Infinio Ultra is the clear choice, scoring 4.4/5 on HearAdvisor's tuned speech-in-noise test versus 1.3/5 for Vivia. That's a large, consistent margin that reflects Phonak's Sphere mode, built specifically for loud, chaotic environments.
Phonak Audéo Infinio Ultra vs. ReSound Vivia
Check out our comparison of the Phonak Audéo Infinio Ultra vs ReSound Vivia. Listen to audio samples and see how the two hearing aids differ in terms of sound performance, features, accessories, and more.
Published Updated
Quick Verdict
AI summarizedSummarized with AI assistance from our human-researched product information, in-lab testing, objective sound measurements, and expert ratings.
This comes down to how much you value hearing well in noise: Infinio Ultra posts a lab-verified speech-in-noise score nearly four points higher than Vivia's, while Vivia counters with a smaller shell and a lower price.
Audéo Infinio Ultra
Choose the Phonak Audéo Infinio Ultra if speech clarity in loud, noisy places is your top priority and you're willing to pay roughly $800 more for a lab-verified speech-in-noise score of 4.4/5, well above the site-wide average.
Vivia
Choose the ReSound Vivia if you want a smaller, more streamlined design and the lowest price of this pair, but go in knowing its lab-measured speech-in-noise score (1.3/5) is well below the site-wide average and below Infinio Ultra's.
What actually separates them
AI summarizedSpeech-in-noise performance
Lab measuredInfinio Ultra measured 4.4/5 in HearAdvisor's tuned lab testing, far above the site-wide average, while Vivia measured just 1.3/5 in the same condition — a large, buyer-relevant gap for anyone who struggles in restaurants or group settings.
Price
PriceVivia is the cheaper of the two by roughly $800 per pair, which matters if noise performance isn't your main concern.
Design and size
Expert ratingOur review team scored Vivia 5.0/5 on design versus 4.1/5 for Infinio Ultra, reflecting Vivia's smaller microRIE shell versus the bulkier dual-chip Infinio Ultra body.
Fine-tuning range at the fitting
SpecInfinio Ultra offers more adjustment bands (20) than Vivia (14), giving your audiologist finer gain control across the frequency range during programming.
Product Overview
Audéo Infinio Ultra
Vivia
Form Factor
Expert Rating
Score
4.5
Score
4.2
User Rating
3.47 reviews
4.38 reviews
Hearing Loss Level
MildModerateSevere
MildModerateSevere
Product Features
Hands-freeRechargeableiPhoneAndroidIP68
Hands-freeRechargeableiPhoneAndroidIP68
Expert Ratings
Compare comprehensive test results and expert opinions.
Audéo Infinio Ultra
Vivia
HearingTracker Score
Audéo Infinio Ultra
4.5EXCELLENT
Phonak’s Infinio Sphere delivers genuinely standout speech clarity in loud, noisy places thanks to its DEEPSONIC “Sphere mode,” but you’ll trade some discretion and may wrestle with fit or Bluetooth pairing to get that top-tier performance.
Read full reviewVivia
4.2ABOVE AVERAGE
ReSound Vivia packs flagship AI processing into one of the smallest microRIE designs we’ve tested, delivering crisp sound in quiet, excellent all-day battery life, and best-in-class LE Audio/Auracast connectivity, even if its AI noise reduction isn’t as dominant as the marketing suggests in the toughest listening environments.
Read full reviewHearAdvisor SoundScore
Audéo Infinio Ultra
4.9EXCELLENT
Phonak Sphere Infinio Ultra achieved a SoundScore of 4.9/5 and a SoundGrade of A in HearAdvisor lab testing. It ranked #3 of 39 Prescription Hearing Aid devices tested. The Prescription Hearing Aid category average SoundScore was 4.19/5.
Vivia
3.9AVERAGE
Resound Vivia 9 60S microRIE achieved a SoundScore of 3.9/5 and a SoundGrade of B in HearAdvisor lab testing. It ranked #29 of 39 Prescription Hearing Aid devices tested. The Prescription Hearing Aid category average SoundScore was 4.19/5.
Build Quality
Audéo Infinio Ultra
5.0EXCELLENT
Phonak Audéo Sphere Ultra have an excellent build quality with a robust, portable charging case and a high ingress rating of IP68.
Vivia
5.0EXCELLENT
Resound Vivia microRIE have an excellent build quality with a robust, portable charging case and a high ingress rating of IP68.
Battery
Audéo Infinio Ultra
4.6EXCELLENT
Ultra is designed to deliver all-day use, with battery-life figures of up to 56 hours under ideal conditions (i.e., in quiet with no streaming) and about 10-11 hours when Sphere mode is continuously engaged. They take 3 to 4 hours to recharge, and a 30-minute quick charge can provide an additional 6 hours of use.
Vivia
4.6EXCELLENT
Vivia microRIE offer all-day battery life up to 30 hours, with 24 hours being more typical. The portable charger is also robust and will recharge Vivia in 3 hours.
Bluetooth
Audéo Infinio Ultra
5.0EXCELLENT
Phonak Infinio Ultra are compatible with both iOS and Android, offering wireless audio streaming and hands-free calls. Pairing is now easier directly from your phone's Bluetooth menu.
Vivia
5.0EXCELLENT
Vivia are compatible with both iOS and Android, offering wireless audio streaming and hands-free calls. They are also Bluetooth Auracast enabled.
App Features
Audéo Infinio Ultra
5.0EXCELLENT
I found the MyPhonak Hearing Aid app easy to use with many useful features, including health and fitness tracking.
Vivia
4.5EXCELLENT
I found Resound's Smart3D app easy to use with many useful features, including "Check My Fit" which helps with correct insertion. The app unfortunately lacks health and fitness tracking.
Comfort
Audéo Infinio Ultra
5.0EXCELLENT
Phonak Audéo Sphere Infinio Ultra were extremely comfortable and lightweight in my ears. In general, hearing care providers can make numerous physical changes to prescription hearing aids to improve comfort.
Vivia
5.0EXCELLENT
Vivia microRIE were extremely comfortable and lightweight in my ears. In general, hearing care providers can make numerous physical changes to prescription hearing aids like Real to improve comfort.
Design
Audéo Infinio Ultra
4.1AVERAGE
Phonak's new Audéo Sphere Infinio Ultra model shares the same notably larger size as the original Phonak Infinio Sphere. This is needed for its increased AI processing. While the larger size may be more noticeable, Sphere Ultra remains comfortable, and your provider should have no trouble adjusting the fit to your preference.
Vivia
5.0EXCELLENT
Vivia are sleek, smaller than ever, and modern looking prescription hearing aids. They also allow you to customize the look of your hearing aids with an array of color options.
Value
Audéo Infinio Ultra
3.6BELOW AVERAGE
Phonak Sphere Infinio Ultra has a value score of 3.5/5 based on lab performance and public display price.
Vivia
3.2BELOW AVERAGE
Resound Vivia 9 60S microRIE has a value score of 3.1/5 based on lab performance and public display price.
Handling
Audéo Infinio Ultra
4.8EXCELLENT
Infinio Ultra are easy to use and adjust using either the large multi-function button or MyPhonak app. I had no issues making adjustments with either.
Vivia
4.5EXCELLENT
Vivia are easy to use and adjust using either the large multi-function button or Smart3D app. I had no issues making adjustments with either.
Pro Support
Audéo Infinio Ultra
5.0EXCELLENT
Prescription hearing aids like Infinio Sphere Ultra are fit by hearing care providers so you should receive quality care. The MyPhonak app also opens the possibility for remote programming and virtual follow-up appointments.
Vivia
5.0EXCELLENT
Prescription hearing aids like Vivia are fit by hearing care providers so you should receive quality care. The Smart3D app also opens the possibility for remote programming and virtual follow-up appointments.
Lab Recordings
Listen to direct output recordings from our acoustic test lab.
Audéo Infinio Ultra
Vivia
Busy Cafe
Hear this scene unaided, for comparison
Audéo Infinio Ultra
Vivia
Quiet Office
Hear this scene unaided, for comparison
Audéo Infinio Ultra
Vivia
Streaming Music
Hear this scene unaided, for comparison
Audéo Infinio Ultra
Vivia
HearingTracker partners with HearAdvisor to provide recordings and performance data from an acoustic laboratory that follows standard scientific procedures. All hearing aids are fitted and performance-tested for mild sloping to moderate hearing loss. All audio samples cutoff above 10kHz.
Accessories
Compatible accessories for each hearing aid
Audéo Infinio Ultra
Vivia
Accessory Connectivity
RogerDirect™
As a break-through in hearing technology, Marvel hearing aids feature RogerDirect™ which allows the Roger technology to stream directly to Marvel hearing aids without having to attach an external receiver. This major innovation makes Roger technology easier to use and more attractive for a broader group ranging from mild to profound hearing loss. Roger technology makes use of intelligent and adaptive algorithms that continuously measure and precisely analyze noise levels to keep the Roger signal clearly audible above the background noise.
None
Battery Charger
ChargerGo RIC Sphere Infinio+1
Charger with integrated battery
Premium Charger
Charges device when connected to power outlet, and also holds up to three full charges due to its onboard battery.
Standard Charger
Charges device when connected to power outlet.
Desktop Charger
A desktop charger for ReSound hearing aids. Does not charge on the go.
Remote Adjustments
myPhonak App+2
The myPhonak app allows you to access remote support, information about their hearing aids, and a hearing diary. The app also allows you to adjust the volume and pitch of your hearing aids, and change program settings.
None
Remote Control
RemoteControl
The Phonak RemoteControl provides a discreet way to control your Phonak hearing aids.
Unite Remote Control 2
Gives you push-button control of volume and program settings on your hearing aids and lets you manage streaming accessories.
Unite Phone Clip++2
Small enough to clip onto your shirt collar, it streams phone calls and audio to your hearing aids from any Bluetooth-enabled mobile phone or smartphone.
Remote Microphone
Roger Table Mic II+1
Phonak Roger Table Mic II is a microphone dedicated for working adults who participate in various meetings. It selects the person who’s talking and switches automatically between the meeting participants.
PartnerMic™
Discreet remote microphone that helps to boost your partners voice in one-to-one conversations in noise.
Micro Mic
A matchbook-sized remote wireless microphone that lets you hear from a distance up to 80 feet away.
Multi Mic++3
The Multi-Mic+ is a versatile wireless accessory designed to help hearing aid users hear more clearly in challenging situations. It can be clipped onto clothing or worn on a lanyard to pick up a speaker’s voice and stream it directly to compatible hearing aids, or it can be placed on a table to capture group conversations in “table mode.” In addition to acting as a remote microphone, the Multi-Mic+ connects to other audio sources through a built-in telecoil, FM receiver (optional), or a standard 3.5 mm line-in cable, allowing users to stream sound from loop systems, FM transmitters, computers, TVs, or other devices. With a streaming range of up to 25 meters (82 feet), automatic mode switching, volume controls, and app integration, it provides flexible, high-quality sound input across a wide variety of listening environments
Smartphone App
None
ReSound Smart 3D app+2
Adjusts sound, volume and balance settings, tinnitus settings, and allows your provider to make remote adjustments to your hearing aid programs.
TV Streamer
Roger Select™+4
Phonak Roger Select is a microphone specifically designed to help boost your hearing performance and keep you at the heart of the conversation.
TV Connector
The Phonak TV Connector is a wireless accessory that streams audio directly from your TV or stereo system to your Phonak hearing aids, transforming them into wireless stereo headsets. Enjoy high-quality sound, independent volume control, and a long transmission range of up to 15 meters.
Roger On+1
Phonak Roger On is an advanced remote mic accessory developed by Phonak. It is designed to improve speech understanding in noisy environments, over distance, and when many people are speaking simultaneously. Equipped with MultiBeam 2.0 Technology, it provides a boost in understanding by capturing voices from all directions. The Roger On can connect to a variety of multimedia devices and is fully compatible with almost all hearing aids and cochlear implants that have a T-coil or a Roger receiver.
Unite TV Streamer 2
Streams stereo sound from the television directly to your hearing aids from up to 22 feet away.
ReSound TV Streamer+
The ReSound TV-Streamer+, which supports Bluetooth Auracast, streams high-quality sound with speech clarity directly to your hearing aids at the volume you prefer.
Hardware
Audéo Infinio Ultra
Vivia
Accelerometer
Yes
No
Bluetooth® Audio
- Bluetooth® (A2DP)
- Bluetooth® Low Energy (LE)
- Auracast™ Ready
- Made for iPhone (MFi)
- Android (ASHA)
- Bluetooth® Low Energy (LE)
- Bluetooth® Auracast™
Hands-Free Calling
- Bluetooth® (HFP)
- Bluetooth® Low Energy (LE)
- Made for iPhone (MFi)
- Accessory required (Android)
IP Rating
IP68
IP68
Mic + Speaker In Ear
No
Yes
Push Button
- Program control
- Volume Control
- Audio Stream Mix
- Program control
- Volume Control
Rechargeable Batteries
Lithium-ion
Lithium-ion
Tap Controls
- Voice assistant
- Accept/end calls
- Pause/Resume
- Tinnitus program
- Accept/end calls
Voice Assistant
- Siri
No
Volume Rocker
Yes
No
Software Features
Audéo Infinio Ultra
Vivia
Adjustment Bands
20
14
Adjustment Synchronization
QuickSync
No
Audio Stream Mixer
Environmental Balance
No
Directionality
StereoZoom 2.0UltraZoomPremium
All Access DirectionalityBinaural beamformingFront FocusSynchronized SoftSwitching™
Ear Simulation
Real Ear Sound
No
Environmental Adaptation
AutoSense OS: 6.0
Environmental Optimizer
Expansion
No
3 settings
Feedback Suppression
WhistleBlock
DFS Ultra III
Frequency Lowering
SoundRecover2
Sound Shaper
Listening Programs
4
Fully flexible programs: 4
New User Adaptation
auto Acclimatization
Synchronized Acceptance Manager
Noise Reduction
NoiseBlock
NoiseTracker™ II: 4 settings
Occlusion Reduction
AOV
No
Phone in Stereo
DuoPhone
No
Preference Adaptation
User Preference Tuning
No
Spatial Noise Cancellation
Dynamic Noise Cancellation
No
Sudden Loud Noise Reduction
SoundRelax
Impulse Noise Reduction: 3 settings
Tinnitus Relief
Tinnitus Balance
Tinnitus Sound Generator
Unique Amplification Strategy
Motion Sensor HearingSpeech Enhancer
No
Wind Noise Reduction
WindBlock
Wind Guard: 3 settings
Bottom Line
AI summarizedThe Verdict
If following conversation in restaurants, parties, or meetings is your main frustration, the Infinio Ultra's 4.4/5 tuned speech-in-noise score — nearly four times Vivia's 1.3/5 in the same lab condition — justifies its roughly $800 premium.
It's also the device with more adjustment bands, giving your audiologist finer control if your hearing loss needs precise tuning.
Which is right for you?
If your listening challenges are milder or you spend more time in quiet or moderate settings, Vivia's smaller size, lower price, and solid speech-in-quiet performance (4.0/5) make it a reasonable pick — but don't expect its AI noise reduction to close the gap with Infinio Ultra in genuinely loud rooms.
What to ask at your fitting
AI summarizedAsk about real-ear measurement
Both devices' lab scores jumped substantially after professional tuning (Infinio Ultra from 3.27 to 4.13, Vivia from 3.9 to 4.1), so confirm your provider performs REM rather than relying on first-fit defaults.
Demo Sphere mode in a noisy setting
If considering Infinio Ultra, ask your provider to demonstrate the Spheric Speech in Loud Noise mode specifically, since that's where its 4.4/5 speech-in-noise score comes from.
Try on both shells for size
Infinio Ultra's dual-chip design is noticeably larger than Vivia's microRIE shell, so if discretion or fit with glasses matters, physically compare them before committing.