RONDO Audio Processor

As the first all-in-one cochlear implant audio processor, RONDO set a new benchmark in design. All the parts, including the microphone, battery, and coil, are integrated into one compact unit, making RONDO comfortable to wear and easy to maintain. What’s more, you can go for up to five days before needing to change the batteries.

RONDO Audio Processor

Reliable Simplicity

RONDO combines great sound quality and easy usability in one compact device. This makes RONDO comfortable to wear, particularly if you use glasses, and easy to hide under your hair.

  • Great sound quality
  • All-in-one design
  • Wireless connectivity
  • Easy to use
RONDO Effortless Listening
RONDO Automatic Sound Management

Adapting to You

Never miss out on the sounds around you. RONDO uses Automatic Sound Management technology to adapt to the sound levels in your environment. The result? Less time spent switching settings and more time spent focusing on the sounds you love.

RONDO Connectivity
RONDO Smartphone Connectivity

Stay Connected

Keep connected to the sounds in your environment. Whether watching TV on your tablet or chatting on the phone, there are many ways to connect your RONDO so that you don’t miss a moment. In public venues, you can also connect to hearing loops or use wireless microphones to focus on the most important sounds.

RONDO Batteries
RONDO Battery Pack

Long-Lasting Power

Experience great sound for up to 75 hours at a time. RONDO’s extensive battery life gives you days of uninterrupted hearing, meaning you can focus on your hearing, not your batteries.

Want flexible power options? RONDO’s Mini Battery Pack is a compact external device, which lets you power your processor with regular AAA batteries, or a rechargeable DaCapo PowerPack.

RONDO WaterWear

Make a Splash

Enjoy your favourite sounds—even in the water! RONDO’s reusable WaterWear covers are simple to attach and keep your processor safe and dry in any kind of water. So whether you’re on a tropical beach or just relaxing in the bath, you can make the most of your hearing.

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RONDO Colours
RONDO Discreet Design

Blend In

Make your hearing stand out, not your audio processor. RONDO has a streamlined, discreet design, which can be easily hidden under hair. Available in four natural shades, there is a colour to complement every hair tone and help your RONDO blend in.

  • Placeholder-AP-StyleNordic Grey
  • Placeholder-AP-StyleAnthracite
  • Placeholder-AP-StyleEbony
  • Placeholder-AP-StyleCreme
Rondo Skins
RONDO Design Skins

Wear it Your Way

With customisable adhesive skins from DesignSkins, you can customise your RONDO to suit your style. Choose from thousands of colourful designs, or upload your own for a truly unique look.

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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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See why hundreds of thousands of people have entrusted MED-EL with their hearing.

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Find all the information you'll need to care for your RONDO.

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Share experiences with other MED-EL recipients on social media.

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Technical Data

Width: 37.2mm
Length: 44.1mm
RONDO Audio Processor Size
Depth: 12.1mm
RONDO Audio Processor Size

Single-Unit Audio Processor

Product Features

  • All-in-one design
  • Automatic Volume Control with Dual-Loop AGC
  • Input Dynamic Range (IDR) of 78 dB
  • Omnidirectional microphone
  • Supports 250 spectral bands
  • Frequency Range 70-8,500 Hz
  • Four program positions
  • Continuous volume and sensitivity control
  • 2 LED indicator light
  • Biocompatible according to Standard ISO 10993-1
  • Latex-free*


  • Compatible with all MED-EL multichannel cochlear implants
  • MAX Programming Interface
  • MAESTRO System Software
  • Mini Battery Pack
  • FineTuner Remote Control


  • 18.5g (as delivered with standard magnet and batteries)

Up to 5 days of use with a set of 3 high-power zinc-air batteries (type 675).

Magnet Strength
Diametric magnet available in 5 strengths, axial magnet available in 5 strengths.


  • Integrated telecoil
  • Direct connection with Mini Battery Pack (standardized Euro-Audio 3-pin connection)

Sound Processing Features

Sound Coding Strategies
Available strategies via MAESTRO Sytem Software:

  • 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)
  • Supports 250 spectral bands
  • Biphasic or Triphasic stimulation pulses


WaterWear cover

  • 9 uses per package.
  • 3 WaterWear covers per package. Each cover is reusable up to 3 times.
  • 9 adhesive strips per package. Each strip can only be used once.
  • Rated IP68
  • Waterproof up to 4 meters depth.
  • Can be used in salt, fresh, and chlorinated water.
  • Only to be used with non-breathable batteries such as silver-oxide or alkaline.

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.

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.

* 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.