Phonak SmartSpeech™ Technology is a collection of features that AutoSense OS™ 5.0 seamlessly adapts, each feature proven to provide either improved speech understanding or reduced listening effort in many listening environments.1,2
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Phonak CROS Lumity
- Unaidable hearing loss in one ear
- Fully rechargeable
- Advanced features
Imagine a world where you can enjoy conversations no matter where they come from. CROS Lumity does just that. Immerse yourself in the words and live in every moment with a hearing solution designed for those with unaidable hearing loss in one ear.
- Improved speech understanding and environmental awareness
Personalization with the myPhonak app
The Phonak CROS system features universal connectivity with devices such as smartphones, TVs, tablets and laptops

Open up the world
Our CROS solution takes advantage of our innovative Lumity technology to help you experience the world around you. The CROS system increases environmental awareness from the unaidable ear, automatically detecting sounds coming from both sides.
No matter where sound comes from
A Lumity hearing solution for unaidable hearing loss in one ear
A CROS device always needs to be combined with a compatible hearing aid in order to provide a hearing solution. What is obtained is a CROS system that consists of two parts:
- the CROS device, worn on the unaidable ear, picks up sounds and voices and transmits them wirelessly to the hearing aid and
the compatible Phonak rechargeable hearing aid receives the signal from the unaidable ear and play it to your better ear.

Unaidable hearing loss in one ear
CROS L is a solution for you if you have unaidable hearing in one ear and normal hearing or an aidable hearing loss in your better hearing ear. It will transmit the the sounds and voices from the ear you cannot hear in to the ear you can so your hearing ear can pick up sounds from both sides.











Color options

Connects to smartphones and other devices
Lumity hearing aids features universal Bluetooth® connectivity with a wide range of devices, including smartphones, tablets, laptops and more. Thanks to Tap Control you can connect with the world around you with ease. Enjoy effortless hands-free phone conversations.*
* When paired with an Audéo L-R, L-RT, Naída L-PR or Sky L-PR hearing aids

Your hearing, your way
We believe that hearing is personal, which is why Phonak offers myPhonak and myPhonak Junior. Our innovative apps allow you to personalize your hearing experience, letting you take control of your hearing needs.

Roger™ microphones
Roger is an intelligent wireless technology that transmits speech to the CROS system via RogerDirect™ for better hearing over distance and noise.
Resources and downloads
Need product support?
- Troubleshooting
- Maintenance
- Compatibility
Footnotes
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc., and any use of such marks by Sonova AG is under license
IOS is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
Android is a trademark of Google LLC.
1 Appleton, J. (2020) AutoSense OS 4.0- significantly less listening effort and preferred for speech intelligibility. Phonak Field Study News retrieved from www.phonak.com/evidence accessed April 2023.
2 Woodward, J and Latzel, M (2022) New implementation of directional beamforming configurations show improved speech understanding and reduced listening effort. Phonak Field Study News retrieved from www.phonak.com/evidence, accessed April 2023.