SONATA 2 Cochlear Implant

Just like all our cochlear implants, SONATA 2 is designed to bring you the closest to natural hearing. Alongside the latest hearing technology, it’s built with safety and reliability in mind to give you your best hearing now and in the future.



Great Sound Quality

Hear the world as it was meant to sound thanks to SONATA 2’s advanced hearing technology.


Ideal Electrode

Our wide range of electrode arrays means that your surgeon can choose the best fit for your individual cochlea.


Straightforward Surgery

SONATA 2 is designed for simple surgery, helping you to get back on your feet afterwards.


Outstanding MRI Safety*

Experience hassle-free MRIs scans at 3.0 Tesla.


Reliable Design

Enjoy years of great hearing thanks to SONATA 2’s safe and reliable design.


Choosing Your Implant

The most important factor to consider when choosing a cochlear implant system is the implant itself. That’s because it’s the implant rather than the audio processor that has the biggest effect on how well you hear.

Your audio processor can be upgraded every few years, but your implant will be with you for much longer. That’s why you should think about which implant will give you the best hearing, both now and in the future.

Technology That Follows Nature

MED-EL cochlear implants use advanced coding strategies, designed to give you the closest to natural hearing of any CI system. This helps you hear the high and low tones, and the fine details of both everyday conversations and your favorite songs.

What’s more, our cochlear implants are individualized, so that the electrode array fits your individual cochlea. This way, you can make the most of your cochlear implant, and experience the best hearing you possibly can.

Discover Our Technology


Surgery Made Easy

There’s no way around it: Getting a cochlear implant has to involve surgery. But we designed SONATA 2 with feedback from world-leading ENT surgeons so that your cochlear implant surgery can be as simple as possible. An easy surgery means you can get back on your feet quickly and start enjoying the next stage of your hearing journey.



The chances are that you’ll need an MRI at some point in your lifetime. SONATA 2’s self-rotating magnet design means you can undergo high-resolution MRI scans at 3.0 Tesla*, without having extra surgery** to remove the magnet.

For you, this means no additional surgery just to get an MRI scan and no hearing downtime, waiting for a scar to heal. SONATA 2 lets you have hassle-free MRIs without giving your implant a second thought.

More About MRI


Great Protection. Guaranteed.

Because of our long and positive experience with MRIs and cochlear implants, we offer a life-long MRI guarantee. We promise to replace your implant in the very unlikely event that it’s damaged during an MRI scan.

This life-long MRI guarantee for cochlear implants is the first and only to be offered by any company and covers all MED-EL cochlear implants from as far back as 1994. So you can feel confident about any future MRI scans.

Reliability You Can Trust

When you choose a cochlear implant, you’re choosing a solution that will be with you for years to come. That’s why offering you safe and reliable hearing is at the core of our philosophy.

Our implants are engineered and manufactured at our Austrian headquarters, using high-tech materials and state-of-the-art processes. This way we can ensure that every single implant meets the highest standard in quality and reliability.


More About Reliability

MED-EL CI System

Our Audio Processors

Once you've decided on your SONATA 2 cochlear implant, you’re ready to pick your perfect audio processor. SONATA 2 is built to be compatible with all available MED-EL cochlear implant audio processors, so you can choose the right option for your lifestyle.

And because we offer backwards compatibility, you can easily upgrade your processor in the future and enjoy the latest in hearing technology.

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 will provide you with further 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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Width: 24mm
Length: 47.8mm

Cochlear Implant (Mi1260)

Stimulation Features

  • Sequential non-overlapping stimulation on 12 electrode channels
  • Simultaneous (parallel) stimulation on 2 to 12 electrode channels
  • 24 independent current sources
  • Stimulation reference electrode on titanium housing
  • Stimulation rates of up to 50,704 pulses per second
  • Range of pulse phase duration: 2.1–425.0 μs/phase
  • Time resolution (nominal values): 1.67 μs
  • Current range (nominal value): 0–1200 μA per pulse phase

Pulse Shapes

  • Biphasic, symmetric triphasic and triphasic precision pulses

Comprehensive Diagnostic Toolkit

  • Status Telemetry
  • Impedance and Field Telemetry (IFT)
  • Electrophysiology measurements reference electrode on titanium housing
  • Auditory Nerve Response Telemetry (ART™)
  • Electrically Evoked Auditory Brainstem Response (EABR)
  • Electrically Evoked Stapedius Reflex Threshold (ESRT)
  • Electric Acoustic Evoked Potential (EAEP)

Housing Design

  • Impact resistance ≥ 2.5 Joule
  • Raised implant step for additional stability
  • Hermetically sealed titanium housing
  • Recommended flattening depth for the stimulator: 2 mm
  • Stimulator: 18.8 mm x 24 mm x 5.7 mm (typical)
  • Coil: 29.0 mm diameter x 3.3 mm thick (typical)
  • Weight: 8.7 g (typical)

Safety Features

  • Independent safety capacitors for each electrode channel
  • Unique Implant ID (IRIS)
  • Biocompatibility standard according to ISO 10993-1
  • Latex-free***

MRI Conditions*

  • MR Conditional at 0.2, 1.0, 1.5 and 3.0 Tesla
  • No magnet removal required even at 3.0 Tesla

Removable Magnet

  • Magnet removable for minimized image distortion
  • Rotatable magnet within hermetic titanium housing
  • Self-aligning to external magnetic field
  • Conical shape for secure placement

Electrode Arrays

FLEX Series

The softest and most flexible electrode arrays, designed for Structure Preservation and Complete Cochlear Coverage. Featuring 19 active and physical platinum electrode contacts and FLEX-tip technology for atraumatic insertion. All FLEX series electrodes feature a green orientation marker for improved visibility and positioning during insertion.


  • 26.4 mm stimulation range
  • Diameter at basal end: 1.3 mm
  • Dimensions at apical end: 0.5 x 0.4 mm


  • 23.1 mm stimulation range
  • Diameter at basal end: 0.8 mm
  • Dimensions at apical end: 0.5 x 0.4 mm


  • 20.9 mm stimulation range
  • Diameter at basal end: 0.8 mm
  • Dimensions at apical end: 0.5 x 0.3 mm


  • 20.9 mm stimulation range
  • Diameter at basal end: 0.8 mm
  • Dimensions at apical end: 0.5 x 0.3 mm


  • 15.4 mm stimulation range
  • Diameter at basal end: 0.8 mm
  • Dimensions at apical end: 0.5 x 0.3 mm

FORM Series

Designed specifically for malformed cochleae and for instances where leakage of cerebrospinal fluid (CSF) is expected. Featuring 24 active and physical platinum electrode contacts and SEAL technology designed to aid closing of the cochlear opening.


  • 18.7 mm stimulation range
  • Diameter at basal end: 0.8 mm
  • Diameter at apical end: 0.5 mm


  • 14.3 mm stimulation range
  • Diameter at basal end: 0.8 mm
  • Diameter at apical end: 0.5 mm


Features 24 active and physical platinum electrode contacts.


  • 26.4 mm stimulation range
  • Diameter at basal end: 1.3 mm
  • Diameter at apical end: 0.5 mm


  • 20.9 mm stimulation range
  • Diameter at basal end: 0.8 mm
  • Diameter at apical end: 0.5 mm


  • 12.1 mm stimulation range
  • Diameter at basal end: 0.7 mm
  • Diameter at apical end: 0.5 mm

* MED-EL cochlear implants since 1994 are MR conditional. Recipients with a SONATA 2 Cochlear Implant may be safely MRI scanned at 0.2, 1.0, 1.5, and 3.0 Tesla following the conditions detailed in the Medical Procedures Manual.
** Unless required for diagnostic reasons.
*** Whereby “free” means “not made with latex” according to current FDA guidance.