated 2026)

Phonak Infinio Ultra (Sphere) Hearing Aids

Since this article was first published in September 2024, Phonak has released the Infinio Ultra and Infinio Ultra Sphere (October 2025). The Ultra models use the same hardware as the originals but include a significant firmware upgrade. This article has been updated to reflect the current range.

This post discusses the latest models and technology levels available in the Phonak Infinio hearing aid range: Phonak Audéo Infinio Ultra, Audéo Infinio Sphere Ultra, and Phonak Virto R Infinio hearing aids. We explore the styles and technology currently available with Phonak Infinio hearing aids. Each Infinio model is available at different technology levels, which affect the price you pay. We break down each technology level to help you find which model and technology level is right for you.

Phonak Audéo Infinio Sphere Ultra R

The Phonak Audéo Infinio Ultra Sphere is a flagship prescription hearing aid celebrated for its breakthrough real-time Artificial Intelligence (AI) that separates speech from background noise. Designed for challenging, loud environments like restaurants and social gatherings, it features the DEEPSONIC chip to deliver standout speech clarity from all directions.

• Best for sound quality and hearing in all situations
• ERA Chip with AutoSense 7.0
• Spheric Speech Clarity 2.0
• AI Driven DEEPSONIC Chip 2.0
• Pair with up to 8 Bluetooth devices
• Rechargeable battery — up to 56 hours
• Available in 70 and 90 technology levels only
• Works with Roger microphones
• Waterproof (IP68 water and dust resistant)
• New EasyGuard wax protection
• Size may not suit everyone

Phonak Audéo Infinio Ultra R

The Phonak Audéo Infinio (Ultra) R is a receiver-in-canal (RIC) hearing aid for mild-to-profound hearing loss. The Ultra label refers to a major firmware update that boosts battery efficiency by 30%, upgrades the operating system, and simplifies Bluetooth pairing, all while using the same reliable hardware as the original Infinio.

• Best all-rounder for sound quality, size and comfort
• ERA Chip with AutoSense 7.0
• No AI DEEPSONIC chip
• Pair with up to 8 Bluetooth devices
• Rechargeable battery — up to 31 hours
• Available in 30, 50, 70 and 90 technology levels
• Waterproof (IP68 water and dust resistant)
• New EasyGuard wax protection
• Works with Roger microphones
• Smaller size than Sphere Infinio Ultra will appeal

Explore Infinio Ultra R

Phonak Virto Infinio Titanium

The Phonak Virto Titanium Infinio is a custom-moulded, in-the-ear hearing aid engineered from medical-grade titanium. Designed for optimal discretion, its durable shell is exceptionally thin and strong, making it highly resistant to damage and barely visible in the ear canal.

• Best for people looking for an invisible hearing aid
• ERA Chip with AutoSense 6.0
• No AI DEEPSONIC chip
• No Bluetooth wireless connectivity
• Non-rechargeable — size 10 battery
• Available in 70 and 90 technology levels only
• Made from Titanium for robustness and durability
• Waterproof (IP68 water and dust resistant)
• Sits deep in the ear canal for discreet, hidden wearing

Explore Virto Titanium

Phonak Virto Infinio R

The Phonak Virto Infinio R is a custom-crafted, in-the-ear (ITE) hearing aid, Phonak’s first fully rechargeable custom device. Powered by their advanced ERA chipset and AutoSense OS 7.0, it features universal Bluetooth streaming and a discreet, tailored design.

• Best custom in-ear option for those wanting rechargeable and wireless connectivity
• ERA Chip with AutoSense 7.0
• No AI DEEPSONIC chip
• Custom-made ITC — smallest rechargeable custom in-ear hearing aid available
• Pair with up to 8 Bluetooth devices
• Rechargeable battery — up to 30 hours
• Works with Roger microphones
• Available in 50, 70 and 90 technology levels
• IP68 water and dust resistant

Phonak Virto Infinio NW O

The Phonak Virto I-10 NW O is a custom-made, non-wireless in-the-ear hearing aid powered by the ERA chip. It is specially designed for people with mild to severe hearing loss who want a highly discreet, nearly invisible fit.

• Best for people wanting a discreet, custom-made hearing aid
• ERA Chip with AutoSense 6.0
• No AI DEEPSONIC chip
• No Bluetooth wireless connectivity
• Non-rechargeable — size 10 battery
• Available as IIC or CIC — Phonak will make as small as your ear canal allows
• Omni-directional microphone
• Roger compatible via neckloop with optional telecoil
• Available in 30, 50, 70 and 90 technology levels
• Waterproof (IP68 water and dust resistant)

Phonak Infinio CROS

The Phonak CROS Infinio is a specialised device designed for single-sided deafness (unilateral hearing loss). It picks up sounds from your unaidable ear and wirelessly transmits them to a compatible hearing aid in your better ear, allowing you to hear audio from both sides.

• A wireless sound transmitter, not a hearing aid
• Worn on the ear with no usable hearing
• Transmits sound wirelessly to the Audéo Infinio Ultra R only
• Rechargeable battery
• Waterproof (IP68 water and dust resistant)

About Phonak and the Release of Infinio Hearing Aids

Phonak is part of the Sonova Group, which includes the hearing aid manufacturers Unitron and Hansaton. Sonova was founded in 1947 and employs over 18,000 people worldwide. It is headquartered in Stäfa, Switzerland.

Phonak Infinio and Sphere Infinio were released in September 2024, superseding Phonak Lumity and Paradise hearing aids.

Custom-made in-the-ear Phonak Virto Infinio hearing aids — available as CIC or IIC in titanium or acrylic — were released in early 2025, followed by the rechargeable Virto Infinio R ITC in August 2025.

• In October 2025, Phonak released the Infinio Ultra firmware upgrade for the Audéo Infinio and Audéo Sphere Infinio ranges.
• New purchases are now sold as Audéo Infinio Ultra and Audéo Infinio Ultra Sphere.
• If you purchased Infinio or Infinio Sphere hearing aids before October 2025, your audiologist can apply the Ultra firmware upgrade in clinic at no cost.

What is the Phonak Infinio Ultra Upgrade?

Phonak’s October 2025 upgrade for Infinio Ultra delivered a significant firmware update applied to the existing Audéo Infinio and Audéo Infinio Sphere hardware.
Features include:

• Enhanced AI speech processing
• Significantly better battery efficiency
• Much easier daily maintenance without requiring new hardware
• Software upgrade but the physical hearing aids are identical to the original models

Pre October 2025 users of Infinio or Infinio Sphere hearing aids can receive the upgrade free of charge

AutoSense OS 7.0 – Smart automatic sound adjustment

The centrepiece of the upgrade is AutoSense OS 7.0:

• Developed using 18 times more real-world listening scenarios than AutoSense 6.0.
• 24% more precise environment detection and smoother automatic programme transitions.
• Sphere owners get an updated DEEPSONIC chip (version 1.0 to 2.0) with improved Spheric Speech Clarity.
• Spheric Speech Clarity 2.0 was developed using from over one million real-world hearing aid fittings.

Longer battery life

Battery efficiency improves by approximately 30% with the upgrade.

• Audéo Infinio Ultra R: battery delivers up to 31 hours of use.
• Audéo Infinio Ultra Sphere: battery delivers up to 56 hours of use. 
• Bluetooth connectivity: improved with one-step pairing to the myPhonak app and compatible devices. 
• Feedback manager: Phonak’s Target 11.1 fitting software is now substantially faster, completing in around 10 seconds.

New EasyGuard Domes

Phonak also introduced EasyGuard – a patented wax-protection dome system that reduces service visits by approximately 38%.

• EasyGuard domes prevent earwax from passing through the dome and blocking the wax filter at the end of the receiver.
• Blocked wax filters are among the most common causes of hearing aid malfunctions and the main reason customers need to visit their hearing care provider between scheduled appointments.
• EasyGuard domes are a replaceable consumable accessory compatible with all Phonak receivers, including 4.0, 5.0 and 6.0/
• All Infinio owners can benefit from improved wax protection without needing to purchase new hearing aids.
• You can buy EasyGuard domes from your hearing care provider or from Sound Hearing.

What is the difference between Infinio Ultra and Infinio Ultra Sphere?

The key difference between the Audéo Infinio Ultra and the Audéo Infinio Ultra Sphere is that the Sphere includes an additional dedicated AI chip, DEEPSONIC. All Infinio models feature the ERA chip running AutoSense OS 7.0, but only the Sphere also includes the DEEPSONIC chip, which powers Spheric Speech Clarity 2.0.

Phonak DEEPSONIC chip

The DEEPSONIC chip was trained using a Deep Neural Network (DNN) with 22 million sound samples. With the October 2025 Ultra upgrade, the DEEPSONIC chip was updated from version 1.0 to 2.0, trained on data from over one million real-world fittings gathered during the first year of the product’s life.

Spheric Speech Clarity

Spheric Speech Clarity 2.0 automatically activates in background noise and instantly separates speech from noise in real time from any direction, delivering up to a 10.2 dB improvement in signal-to-noise ratio and reducing listening effort by up to 35% compared to traditional beamforming approaches.

Phonak claims that Spheric Speech Clarity 2.0 doubles the likelihood of clean, clear speech in complex listening situations compared to standard directional processing.

Hearing aid size

Phonak Infinio Ultra Sphere hearing aids are slightly larger than Infinio Ultra hearing aids due to the inclusion of the second DEEPSONIC chip. Your hearing care professional should be able to show you both styles so you can compare, and they will advise which is most suitable for your ear size and lifestyle.

Infinio Technology Levels

When Phonak develops a new product, it generally releases it in four technology levels. The product components and casing are all the same; the difference is the software loaded onto the device.

The difference in software affects how the hearing aid performs in background-noise situations with multiple voices.

The hearing aid’s performance in quiet situations will be similar at all technology levels.

Phonak has followed the same technology labelling as previous Phonak hearing aid models:

• Premium – 90
• Advanced – 70
• Standard – 50
• Essential – 30

Phonak Infinio Ultra Sphere is only available in technology levels 70 and 90.

Which Phonak Infinio Hearing Aid should I buy?

The answer will depend on where you buy the hearing aids and the hearing care professional you see.

At Sound Hearing, we always try to find the best hearing aids for your budget. Our experience has taught us that to have a successful outcome, we need to get three things correct when helping a customer choose hearing aids:

• Style / Size – a hearing aid that you will be happy to wear
• Listening needs – a hearing aid that meets your level of hearing loss and listening needs
• Budget – a hearing aid that is within your budget

Considering these three things will help you choose the best Infinio hearing aid for you.

The first step

Finding the right hearing aids begins with a hearing assessment. After the tes, our hearing care professional will help you choose the best Phonak Infinio hearing aids that fit your needs and budget.

Many people instinctively want Infinio Titanium, the smallest hearing aid; however, it uses small, size 10 batteries that need to be changed every 4 to 5 days. Will your eyesight and dexterity allow you to easily change the batteries and remove and insert the hearing devices?

Technology

Often, people feel they need to buy top-of-the-range technology, or their hearing care professional may recommend it, such as the Infinio Ultra Sphere 90.

In a utopia where we all have unlimited budgets, then sure, purchase Infinio Ultra Sphere 90; however, consider that the AI features in Sphere only automatically turn on in loud background noise situations. How often are you likely to be in these environments?

Some of our customers spend nearly all their time at home in quiet environments. If you buy Ultra Sphere 90, the AI features may never be activated.

Other customers may have lifestyles in which they deal with complex, noisy environments daily and should consider the best technology their budget allows.

What our customers prefer

Most Sound Hearing customers choose Infinio Technology level 50 or 90.

For those with quieter lifestyles, some additional technology is still needed to reduce noise when dining out or visiting friends and family.

Compared to Infinio 30, the Infinio 50 Autosense program includes a Comfort in Noise and Speech in Car program, which many people find useful. It improves listening comfort and helps them follow conversations in cars. Technology level 50 also includes the Soundrelax feature, which identifies and reduces sudden loud, unwanted sounds.

Customers seeking premium technology and the best listening experience in all situations choose technology level 90 over 70. The price difference between the products is relatively small. And most customers seem prepared to spend a little extra to get Phonak’s premium product.

Why do manufacturers release different technology levels?

If we assume that the only difference between the Phonak Infinio hearing aids is the software loaded onto them, why do they not just release one model, 90? The 30, 50 and 70 are the same hearing aids as the 90, though with the lower models, technology and features are removed, the cost of production is likely to be the same for each model.

Phonak and all other hearing aid manufacturers likely offer a choice of technology levels for commercial reasons. When given a choice of options and prices, people are more likely to purchase. Research shows that when given only one option, people can experience “single option aversion” and are less likely to buy, as it triggers an automatic desire to seek more options. Too many choices lead to confusion and hesitation, making people less satisfied with their decisions.

Offering 3 to 5 hearing aid options seems to be the right number to enable people to make a decision. Though this may at first glance appear commercially cynical, do consider that hearing aid manufacturers are motivated to make the best hearing products they can, have considerable research and development budgets, and offering people the right number of choices helps nudge people to improve their hearing health, which enhances quality of life.

What do you do if you feel pressured to spend over your budget?

Please be aware that when you are looking for hearing aids, some hearing care professionals may always recommend top-of-the-range models, regardless of your lifestyle or budget. If you feel pressured to make a quick decision outside your budget, take a breath, ask for a quote, and leave, advising that you will consider your options. If offered extra discounts for buying now, you could consider this a ‘red flag’.

Phonak Infinio Ultra Models available from Sound Hearing

Phonak Audéo Infinio Ultra Sphere R Hearing Aid

• Price: Sound Hearing supplies Phonak Audéo Infinio Ultra Sphere R hearing aids from £2881.50 (pair).
• Free trial period: try our hearing aids at home
• 60-day money-back guarantee
• 5 year warranty.

Features

• A Receiver in the Ear prescription hearing aid with a rocker switch for adjusting volume, programme changes and answering phone calls.
• Double-Tap Controls for answering phone calls and starting/stopping streaming.
• IP68 rating for water and dust resistance.
• A choice of colours

Key Hearing Technology

• Available in two technology levels, Premium 90 and Advanced 70.
• The ERA Chip handles core sound processing and connectivity functions.
• The DEEPSONIC Chip 2.0, powered by Artificial Intelligence (AI), instantly separates speech from noise to improve speech understanding with less listening effort. Trained on data from over one million real-world fittings.
• AutoSense OS 7.0 with Spheric Speech Clarity 2.0. AutoSense constantly analyses the sound landscape and automatically changes the hearing aid programmes and settings to maximise sound quality. Trained on 18 times more real-world listening scenarios than AutoSense 6.0, delivering 24% more precise environment detection.
• Spheric Speech Clarity 2.0 automatically adapts to background noise and uses the DEEPSONIC chip and AI to achieve up to 10.2 dB of signal-to-noise ratio improvement.

Connectivity

• Enhanced Bluetooth — universally connects up to 8 Bluetooth devices, with two simultaneously.
• The ERA chip enables uninterrupted hands-free calls and streaming up to twice the range of previous Phonak Bluetooth models.
• The myPhonak App allows you to adjust volume control and programme settings.
• Phonak Accessories: TV Connector, Phonak PartnerMic, Phonak Remote Control and Roger Microphones.

Customisation and Fitting

• Phonak EasyGuard Domes — compatible with Phonak receivers 4.0, 5.0 and 6.0
• Phonak Domes 4.0
• Phonak 6.0 Receiver Wire
• SlimTips and cShell custom earmoulds
• ActiveVent™ — intelligent hearing aid receiver, automatically switches between an open and closed vent. It eliminates the traditional compromise between the naturalness of an open fit and the enhanced acoustics of a closed fit.
• APD 3.0 — Phonak’s fitting prescription.
• Suitable for mild, moderate and most severe hearing loss.

Rechargeable Batteries and Chargers

• Up to 56 hours on a single charge
• Click for Charging Options

Key Charging Milestones

• 15 Minutes = up to 3 hours of emergency use
• 30 Minutes = 20% battery capacity
• 90 Minutes = 80% battery capacity
• 3 Hours = 100% battery capacity

See Sound Hearing’s prices for different technology levels of Phonak Infinio Ultra Sphere R hearing aids.

Expert Fitting Advice

After fitting many Audéo Infinio Ultra Sphere hearing aids, we have found in our follow-up appointments that some customers are not getting the most out of the AI DEEPSONIC chip and Spheric Speech Clarity 2.0.

If you already have these hearing aids and are hoping for better performance in background noise, visiting your hearing care professional and reviewing your datalogging may help. Your hearing aids log how long they have been worn and which programmes have been activated.

In the image above, you can see that this customer used the hearing aids’ automatic program 100% of the time they were wearing them. The Speech in Loud Noise program had only been activated 1% of the time. The customer reported that they had occasionally been in noisy situations and, though they could hear speech, they hoped for less listening effort.

To address the customer’s feedback and improve performance, we adjusted settings in Phonak’s fitting software, Target. In the image above, you can see the activation level option and a slider to the right. The default setting is in the centre, with Loud Noise written below it — this means Spheric Speech Clarity 2.0 activates when background noise reaches 65 dB. We reduced the activation level so the program engages earlier, in quieter background noise.

We also added the Spheric Speech in Loud Noise program as a manual option, which the customer could activate at any time via the hearing aid rocker switch or the myPhonak app. As this customer is a music lover, we also added a dedicated music program, which we fine-tuned with the customer while music was playing.

Expert Summary — Phonak Audéo Infinio Ultra Sphere

The Phonak Audéo Infinio Ultra Sphere is Phonak’s flagship hearing aid, designed for users who want to give themselves the best possible chance of understanding speech in any listening environment.

For those who prefer not to adjust their hearing aids manually, AutoSense OS 7.0 manages everything automatically, seamlessly switching between programmes as the listening environment changes.

For users who want more control, the myPhonak app and a wide range of compatible accessories offer extensive personalisation and connectivity options.

The only difference between the Infinio Ultra Sphere 70 and 90 is that the 70 model lacks the Speech Enhancer feature. This feature works in quieter environments and enhances soft or distant speech. Sound Hearing has found that nearly everyone who chooses the Infinio Ultra Sphere selects the 90 — the price difference between the two is relatively small, and most customers prefer the premium option.

We have found that the size of these hearing aids has led some customers to choose an alternative. Incorporating two chips increases the device’s size, and customers with smaller ears or shorter hair have sometimes opted for the smaller Audéo Infinio Ultra range instead.

Compare Phonak Audéo Infinio Ultra Sphere Features — which technology level is right for me?

Phonak Audéo Infinio Ultra R Hearing Aid

Sound Hearing can provide the Phonak Audéo Infinio Ultra R hearing aids from £1950 a pair. Our hearing aids have a free trial period, a 60-day money-back guarantee, and a 5-year warranty.

Please click here for our product page. Please click here to book a home hearing test.

Physical Properties

• A Receiver in the Ear prescription hearing aid with a rocker switch for adjusting volume, programme changes and answering phone calls.
• Double-Tap Controls to answer phone calls and start/stop streaming.
• IP68 rating for water and dust resistance.
• Smaller and lighter than the Audéo Infinio Ultra Sphere.
• See hearing aid colours.

Key Hearing Technology

Available in four technology levels: Essential 30, Standard 50, Advanced 70 and Premium 90.

• The ERA Chip handles core sound processing and connectivity functions.
• No DEEPSONIC Chip — for AI-driven speech separation in noise, see the Audéo Infinio Ultra Sphere.
• AutoSense OS 7.0 continuously analyses the sound environment and automatically adjusts hearing aid programmes and settings to maximise sound quality. Trained on 18 times more real-world listening scenarios than AutoSense 6.0, delivering 24% more precise environment detection.

Connectivity

• Enhanced Bluetooth — universally connects up to 8 Bluetooth devices, with two simultaneously.
• The ERA chip enables uninterrupted hands-free calls and streaming up to twice the range of previous Phonak Bluetooth models.
• Compatible with CROS Infinio for single-sided deafness.
• The myPhonak App allows you to adjust volume control and programme settings.
• Phonak Accessories: TV Connector, Phonak PartnerMic, Phonak Remote Control and Roger Microphones.

Customisation and Fitting

• Phonak EasyGuard Domes — compatible with Phonak receivers 4.0, 5.0 and 6.0
• Phonak Domes 4.0
• Phonak 6.0 Receiver Wire
• SlimTips and cShell custom earmolds
• Activent
• APD 3.0 — Phonak’s fitting prescription.
• Suitable for mild, moderate and most severe hearing loss.

Rechargeable Batteries and Chargers

• Up to 31 hours on a single charge
• Click for charging options.

For Sound Hearing prices for the Phonak Virto Infinio, please click here

Expert Fitting Advice

All Phonak Infinio Hearing Aids are sophisticated medical devices. A hearing aid professional should fit them in person at a clinic or in your home. It is not recommended to purchase them online and have them posted to you. Phonak Hearing aids can be fitted with replaceable domes or custom tips and earmolds. Many customers receive improved hearing aid performance and retention in the ear with a custom fitting.

Compare Phonak Audéo Infinio Ultra R features, which technology is right for me?

Phonak Virto Infinio Titanium and Virto Infinio NW O

Sound Hearing can provide the Phonak Virto Infinio hearing aids from £2295 a pair. Our hearing aids come with a free trial period, a 60-day money-back guarantee, and a 5-year warranty.

Please click here for our product page. Please click here to book a home hearing test.

This section covers two non-wireless custom in-ear hearing aids from the Infinio range: the Virto Infinio Titanium and the Virto Infinio NW O (non-wireless, omnidirectional). The main difference between the two is the material they are made from — the Titanium uses a medical-grade titanium shell, while the NW O uses hard acrylic.

The Virto Infinio Titanium is available only in 70 Advanced and 90 Premium technology levels. The Virto Infinio NW O is available across all four technology levels.

Neither model receives the AutoSense 7.0 firmware upgrade — both run AutoSense 6.0. This is due to their ultra-small size, which does not support the full firmware package. This does not affect their core sound quality performance.

Titanium Shell: The shell is made of medical-grade Titanium, which is 15 times stronger and 1/3 the thickness of acrylic — the standard hearing aid shell material. This allows the hearing aid to be made smaller and more durable.

Custom Fit: Virto Infinio hearing aids are custom-made. A hearing professional must take an impression or scan of your ear, which is then sent to Phonak, who will design and manufacture the hearing aid to fit your ear exactly. Phonak uses Biometric Calibration, which uses an ear impression or scan to customise both the shell and the hearing aid’s directional performance.

Phonak does not describe the Virto Infinio Titanium or NW O as IIC or CIC — instead, they try to make the smallest possible hearing aid that your ear canal anatomy allows.

Physical Properties

• Custom-made hearing aid — manufactured to fit your ear canal exactly.
• Push button for programme and volume change.
• IP68 rating for water and dust resistance.
• Click for colour options.

Key Hearing Technology

Virto Infinio NW O is available in four technology levels: Essential 30, Standard 50, Advanced 70 and Premium 90. Virto Infinio Titanium is available only in Advanced 70 and Premium 90.

• The ERA Chip handles core sound processing functions.
• No DEEPSONIC Chip — no AI-driven speech separation in noise.
• AutoSense 6.0 continuously analyses the sound environment and automatically adjusts hearing aid programmes and settings to maximise sound quality. Note: these models do not receive the AutoSense 7.0 upgrade.
• Omni-directional microphone — no directional microphone capability.

Connectivity

• No Bluetooth connectivity.
• No, myPhonak App compatibility.
• No compatibility with Phonak wireless accessories.
• Roger microphone compatible via optional telecoil and Roger Neckloop only.

Customisation and Fitting

APD 3.0 — Phonak’s fitting prescription.

Suitable for mild, moderate and most severe hearing loss.

Batteries

• Non-rechargeable.
• Uses zinc air size 10 batteries, lasting approximately 4 to 5 days.

Compare Phonak Virto Infinio Titanium and NW O Features — which technology level is right for me?

*Severe hearing loss — some people with severe or profound hearing loss may not be suitable for these hearing aids. Your hearing care professional can advise you on alternatives.

**We strongly recommend you do a hearing test to help decide which hearing aids will best meet your listening needs. For the best results, your new hearing aids should be professionally fitted and adjusted according to your specific needs.

Expert Fitting Advice

Although custom hearing aids are suitable for mild hearing loss, some people feel their ears are blocked and experience a hollow, echoing sound when they speak.

This is called occlusion. It occurs when a hearing aid blocks the ear canal, causing low-frequency sounds transmitted through the bones and tissues of the head — such as your own speech, swallowing, or chewing — to become amplified and trapped in the ear canal.

To overcome the occlusion effect, hearing aids are built with a vent channel to allow low-frequency sounds to escape the ear canal.

However, if low-frequency hearing is normal or only mildly reduced, the occlusion effect may persist. In some cases, if the ear canal is too narrow, there may not be enough space to build sufficient venting.

The Virto Infinio Titanium and NW O use omnidirectional microphones rather than directional microphones.

Omnidirectional microphones capture sound equally from 360 degrees around the wearer, rather than focusing on sounds originating from a specific direction.

Directional microphones prioritise sounds from a specific direction – usually from in front – while reducing sounds from other directions. This is particularly beneficial in background noise.

Customers who regularly need to hear speech in noisy environments may find the Audéo Infinio Ultra R or Audéo Infinio Ultra Sphere better suited to their needs because of the dual mic and Spheric Speech Clarity features.

Phonak Audeo Infinio Rechargeable CROS

• What is it? A CROS (contralateral routing of sound) device is designed for people with asymmetrical or unilateral hearing loss who have unusable hearing in one ear.
• What does it do? The user wears the CROS transmitter in the ear with no functional hearing and a hearing aid in the better ear. The CROS has microphones that pick up sounds and transmit them to the hearing aid.
• Compatibility: CROS hearing devices come in one technology level and are only compatible with Phonak Audéo™ Infinio Rechargeable hearing aids (technology levels: 90, 70, 50 and 30).
• Waterproof: The Phonak Audeo Infinio Rechargeable CROS has an IP68 rating (dust and water resistant).

Expert Advice

A CROS hearing device should be considered if you have no detectable hearing in one ear.

If you have asymmetrical hearing loss, where the bad ear may have severe hearing loss, a CROS or hearing aid may be the best solution.

To determine which solution will work best for you, your hearing aid professional should conduct a speech test in each ear separately.

• If the results show you can understand words with amplification in the worse ear, then a hearing aid in this ear should provide benefit.
• If the results show poor or no speech recognition in the worse ear with amplification, the CROS is likely your best option.

Phonak Virto Infinio R

Sound Hearing can provide the Phonak Virto Infinio R hearing aids from £2295 a pair.

Our hearing aids come with:

• free trial period
• 60-day money-back guarantee
• 5-year warranty

The Phonak Virto Infinio R is the smallest rechargeable custom in-ear hearing aid Phonak has ever made — and one of the smallest on the market.

It delivers full-featured performance on a par with the Audéo Infinio Ultra R, in a discreet custom-made shell designed to fit your ear canal exactly.

Physical Properties

• A custom-made ITC or ITE half or full shell hearing aid — Phonak will make it as small as possible, depending on your ear canal anatomy.
• Built using Biometric Calibration — Phonak uses advanced imaging technology to predict how sound waves interact with your ear, designing the shell to minimise sound leakage and maximise sound quality.
• IP68 rating for water and dust resistance.
• Tap controls to answer calls and start / stop streaming.
• Click for colour options.

Key Hearing Technology

Available in three technology levels: Essential 30, Standard 50, Advanced 70 and Premium 90.

• ERA Chip handles core sound processing and connectivity functions.
• No DEEPSONIC Chip — for AI-driven speech separation in noise, see the Audéo Infinio Ultra Sphere.
• AutoSense OS 7.0 – continuously analyses the sound environment and automatically adjusts hearing aid programmes and settings to maximise sound quality. Trained on 18 times more real-world listening scenarios than AutoSense 6.0, delivering 24% more precise environment detection.
• Directional Microphones – deliver improved speech understanding in background noise.

Connectivity

• Enhanced Bluetooth – Universally connects up to 8 Bluetooth devices, with two simultaneously.
• ERA chip – Enables uninterrupted hands-free calls and streaming up to twice the range of previous Phonak Bluetooth models.
• myPhonak App – allows you to adjust volume control and programme settings.
• Roger Microphones – Works directly via RogerDirect.
• Phonak Accessories – TV Connector, Phonak PartnerMic and Phonak Remote Control.

Customisation and Fitting

• Custom-Made Shell — Requires an ear impression or scan during your fitting appointment.
• APD 3.0 — Phonak’s fitting prescription.
• Suitability — mild, moderate and most severe hearing loss cases.

Rechargeable Battery and Charger

• Rechargeable — Up to 30 hours of use on a single charge.
• Charging Time — Fully charged in approximately 3 hours.
• Snap and Charge System — The hearing aids magnetically attach to the charging points when placed in the charger.

Compare Phonak Virto Infinio R Features — which technology level is right for me?

*Severe hearing loss — some people with severe or profound hearing loss may not be suitable for these hearing aids. Your hearing care professional can advise you on alternatives.

*Severe hearing loss — some people with severe or profound hearing loss may not be suitable for these hearing aids. Your hearing care professional can advise you on alternatives.

Expert Fitting Advice

The Phonak Virto Infinio R is an excellent option for people who want the discretion of a custom in-ear hearing aid without sacrificing wireless connectivity or rechargeable convenience. It delivers performance comparable to the Audéo Infinio Ultra R but in a smaller, more discreet form factor.

As with all custom in-ear hearing aids, occlusion can be a consideration for people with normal or near-normal low-frequency hearing. Your audiologist will assess this at the fitting stage and build appropriate venting into the shell where ear canal size permits.

Unlike the non-wireless Virto Infinio Titanium and NW O, the Virto Infinio R features directional microphones, making it a much stronger performer in background noise. It is the most capable custom in-ear option in the Infinio range for customers who need hearing support in challenging listening environments.

Phonak Infinio Chargers

Phonak Infinio hearing aids use specific, model-matched charging docks that feature magnetic retention and USB-C connectivity. Standard versions and heavy-duty Sphere variants require different docks.

Phonak ChargerGo RIC Infinio

• Suitable for Audéo Infinio Ultra R and Audéo Infinio Ultra Sphere
• Built-in battery for on-the-go charging — no power socket needed
• Fully charges hearing aids in 3 hours
• Magnetic snap-in retention for easy insertion and removal
• Compact and portable — ideal for travel

Phonak Charger RIC Infinio

• For Audéo Infinio Ultra R and Infinio CROS
• No built-in battery — comes with USB-C power source and UK plug
• Easy to insert and remove with Magnetic retention of Hearing Aids

Phonak Charger Virto Infinio Snap & Charge Case

• For Phonak Virto Infinio R only
• No built-in battery — comes with USB-C power source and UK plug
• Fully charges hearing aids in 3 hours
• Magnetic snap-in retention for easy insertion and removal
• Custom case designed specifically for the Virto R in-ear form factor

Phonak Infinio Colours

Phonak Infinio is advertised as available in beige, Atlantic green, champagne, chestnut, copper, graphite grey, sandalwood, sand beige, sienna red, silver grey, and velvet black.

In 2026, the colours available to order are:

• Sand beige – P1
• Sandalwood – P3
• Chestnut – P4
• Champagne – P5
• Silver Gray – P6
• Graphite Gray – P7
• Velvet Black – P8

*P and number is the code Phonak assigns to the colour.

Phonak Virto Colours and Shell Options

Phonak Virto Infinio hard acrylic hearing aids come in the following colours: pink, tan, cocoa, brown, and black. The hearing aid shell can also be made transparent or red and blue, which can help identify whether the hearing aid is on the right (red) or left (blue).

Phonak Virto Infinio Titanium Colours

Virto Tiranium offers 3 faceplate colours: black, cocoa, and pink.

Phonak Infinio Bluetooth and Wireless Accessories

Phonak Infinio AI-powered hearing aids feature universal Bluetooth connectivity and wireless accessories. These accessories seamlessly stream audio, enhance speech clarity over distance, and allow easy device control.

Phonak TV Connector

• Phonak TV Connector — a plug-and-play wireless transmitter that sends crystal-clear, real-time stereo audio from your television directly to your compatible Phonak hearing aids.
• It effectively turns your hearing aids into wireless stereo headphones with an operational range of up to 15 meters (50 feet).
• The plug-and-play connector works with TVs and other audio sources to support direct hearing aid connectivity to Infinio, Lumity, Paradise, and Marvel hearing aids.

For Phonak Accessories user instruction manuals, see the Phonak website.

Phonak PartnerMic

• Phonak PartnerMic — a discreet microphone that attaches to your partner’s lapel to improve hearing during one-on-one conversations.
• With direct connectivity, you can benefit from clear speech streamed directly to your Infinio, Lumity, Paradise, or Marvel hearing aids. This helps users better understand speech across various listening situations.
• Battery life is up to 6 hours.

Phonak Remote Control

• Phonak Remore Control — Easily raise or lower the volume of your hearing aids.
• Cycle through different environmental listening programs programmed by your audiologist.
• Quickly activate compatible external devices like the Phonak TV Connector.
• Excellent alternative for people who do not use a smartphone but still want tactile control over their hearing aids.
• Discreetly modify your listening experience while the remote is hidden in a pocket or purse.

Phonak Roger ON™ V3

• Roger On™ V3 — Phonak’s latest microphone for everyday use in noisy environments and over distance.
• It bridge the gap in hearing ability when background noise is present and when the listening range is more than 2 metres from the speaker.
• Rechargeable with an 8-hour battery life.