RONDO 3 Audio Processor

RONDO 3 is incredibly simple. With wireless streaming, wireless charging and superior hearing performance, RONDO 3 gives you simple hearing for all day—every day. It’s simply an incredible audio processor.

Incredibly Simple. Simply Incredible.



RONDO 3 makes hearing simple. Superior and seamless hearing performance — without the need to change settings or batteries. With RONDO 3, connecting with what you love is simple.

  • All day hearing
  • Over 30 cover designs
  • Compatible with all hearing aids

Simple Hearing

Hear your best and have conversations with confidence in any environment—without changing settings.


Conversations with Confidence

Ever have problems understanding in a crowded café? Not with RONDO 3. With two microphones focused on speech, RONDO 3 will give you the confidence to have conversations anywhere.

Adaptive Intelligence

Tired of changing settings? With Automatic Sound Management 3.0 and Adaptive Intelligence technology, RONDO 3 automatically adapts to any sound environment providing for superior hearing performance everywhere you go. Now that’s incredibly simple.

Enhanced Noise Reduction

Whether it’s the breeze, dishes clanking or the steady hum of an engine, noise everywhere can disrupt your understanding of speech. RONDO 3 automatically reduces such background noises so you can hear with comfort.

Compatible with All Hearing Aids

RONDO 3 is compatible with every brand and type of hearing aid because RONDO 3 and MED-EL cochlear implant systems mimic natural hearing.

What's more, RONDO 3 can even be easily adjusted for optimal hearing with any hearing aid—including the hearing aid you’re already wearing on the other ear now. Since you won’t need to buy a new hearing aid on the other side, you’ll save money and the trouble needed to readjust to a new one. Simply incredible!

Simple Handling

No cables, no changing batteries, no hassles. RONDO 3 is light, extremely slim and charges wirelessly. No worries if you forget to charge it overnight. You can still charge it on the go and continue using your RONDO 3 at the same time without any downtime! That will give you peace of mind!


Complete Convenience

Checking RONDO 3’s battery level is incredibly simple—either on your smartphone or by just pressing directly on the processor itself! It couldn’t be any more convenient.

Incredible Comfort

RONDO 3 was created for comfort and is barely visible on the head. It is worn completely off the ear, making RONDO 3 not only perfect for those with glasses but also incredibly comfortable for everyone.

Cut Costs and Waste

With an integrated rechargeable battery, you won’t use disposable batteries ever again. Save yourself time and money—and from the guilt of having to throw away all of those used batteries.

Wireless Charging

Power for All Day

RONDO 3’s integrated rechargeable lithium-ion battery can provide enough power for all day. Just charge it overnight while you sleep, and wake up to a full day of hearing.

Wireless Charging

Simply place it on the center of the inductive charging pad, and RONDO 3 will recharge automatically—no cables needed! Then you’re free to forget about it and get on with your day—or rest assured that RONDO 3 will be ready to go when you need it.

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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Simple Streaming

Connect RONDO 3 with external devices and stream directly and wirelessly. The convenient AudioStream Adapter streams music and speech from compatible smartphones or tablets directly to your RONDO 3. Streaming music, using the phone, watching TV: enjoy music and speech in high-quality true stereo.

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Stay Connected

AudioLink streams sound from external audio sources and provides you with the ability to stream music and talk on the phone hands free. AudioLink’s integrated wireless microphone can be used to understand speech better in loud environments and from further away.

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Stay Connected
AudioKey2 App

All at Your Fingertips

Want to adjust RONDO 3’s settings? You decide between the FineTuner Echo remote control or the AudioKey 2 app on your smartphone. It is also easy and convenient to get detailed battery level percentage information directly from your Android or iPhone via AudioKey 2.

AudioKey 2 does even more. With the Guardian Role, parents can check their child’s hearing and audio processor settings from their smartphone. You can also see which settings you use most and even locate RONDO 3 if you lose it—all without having to carry a remote control.

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Simple Protection

Simple Protection

Increased protection means peace of mind. From accidental spills to a delightful day of diving, RONDO 3 has got you covered.


IP68 Rating

With a rating of IP68, RONDO 3 is water-resistant enough to survive dust, rain, sweat, an accidental spill or splash of water, or even a brief immersion in water* without an accessory. Worries about damaging your processor during your everyday life will be history with RONDO 3!

Make Waves

Do you love swimming or taking an occasional bath? If so, keep RONDO 3 safe and dry with WaterWear. Whether you are diving next to dolphins in salty seawater or cooling off in a chlorinated swimming pool on a hot summer day, these reusable and fully waterproof covers will give you the freedom to hear while enjoying your time in the water.

RONDO 3 - Simple Personalization

Simple Personalization

RONDO 3 can either blend in or stand out—whatever you want to match your mood or show your style.

Stand Out with Style

Stand out from the crowd and show your individual style with RONDO 3. With more than 30 sleek and stylish designs to choose from—from elegant and art-inspired to classic patterns and wild animal prints—RONDO 3 can easily change your entire look in a snap!

Look and Feel Confident

Look and feel good with RONDO 3. RONDO 3 blends in easily with one of 6 base covers or 9 subtle and discreet hair-patterned Design Covers. There are also Simplicity Covers so locating the button is intuitive for new users and caregivers.

background rondo3
Anthracite Black Cool Gray
Ebony Nordic Grey White

Choose Your Look

Visit the digital showroom to see RONDO 3 up close and choose between the different looks.

Enter Showroom

   User Stories

Experiences with RONDO 3

Want to see what life is like with RONDO 3? Watch the video to find out how four users found the audio processor’s hearing performance, connectivity options and ease of use.


SYNCHRONY 2 Cochlear Implant

Great sound quality is only possible with a great implant. With SYNCHRONY 2 you can benefit from excellent implant reliability 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: 35.8mm
Length: 44.9mm
Height: 11.9mm

RONDO 3 Audio Processor

Product Features

  • All-in-one design
  • 14.7 g with Mini Cover and magnet M1
  • 15.9 g with Standard Cover and magnet M1
  • Water-resistant according to IP68 standard: RONDO 3 is resistant to water splashes and submersion (up to a maximum depth of 1 m for 60 minutes).
  • Frequency range 70-9300 Hz
  • Dual microphones
  • Automatic Sound Management 3.0
  • Extended datalogging
  • Battery status indication via LED
  • Link Monitoring function with LED indicator
  • Continuous volume and sensitivity control via FineTuner Echo or AudioKey 2
  • Four program positions
  • Additional fixation options
  • Diametric magnet available in 5 strengths, axial magnet available in 5 strengths
  • Housing: Mixture of polycarbonate and acrylonitrile-butadiene-styrol polymer
  • Biocompatible according to ISO 10993-1
  • Latex-free**

Rechargeable Battery

  • Integrated lithium-ion battery
  • Up to 24 hours of use per charge***
  • Wireless recharging
  • Power supply and simultaneous charging possible via Charging Cable (e.g. connection to power bank)
  • Battery health is more than 80% capacity after 2000 charge/discharge cycles


  • 2.4 GHz wireless communication
  • Direct wireless audio streaming via Bluetooth Low Energy with AudioStream Adapter
  • True stereo sound quality
  • Support for bilateral usage
  • Compatible with AudioLink
  • Bimodal streaming possible with several brands of hearing aids
  • Telecoil adapter
  • Direct connectivity to assistive listening devices via Mini Battery Pack


  • Compatible with all MED-EL multichannel cochlear implants
  • MAX Programming Interface
  • MAESTRO System Software 9.0 or later
  • Bimodal use: compatible with all hearing aids


  • 6 Standard Covers (matte)
  • 5 Simplicity Covers
  • 24 Design Covers
  • 1 Mini Cover (black)

Colour Options

RONDO 3 Design Covers

Sound Processing Features

Front-End Processing

  • Microphone Directionality (Omni, Natural, Adaptive)
  • Adaptive Intelligence
  • Automatic Volume Control with Dual-Loop AGC
  • Wind Noise Reduction
  • Ambient Noise Reduction
  • Transient Noise Reduction
  • 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



  • Dimensions: 68 x 38 x 17.5 mm
  • Weight: 35 g
  • 2.4 GHz wireless communication
  • Remote microphone
  • Hands-free phone calls
  • TV streaming
  • Music streaming (wireless with Audio2Ear App)
  • Direct audio input (DAI)

AudioKey 2 App

  • Remote control
  • Guardian function
  • Datalogging
  • Find My Processor
  • Battery status

FineTuner Echo Remote Control

  • Dimensions: 104 x 38 x 11 mm
  • Weight: 32 g (including battery)
  • Bidirectional communication
  • Display
  • Troubleshooting
  • Battery status

WaterWear cover

  • Waterproof up to 4 m deep for 2 hours (according to IP68 standard)
  • Can be used in salt water, fresh water and chlorinated water

Charging Pad

  • USB port: 5 V DC, 1 A
  • USB power supply: 100–240 V AC (~50/60 Hz)
  • Wireless Qi Charging Protocol

Detailed information and specific usage instructions for each product can be found in its respective user manual. All functions and features may not be available in all markets.

The Charging Pad is not manufactured by MED-EL.

* Immersion in water (up to a maximum depth of 1 m for 60 minutes).
** 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.
*** Battery life dependent on individual usage.

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