RONDO 3 Audio Processor

Incredibly Simple. Simply Incredible.



Meet RONDO 3. Its easy-to-use design makes connecting with what you love simple.

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

Easy Listening

Hear your best in any environment. Whether you're eating lunch with coworkers in a noisy cafeteria, enjoying a concert, or taking a walk on a windy day—RONDO 3 has you covered.


Adaptive Intelligence

RONDO 3 recognizes what kind of environment you’re in and automatically adjusts your settings to provide optimal hearing. You won’t even know it’s happening. And now that you’ll have two microphones focused on speech, those days of struggling to communicate in a noisy room will be long gone.


RONDO 3’s sound coding technology—FineHearing—lets you hear the world as it was meant to sound, complete with all the little details. Your favorite album has never sounded so good.

Enhanced Noise Reduction

From the clanking of dishes in a crowded restaurant to the next door's lawnmower hum—background noise can disrupt your listening and speech understanding.RONDO 3 minimizes unnecessary background noise, so you can go on hearing comfortably.

Compatible with All Hearing Aids

RONDO 3 is compatible with every hearing aid brand and type. Not only that, but RONDO 3 mimics natural hearing.

This means that you can easily adjust RONDO 3 for optimal hearing with any hearing aid—including the one you’re already wearing on your other ear. 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. If you forget to charge it overnight, don’t worry! Charge RONDO 3 on the go and continue using it at the same time without any downtime!


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 wireless streaming and wireless charging provide for your best possible hearing in any environment—all day long. It’s simply an incredible audio processor.

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.


Simple Streaming

Connect RONDO 3 with external devices and enjoy direct and wireless streaming. The convenient AudioStream Adapter for RONDO 3 streams music and speech from compatible smartphones or tablets directly to your processor. Streaming music, using the phone, watching TV—hear music and speech in high-quality true stereo.

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Stay Connected

Whether you’re enjoying your favorite movie on a tablet or a TV, in a business meeting, or sharing a special moment with a loved one, AudioLink will keep you connected.

AudioLink & RONDO 3
Stay Connected


All at Your Fingertips

Want to adjust RONDO 3’s settings? Decide between the FineTuner Echo remote control or the AudioKey 2 app on your smartphone. Additionally, with AudioKey 2, you can easily and conveniently get detailed battery level information directly from your Android or iPhone.

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 day at the beach, 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

With WaterWear, you can keep your RONDO 3 safe while swimming or bathing. Whether you are playing in the ocean 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.

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Look and Feel Confident

Look and feel good with RONDO 3. RONDO 3 can blend in discreetly with your hair or stand out with our colorful Design Covers. There are also Simplicity Covers, so locating the button is easy for new recipients and caregivers. We also offer a Mini Cover if you want to make your RONDO 3 even lighter.


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 lies in its super soft electrodes. Find out about MED-EL's electrodes and how they help you make the most of your hearing.  

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The Charging Pad is not manufactured by MED-EL.

* Immersion in water (up to a maximum depth of 1 m for 60 minutes).

 RONDO 3 comes with a choice of five standard covers. Design Covers, Simplicity Covers, and a Mini Cover are available for purchase separately.

Technical Data

Width: 35.8mm
Length: 44.9mm
Height: 11.9mm

Audio Processor

Dimensions & Weight

  • Length: 44.9 mm
  • Width: 35.8 mm
  • Height: 11.9 mm
  • 14.7 g with Mini Cover and magnet M1
  • 15.9 g with Standard Cover and magnet M1

Product Features

  • All-in-one design
  • 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 app
  • 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
  • Music streaming via AudioStream Adapter or AudioLink
  • 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)

Color 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.

*** 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.

***** Fine-structure coding is not indicated for pre-lingual children in the USA.

Contact Us

Have you or your child been diagnosed with a hearing loss? Do you want to talk to someone to better understand your options? Our team of hearing professionals is ready to answer any questions you may have to help you decide what is right for you.