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Spheric Speech Clarity used to start at the 70 level. With the Audéo EON Sphere 50, Phonak brings it down to the standard tier, at moderate strength. You activate it manually here, step down to 16 fine-tuning channels, and lose StereoZoom 2.0 and Dynamic Noise Cancellation. For quieter rooms and one-on-one conversation, that trade often beats paying for the 70. Phonak states up to 38 hours of battery life for the EON Sphere line.

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Your hearing expert will use your results to confirm the Phonak Audéo EON E50 Sphere is the right match or recommend a better fit. Zero pressure, zero cost.

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Your Phonak Audéo EON E50 Sphere arrives in days, programmed to your exact prescription.
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Frequently Asked Questions

What's the real-world battery life?

The Phonak Audéo EON E50 Sphere delivers 38hours, assuming 3 hours of daily Bluetooth streaming. This typically means 2+ full days of use before recharging.

What is the 60 Day Risk-free Trial?

A hearing aid doesn't prove itself in a quiet room on a Tuesday afternoon. It proves itself at the family dinner where everyone talks at once. The restaurant with the acoustics that defeat every table in the place. The phone calls you've been avoiding for two years. The TV that's been creeping up in volume so gradually you didn't notice until someone pointed it out.

That's why our trial is 60 days, not a long weekend. You deserve to know these are right, not just right enough to keep because returning them felt complicated. So we made returning them not complicated.

Every purchase includes professional fitting by a licensed hearing care provider, unlimited adjustments throughout your trial, and devices that arrive calibrated for your specific audiogram. The trial isn't a safety net bolted onto the product. It's the whole philosophy.

Compare Sphere Levels

Three Spheres. One new platform.

Every EON Sphere runs the HYPERSONIC AI chip and Phonak's newest platform — the levels differ in how much they do for you automatically. Hover any highlighted cell to see why it matters.

What's inside	Most Popular Brand New EON Sphere 90 Premium level	Brand New EON Sphere 70 Advanced level	Brand New EON Sphere 50 Standard level	Infinio Ultra Sphere I90 Prior generation (2025)
Spheric Speech Clarity 3.0 AI speech-from-noise separation in loud places	Automatic · full strengthUpgraded	Automatic · high strength	Manual · moderate strength	2.0 — prior version
HYPERSONIC™ AI chip A second processor dedicated to cleaning up speech	✓New chip	✓	✓	DEEPSONIC™
AutoSense OS™ AI Auto-adjusts as your surroundings change	8.0Upgraded	8.0	8.0	7.0
Speech Enhancer Boosts soft and distant voices in quiet	✓	—	—	✓
Dynamic Noise Cancellation Extra quieting you control in the app	✓	✓	—	✓
SpeechSensor Catches voices from the sides and behind you	✓	✓	—	✓
Fine-tuning channels Resolution for matching your prescription	20	20	16	20
WindBlock Comfort outdoors and in the car	2.095% approved	2.0	2.0	1.0
Auracast™ broadcast audio Tune into broadcast TVs, theaters, and airports	✓First for Phonak	✓	✓	—
25% smaller · 20% lighter The smallest Sphere Phonak has ever made	✓	✓	✓	—

Physical

Chipset HYPERSONIC™ + ERA (dual chip)

Style Receiver-in-Canal (RIC)

Hearing aid material Silicone, Plastic

Tap Control ✓

Power & Durability

Battery Life (hours) 38hrs

Battery Range (Normal Use) 36-48hrs

Ingress protection (IP) rating IP68

Features

Hearing aid features Water resistant / IP rated, Wind noise reduction, Noise Reduction, Tinnitus Relief, Feedback suppression, Directional microphone, Programmable, Rechargeable battery, Digital

Fine-Tuning Channels 16

Directional Microphones Yes (Automatic + Manual)

Loss & Damage 3 years $495

Speech Enhancer –

Tinnitus Support ✓

Telecoil –

Health Tracking –

Performance

Wind Noise Reduction ✓

Speech-in-Noise Enhancement ✓

Hearing Loss Range Mild, Moderate, Profound, Severe

Feedback / Whistle Cancellation ✓

Performance Tier Standard

Directionality 360°

General

Technology level Intermediate

Hearing Test Required –

Generation Current Gen

Connectivity

Audio Streaming Yes (Universal)

Hands-Free Calls ✓

Simultaneous Connections 8

User Adjustable via Mobile App ✓

Auracast Ready ✓

Android Compatible ✓

iOS Compatible ✓

Connectivity Technology Roger Direct, Bluetooth, Auracast

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Phonak Audéo EON E50 Sphere