SONNET 2 Audio Processor

Don’t fit your life around an audio processor—choose a processor that fits your life! Whatever your lifestyle, SONNET 2 is made for you. Wear it the way you want to. Connect it to the phone you already have. And experience great sound quality, whatever you’re doing.

SONNET 2 - Smart Sound Technology

Easy Listening

SONNET 2 is designed to give you your best hearing possible, wherever you are. Whether in a noisy restaurant, at a music concert, or simply taking a walk on a windy day, SONNET 2 lets you hear your best in any environment.


Adaptive Intelligence

SONNET 2 recognises what kind of environment you’re in and automatically adjusts settings to match. Best of all, you won’t even realise it’s happening.

Noise Reduction

From background noise in a café to an unexpected dog bark, SONNET 2 minimises unnecessary noise, so you can have the confidence to chat in any environment.


Hear the details with FineHearing sound coding technology. FineHearing lets you hear the world as it was meant to sound—from your favourite song to the voice of a loved one.

SONNET 2 - AudioStream

Simple Streaming

Use the phone you like, and connect it to the audio processor you love. SONNET 2 makes it easy to listen to your favourite music, and enjoy phone calls with your loved ones in high-quality, true stereo. Just slide the AudioStream cover onto your audio processor to enjoy direct wireless streaming from your smartphone or tablet.


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HearCare MED-EL App
HearCare MED-EL

HearCare MED-EL App

Convenient Care. Anytime. Anywhere.

With this easy-to-use app, you can perform system checks, create configuration backups that are stored in the MED-EL cloud, and benefit from remote fittings—just download the audio processor configurations your clinician sends you whenever and wherever it’s convenient for you.

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AudioStream - Bimodal Streaming

Made for Bimodal

Use a hearing aid on one of your ears? No problem! SONNET 2 is compatible with every brand and type of hearing aid because our implant systems mimic natural hearing. And if your hearing aid supports audio streaming, you can even stream sound to both your ears at the same time. All you need is AudioStream and a compatible smartphone*.

Bimodal Streaming

SONNET 2. Made For You.

Want to know how SONNET 2 fits your lifestyle?
Take our 5 minute quiz and find out!

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SONNET 2 and AudioKey
AudioKey2 App

Be in Control

Gone are the days of carrying around a remote control. With the new AudioKey 2 app, you can change settings on your SONNET 2 directly from your phone. Volume, mic sensitivity, program selection—all at the press of a button.

What’s more, AudioKey 2 also lets you see your individual hearing stats, such as how long you wear your SONNET 2 each day. And if you unexpectedly lose your processor, the "Find My Processor" function shows where you last used the app with your audio processor, so you can retrace your steps.


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SONNET 2 - Style
SONNET 2 - Style

Match Your Style

Style your SONNET 2 to match your individual look. With thousands of colour combinations to choose from, you really can give your SONNET 2 a unique makeover!

Design Award 2019

Awarded to the SYNCHRONY System, comprising the SONNET 2 Audio Processor and accessories, SYNCHRONY 2 Cochlear Implant, and MAESTRO 8.0 fitting software.

background sonnet2

Anthracite Beige Black Ebony Nordic Grey White

Choose Your Look

Visit the digital showroom to see SONNET 2 up close and choose between the different looks.

Enter Showroom


SONNET 2 - water-resistant
SONNET 2 WaterWear

Splash Around

With SONNET 2, you can get caught in the rain! SONNET 2’s water-resistant design protects it from everyday splashes and moisture. Going for a run in the rain just got a little bit easier.

And for swimming or other water sports, the waterproof WaterWear covers are ideal! Simply slip the cover over your processor and enjoy hours of hearing fun in the pool or at the beach.


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SONNET 2 - For Kids
SONNET 2 - for kids

For Kids

Choosing the right audio processor for your child can be hard. SONNET 2’s compact and durable design makes it the ideal choice for children—from tiny babies right through to big kids.

SONNET 2 - Long-Lasting Power
SONNET 2 - Long-Lasting Power

Long-Lasting Power

SONNET 2’s powerful batteries mean you can go for days at a time. Choose regular zinc-air disposable batteries for the longest wearing time. Alternatively, the rechargeable batteries are a convenient way to keep SONNET 2 powered up throughout the day.


SYNCHRONY 2 Cochlear Implant

Great sound quality is only possible with a great implant. With SYNCHRONY 2 you can benefit from the latest cochlear implant technology and our MRI Guarantee.

But the biggest advantage of SYNCHRONY 2 is that it mimics natural hearing. The result? The closest to natural hearing of any cochlear implant system.

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We’re Here for You on Your Hearing Journey

Would you like to find out more about how MED-EL’s hearing solutions could help you or someone you care for? Simply fill out the contact form, and we’ ll provide you with more information.

Your request and contact details will be forwarded to the closest MED-EL office or certified partner in your country. MED-EL will use the information you provide on this form to be in touch with you and to provide updates and marketing. Please let us know all the ways you would like to hear from us:

We will treat your information with respect. For more information about our privacy practices please visit our privacy policy page. By clicking below, you agree that we may process your information in accordance with these terms.

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Technical Data

Width: 37.4mm
Height: 67.6mm with Battery Pack Cover Max
Height: 56.7mm with Battery Pack Cover Standard
Height: 51.4mm with Battery Pack Cover Micro
SONNET Audio Processor Size
Thickness: 5.9mm
Thickness: 9.3mm

You can check which version of SONNET 2 you have here. For full details on its features, please see the technical data.

Direct Wireless Streaming Cover for SONNET Series Audio Processors

AudioStream can be used as a Made for iPhone (MFi) Hearing Device and supports the Audio Streaming for Hearing Aids (ASHA) technology. MED-EL recommends keeping your device(s) updated with the latest version of the iOS or Android operating system. AudioStream is compatible with iOS version 11 or later and Android version 10 or later.

* Bimodal streaming is only possible with Android 12 or later and hearing aids compatible with Audio Streaming for Hearing Aids (ASHA) technology. For a detailed list of compatible devices, see below

Devices Suitable for Bimodal Streaming

For bimodal streaming, you simply need an Android smartphone with the Android 12 operating system or later, a hearing aid with ASHA (Audio Streaming for Hearing Aid) technology, and an AudioStream. The below lists include devices specifically tested and confirmed by MED-EL to be suitable for bimodal streaming. Other Android devices and hearing aids with the necessary technologies may also be suitable for bimodal streaming when using AudioStream.

Android Devices

Check to see if your Google Pixel device is suitable for Bimodal Streaming.

Samsung Galaxy S23, Samsung Galaxy S22, Samsung Galaxy S21+,  Samsung Galaxy S21, Samsung Galaxy S20 Ultra, Samsung Galaxy Z Fold2, Samsung Galaxy S10e

Xiaomi Mi 11T Pro

OnePlus 9 Pro

Oppo Find X5, Oppo Find X3 Pro

Hearing Aids

Beltone Imagine, Beltone Amaze, Beltone Boost Ultra, Beltone Rely

Oticon More, Oticon Real, Oticon Intent

ReSound ENZO Q, ReSound LiNX Quattro, ReSound Key, ReSound One 

Signia Pure Charge&Go X, Signia Pure Charge&Go AX, Signia Pure Charge&Go IX, Signia Pure Charge&Go T IX

Starkey Livio AI, Starkey Evolve AI

Widex Moment

Although MED-EL aims to provide as many users as possible with seamless device compatibility, MED-EL cannot guarantee full compatibility or troubleshooting support with all devices and the information provided above should only be used for reference.