SONNET 2 EAS Audio Processor
Don’t fit your life around an audio processor—choose a processor that fits your life! SONNET 2 EAS is the audio processor made for you. Choose how you’d like it to look. Choose how you’d like to connect to your phone and other devices. And choose to experience your best hearing, wherever you are.
Easy Listening
SONNET 2 EAS is built to give you your best hearing possible. Using a combination of both cochlear implant and hearing aid technology, SONNET 2 EAS makes the most of your unique natural hearing, so you can hear things as they were meant to sound. What’s more, with ASM 3.0 technology and FineHearing sound coding, SONNET 2 EAS makes sure you hear your best wherever you are.
Adaptive Intelligence
SONNET 2 EAS 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 EAS minimises unnecessary noise, so you can have the confidence to chat in any environment.
FineHearing
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.
Simple Streaming
Use the phone you like, and connect it to the audio processor you love. SONNET 2 EAS 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.
On the Phone
Listening to Music
Watching TV
Public Venues
At Work or School
Public Venues
Telecoil is the tried and trusted way to hear more clearly when you’re out and about. Connect SONNET 2 EAS to telecoil loops in theatres, banks, taxis, and many other places.
At Work or School
AudioLink’s remote microphone feature is ideal for hearing someone from a few metres away, whether that’s a teacher, a coworker, or just your family at dinner!
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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.
Be in Control
Gone are the days of carrying around a remote control. With the new AudioKey 3 app, you can change settings on your SONNET 2 EAS directly from your phone. Volume, mic sensitivity, program selection—all at the press of a button.
What’s more, AudioKey 3 also lets you see your individual hearing stats, such as how long you wear your SONNET 2 EAS 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.
Complete Your Look
Choose the colours that suit you. SONNET 2 EAS offers thousands of colour combinations, so you can easily personalise it to match your style. And if you really want to show off your audio processor, there are plenty of funky Design Covers that do just that!
Visit the SONNET Series Colour Configurator, and start designing your personal SONNET 2 EAS.
Make a Splash
Whether relaxing on the beach, or diving into the pool—enjoy great hearing in the water with WaterWear. These reusable covers make SONNET 2 EAS completely waterproof, so you can enjoy all the sounds of the sea without the hassle.
And for everyday, SONNET 2 EAS’s superior water-resistant design protects it from rain, splashes, and sweat. That means you can go for a run in the rain, and not think twice about your audio processor!
For Kids
Compact, durable, and with a range of in-built safety features—SONNET 2 EAS is the ideal choice for your child. Find out how SONNET 2 EAS can help your child to hear their best.
Tamperproof Design
Audio Processor Check
ActiveWear
Fixation Options
Small Size
AudioKey 3 App
Tamperproof Design
SONNET 2 EAS is tough enough for even the most curious toddlers. Both the audio processor and the coil are fully lockable, keeping them safely in one piece, and are optimally sized so they can't be swallowed by children.
Audio Processor Check
Check your child's audio processors are working correctly. The link-check function lets you see at a glance if your child's SONNET 2 is attached to the coil correctly. And you can check if their microphones are working properly using the FineTuner Echo Remote Control.
ActiveWear
With SONNET ActiveWear, you can attach the battery pack of your child's audio processor to their clothing, making their audio processor lighter and more comfortable to wear.
Fixation Options
Keeping audio processors on your child can be a challenge! With a wide range of convenient fixation options, your child can wear SONNET 2 EAS all day long.
Small Size
Choose the Micro Rechargeable Battery for your child’s SONNET 2 EAS, and give them one of the smallest and lightest audio processors available.
AudioKey 3 App
The AudioKey 3 app contains a special “Guardian Role” feature, so you can control your child’s audio processors from your phone. In addition, you can check their hearing stats and make sure they are getting the most from SONNET 2 EAS.
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.
Disposable Batteries 
Rechargeable Batteries
Disposable Batteries
Use two disposable zinc-air batteries with your SONNET 2 EAS for maximum battery life.
- Up to 60 hours of power from two size 675 zinc-air batteries.
- Up to 10 hours of waterproof hearing with WaterWear and two silver-oxide batteries.
Rechargeable Batteries
SONNET 2 EAS’s handy rechargeable batteries can be worn during the day, and then charged overnight. They come in three different sizes: Max, Standard, and Micro.
- Up to 17 hours of power with the Rechargeable Battery Max.
- Up to 10 hours of power with the Rechargeable Battery Standard.
- Up to 7 hours of power with the Rechargeable Battery Micro.
SYNCHRONY 2 for EAS
Great sound quality is only possible with a great implant. With SYNCHRONY 2 you can benefit from the latest EAS 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.
Discover More
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 your local MED-EL office or partner will provide you with more information.
Technical Data
You can check which version of SONNET 2 EAS you have here. For full details on its features, please see the technical data.
SONNET 2 EAS Me1520 Audio Processor
Dimensions and Weight
- 6.1 g (with ActiveWear)
- 11.0 g (Me1520 with two 675 zinc-air batteries)
- DL-Coil: 4.6 g, 32.8 mm x 5.8 mm
- DL-Coil: 6 magnets available in 10 strengths
- Durable coil cables available in 3 lengths:
- 6.5 cm (2.6 in)
- 9 cm (3.5 in)
- 28 cm (11.0 in)
Material
- Processor & Coil: Mixture of polycarbonate and
acrylonitrile-butadiene-styrol polymer - Earhook: Polyamide (PA)
- Cable: PVC and TPE Evoprene
- Biocompatible according to ISO 10993-1
- Latex-free*
Compatibility
- Compatible with all MED-EL multichannel cochlear implants
- MAX Programming Interface
- MAESTRO System Software 8.0 or later
- Compatible with hearing aids of all brands and types
- Exact bimodal synchronisation with any hearing aid: Signal can be delayed up to 10 ms with the latest MAESTRO Software
- Compatible with the HearCare MED-EL app
Product Features
- Frequency Range 70–9300 Hz
- Water-resistant according to IP54 standard
- Dual microphones
- Extended Datalogging
- Automatic Sound Management 3.0
- Tamperproof design
- Secured earhook
- Locking battery pack
- Choking hazard avoidance
- Additional fixation options
- Locking coil cable (locked to coil and control unit)
- Link-check function with LED indicator
- Four program positions
- Continuous volume and sensitivity control with FineTuner Echo or AudioKey 2
- Supports Electric-Acoustic Stimulation (EAS)
Sound Processing Features
Front-End Processing
- Microphone Directionality (Omni, Natural, Adaptive)
- Automatic Volume Control with Dual-Loop AGC
- Wind Noise Reduction
- Ambient Noise Reduction
- Transient Noise Reduction
- Input Dynamic Range (IDR) of 78 dB (28–106 dB SPL)
Sound Coding Strategies
- FS4 (Fine Structure Processing up to 1 kHz on 4 apical channels)
- FS4-p (Fine Structure Processing up to 1 kHz on 4 apical channels with Intelligent parallel Stimulation for even higher temporal accuracy)
- FSP (Fine Structure Processing typically up to 350 Hz on 2 apical channels)
- HD-CIS (High Definition CIS)
- Biphasic or Triphasic stimulation pulses
- Supports 250 spectral bands
Connectivity
Technology
- 2.4 GHz wireless communication
- Direct wireless audio streaming via Bluetooth Low Energy with AudioStream
- True stereo sound quality
- Support for bilateral usage
- Integrated telecoil
- Bimodal streaming possible with several brands of hearing aids
Accessories
AudioLink
- Dimensions: 68 x 38 x 17.5 mm
- Weight: 35 g
- Remote microphone
- Hands-free phone calls
- TV streaming
- Music streaming
- Direct audio input (DAI)
AudioKey 2 App
- Remote control functionality
- Guardian Roles
- Extended Datalogging
- Find My Processor
- Send Feedback
FineTuner Echo
- Dimensions: 104 x 38 x 11 mm
- Weight: 32 g (including battery)
- Compact remote control with bi-directional communication
- ePaper Display
- Test audio processor microphones
- SONNET 2 battery status
WaterWear Cover
- Waterproof up to 4 m depth
- Can be used in salt, fresh and chlorinated water
Battery Options
Zinc-Air Batteries
- Up to 60 hours of use with a set of 2 disposable zinc-air 675 batteries
Rechargeable Battery Max
- Dimension: 32 x 14 x 7 mm
- Processor weight with battery: 10.4 g
- Usage time: Up to 17 hours
- Charging duration: ~6 hours
- Charging/discharging: >1800 cycles (80% capacity)**
Rechargeable Battery Standard
- Dimension: 22 x 14 x 7 mm
- Processor weight with battery: 9.1 g
- Usage time: Up to 10 hours
- Charging duration: ~4 hours
- Charging/discharging: >1100 cycles (80% capacity)**
Rechargeable Battery Micro
- Dimension: 16 x 14 x 7 mm
- Processor weight with battery: 8.1 g
- Usage time: Up to 7 hours
- Charging duration: ~3 hours
- Charging/discharging: >1100 cycles (80% capacity)**
Charging Unit
- 4 simultaneous charging slots
- Power & charging indicator lights
- USB powered: 5V DC, 500mA
- USB power adapter: 100–240V AC (~50/60 Hz)
The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by MED-EL is under license.
Please find detailed information and specific conditions for use for each product in the respective instructions for use.
All functions and features may not be available in all markets. Enabling features on the hardware may be subject to technical considerations.
* Whereby “free” means “not made with latex” according to current FDA guidance: “Recommendations for Labeling Medical Products to Inform Users that the Product or Product Container is not Made with Natural Rubber Latex”,
2014.
** Charging Cycles dependent on individual usage.
SONNET 2 EAS Me1522 Audio Processor
Weight and Dimensions
- 6.1 g (with ActiveWear)
- 10.6 g (Me1522 with two 675 zinc-air batteries)
- DL-Coil: 4.6 g, 32.8 mm x 5.8 mm
- DL-Coil: 5 magnets available in 9 strengths
- Durable coil cables available in 3 lengths:
- 6.5 cm (2.6 in)
- 9 cm (3.5 in)
- 28 cm (11.0 in)
Material
- Processor & Coil: Mixture of polycarbonate and
acrylonitrile-butadiene-styrol polymer - Earhook: Polyamide (PA)
- Cable: PVC and TPE Evoprene
- Biocompatible according to ISO 10993-1
- Latex-free*
Compatibility
- Compatible with all MED-EL multichannel cochlear implants
- MAX Programming Interface
- MAESTRO System Software 6.0 or later
- Compatible with hearing aids of all brands and types
Product Features
- Frequency Range 70–8500 Hz
- Splash-proof design with IP54 rating
- Dual microphones
- Datalogging
- Tamperproof design
- Secured earhook
- Locking battery pack
- Choking hazard avoidance
- Additional fixation options
- Locking coil cable (locked to coil and control unit)
- Link monitoring function with LED indicator
- Four program positions
- Continuous volume and sensitivity control with FineTuner or AudioKey 2 app
- Supports Electric-Acoustic Stimulation (EAS)
Sound Processing Features
Front-End Processing
- Automatic Sound Management 2.0 (ASM 2.0)
- Microphone directionality
- Wind Noise Reduction
- Automatic Volume Control with Dual-Loop AGC
- Input Dynamic Range (IDR) of 78 dB
Sound Coding Strategies
- FS4 (Fine Structure Processing up to 1 kHz on 4 apical channels)
- FS4-p (Fine Structure Processing up to 1 kHz on 4 apical channels with Intelligent parallel Stimulation for even higher temporal accuracy)
- FSP (Fine Structure Processing typically up to 350 Hz on 2 apical channels)
- HD-CIS (High Definition CIS)
- Biphasic or Triphasic stimulation pulses
- Supports 250 spectral bands
Connectivity
Technology
- 2.4 GHz wireless communication
- Direct wireless audio streaming via Bluetooth Low Energy with AudioStream
- True stereo sound quality
- Support for bilateral usage
- Integrated telecoil
Accessories
AudioLink
- Dimensions: 68 x 38 x 17.5 mm
- Weight: 35 g
- Remote microphone
- Hands-free phone calls
- TV streaming
- Music streaming
- Direct audio input (DAI)
AudioKey 2 App
- Remote control functionality
- Guardian roles
- Find My Processor
- Send feedback
- Compatible via AudioLink
FineTuner Echo
- Dimensions: 104 x 38 x 11 mm
- Weight: 32 g (including battery)
- Compact remote control with bi-directional communication
- ePaper Display
- Test audio processor microphones
- SONNET battery status
WaterWear Cover
- Waterproof up to 4 m depth
- Can be used in salt, fresh and chlorinated water
Battery Options
Zinc-Air Batteries
- Up to 60 hours of use with a set of 2 disposable zinc-air 675 batteries
Rechargeable Battery Max
- Dimensions: 32 x 14 x 7 mm
- Processor weight with battery: 10.4 g
- Usage time: Up to 17 hours
- Charging duration: ~6 hours
- Charging/discharging: >1800 cycles (80% capacity)**
Rechargeable Battery Standard
- Dimensions: 22 x 14 x 7 mm
- Processor weight with battery: 9.1 g
- Usage time: Up to 10 hours
- Charging duration: ~4 hours
- Charging/discharging: >1100 cycles (80% capacity)**
Rechargeable Battery Micro
- Dimensions: 16 x 14 x 7 mm
- Processor weight with battery: 8.1 g
- Usage time: Up to 7 hours
- Charging duration: ~3 hours
- Charging/discharging: >1100 cycles (80% capacity)**
Charging Unit
- 4 simultaneous charging slots
- Power & charging indicator lights
- USB powered: 5V DC, 500mA
- USB power adapter: 100–240V AC (~50/60 Hz)
The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by MED-EL is under license.
Please find detailed information and specific conditions for use for each product in the respective instructions for use.
All functions and features may not be available in all markets. Enabling features on the hardware may be subject to technical considerations.
* Whereby “free” means “not made with latex” according to current FDA guidance: “Recommendations for Labeling Medical Products to Inform Users that the Product or Product Container is not Made with Natural Rubber Latex”,
2014.
** Charging Cycles dependent on individual usage.
AudioStream
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.
The Android devices stated in the below list include devices specifically tested and confirmed by MED-EL to be compatible with AudioStream. In addition, other Android devices with Android 10 or later and both Bluetooth® Low Energy (BLE) and Audio Streaming for Hearing Aids (ASHA) technology enabled by the phone manufacturer and service carrier may also be compatible with AudioStream.
Devices Compatible With AudioStream
Apple Devices
Check to see if your Apple device is compatible with unidirectional streaming.
Android Devices
Check to see if your Google Pixel device is compatible with direct streaming.
Check to see if your Samsung Galaxy device is compatible with direct streaming.
Check to see if your Xiaomi device is compatible with direct streaming.
OnePlus 9 Pro, OnePlus 9
Oppo Find X5, Oppo Find X3 Pro
Smart TVs and Digital Media Players
Amazon Fire TV Cube (3rd Gen), Amazon Fire TV Cube (2nd Gen)
[Compatibility with two AudioStreams that are set up bilaterally is under investigation.]
Certain third-party applications (for example, the Roku App for Roku and Roku TV) can be used with compatible devices to stream audio directly to AudioStream.
Devices Suitable for Bimodal Streaming (CI + Hearing Aid) With Android
For bimodal streaming, you simply need an Android smartphone with the Android 12 operating system or later and a hearing aid compatible with Audio Streaming for Hearing Aids (ASHA) technology. The Android Devices list above and the Hearing Aids list below show devices suitable for bimodal streaming. Other Android devices and hearing aids with the necessary technologies may also be suitable for bimodal streaming.
Hearing Aids
Oticon More, Oticon Real, Oticon Intent
ReSound ENZO Q, ReSound LiNX Quattro, ReSound Key, ReSound One, ReSound OMNIA, ReSound Nexia
Signia Pure Charge&Go AX, Signia Pure Charge&Go IX, Signia Pure Charge&Go T IX
Starkey Livio AI, Starkey Evolv AI, Starkey Genesis AI, Starkey Edge AI, Starkey Omega AI
Widex Moment
Devices Suitable for Bimodal Streaming (CI + Hearing Aid) With Apple
For bimodal streaming with Apple, you simply need an Apple device with iOS 16 or higher and a compatible Starkey hearing aid. The lists below include devices specifically tested and confirmed by MED-EL to be suitable for bimodal streaming.
Hearing Aids
Starkey Omega AI series
Starkey Edge AI series
Starkey Genesis AI series
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.
