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 recognizes what kind of environment you’re in and automatically adjusts settings to match. Best of all, you won’t even realize it’s happening.
Noise Reduction
From background noise in a café to an unexpected dog bark, SONNET 2 EAS minimizes unnecessary noise, and 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 favorite 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 favorite music and enjoy phone calls with your loved ones in high-quality, true stereo. Just slide the AudioStream cover over 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
AudioLink
With AudioLink, all you need is a phone with Bluetooth technology to send calls straight to your audio processor.
AudioStream
Slide the AudioStream cover onto your audio processor to stream phone calls directly from your Android or iPhone.
AudioLink
Download the Audio2Ear app and stream music wirelessly to your audio processor via the AudioLink connectivity device.
AudioStream
Slide AudioStream onto your audio processor to wirelessly stream your favorite songs from your smartphone or tablet.
Watching TV
Hear the TV from across the room. Use the AudioLink docking station to stream sound from your TV straight to your ears.
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 theaters, banks, taxis, and many other places.
At Work or School
AudioLink’s remote microphone feature is ideal for hearing someone from a few meters away, whether that’s a teacher, a co-worker, or just your family at dinner!
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 EAS 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 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.
AudioKey is available in areas where AudioKey 2 is not. Please contact your local MED-EL representative for more information.
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Complete Your Look
Choose the colours that suit you. SONNET 2 EAS offers thousands of colour combinations, so you can easily personalize 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 
Wearing Options
Fixation Options 
Small Size 
AudioKey 2 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.
Wearing Options
SONNET 2 EAS’s wearing options make it lighter to wear for little ears. BabyWear and ActiveWear allow you to attach some or all of the audio processor to your child’s clothes, so that they can enjoy comfortable hearing all day long.
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 2 App
The AudioKey 2 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 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.
Discover More
Technical Data
SONNET 2 EAS
Audio Processor
(Me1520)
Weight and Dimensions
- 6.1 g (with ActiveWear)
- 11 g (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 8.0 or later
- Compatible with hearing aids of all brands and types
- Exact bimodal synchronization with any hearing aid: Signal can be delayed up to 10 ms with the latest MAESTRO Software
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 coil 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)
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 functionality
- Extended Datalogging
- Find My Processor
- Send Feedback
FineTuner Echo
- Dimension: 104 x 38 x 11 mm
- Weight: 32g (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 metres 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
SONNET Rechargeable Battery
- Dimension: 22 x 14 x 7 mm
- Processor Weight with Battery: 9.1 g
- Usage time: Up to 10 hours
- Charging duration: ~4 hours
- Lifetime: >500 charging/discharging cycles
SONNET 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
- Lifetime: >500 charging/discharging cycles
SONNET Charging Unit
- 4 simultaneous charging slots
- Power & charging indicator lights
- USB powered: 5V DC, 500mA
- USB power adapter: 100–240V AC (~50/60 Hz)
SONNET 2 Mini Battery Pack
- Dimensions: 66 x 29 x 14 mm
- Weight (without battery): <13g
- Usage time:
Up to 37 hours with 1 AAA battery or
up to 16 hours with Rechargeable DaCapo Powerpack
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