Single-Unit Audio Processor


It’s Never Been Easier

Why is RONDO 2 so revolutionary? For the first time ever, there’s no need to change batteries or manipulate switches. Think of the possibilities: Hearing without any hassles. RONDO 2 is incredibly easy to use—making it perfect for anyone who wants an audio processor that combines discreet style and care-free simplicity.

  • Incredibly Simple
  • Wireless Charging
  • Sleek Design
RONDO 2 Easy of Use

Ease of Use

By combining wireless charging, a unique all-in-one design, and hands-free control, RONDO 2 is the easiest-to-use audio processor ever made. This makes it incredibly easy to use, even for users with limited dexterity or eyesight. And with a sleek, stylish design, it’s also the perfect choice for patients who want a discreet wearing option for their CI.

Wireless Charging

Wireless Charging

RONDO 2 uses Qi technology to wirelessly recharge its integrated lithium-ion battery. This means no more fumbling to open the processor to change batteries. Just place it on the charging pad and RONDO 2 starts charging.


All Day Battery

Set it on the charger at night and wake up to a full day of battery. Four hours of charging provides a full day of battery (up to 24 hours). The Mini Battery Pack also provides a back-up option to directly power RONDO 2 with a AAA battery.


One Touch Control

No cables, no switches, no worries. Just press one button and you’re ready to go. And RONDO 2 uses our proven Automatic Sound Management for hands-free control.

Microphone Covers

Microphone Covers

Blend in or stand out. RONDO 2 covers change in a snap, making it easy to change between more than 30 stylish designs and subtle patterns.

Water Resistance

Water Resistance

RONDO 2 is water-resistant to protect against rain, sweat, and everyday moisture. And with the sleek WaterWear cover, RONDO 2 is fully waterproof for swimming.



With a built-in telecoil, RONDO 2 makes it easy to stream wireless audio from hearing loop systems or from a phone through a Bluetooth® neckloop.

Hearing Performance

More Natural Hearing

When it comes to sound quality, it’s the whole system that counts. RONDO 2 uses our proven combination of Automatic Sound Management and unique MED-EL implant technology to deliver a more natural sound quality for a more enjoyable hearing experience.

Hearing Performance

Natural Loudness Growth 

Our Dual-Loop Automatic Gain Control instantly adapts volume levels to make loud sounds more comfortable and soft sounds easier to hear. With an extended loudness growth range and compression ratio (3:1), our loudness growth more closely follows natural loudness growth in the cochlea. 

This is an advantage for loudness balancing with bilateral CIs, or if the other ear has natural hearing, such as single-sided deafness or for bimodal listening with a contralateral hearing aid.

Structure Preservation

Our incredibly flexible lateral wall arrays can gently adapt to the shape of each individual cochlea to protect the delicate natural structures. Multiple recent studies have shown only MED-EL arrays enable 100% scala tympani insertions.

Scala tympani placement enables significantly better hearing outcomes. It also helps preserve delicate cochlear structures so patients can benefit from future therapies.

Literature Search Report (2020), Data on File, MED-EL n=1,399
O´Connell et al. 2016

Complete Cochlear Coverage

In natural hearing, the nerve fibers of the spiral ganglion are tonotopically organized and extend the full length of the cochlea. If an electrode doesn’t cover two full turns (720°) of the cochlea, it can’t stimulate these nerve fibers to provide accurate pitch-place match.  

Our long, flexible arrays can be safely inserted all the way to the apical region to provide natural tonotopic stimulation across two full turns of the cochlea. With complete cochlear coverage, recipients can enjoy a natural pitch match from the very beginning. This enables significantly better hearing performance and a more natural hearing experience for your patients. 

Data on file, calculated from mean cochlear parameters
CI Electrodes

FineHearing Sound Coding

In nature, the cochlea uses two types of sound coding. Place-pitch tonotopic coding is used along the whole frequency range. In addition to place-pitch coding, low-frequency sounds are also coded by rate. With this time-coding, the frequency of nerve signals is synchronized to the frequency of the sound below ~1000 Hz.

That’s why we created the only cochlear implant sound coding that mimics the natural time-coding for low frequencies and provides place-pitch match throughout the cochlea. By mimicking natural sound coding, FineHearing provides much more natural sound quality.

Peace of Mind

Peace of Mind

When it’s easy for them, it’s easy for you. With RONDO 2, you can rest assured that your patients will have a reliable, easy-to-use audio processor. There are only 3 components (processor, microphone cover, and magnet), so there is no need to replace cables or fiddle with opening the processor. This all-in-one design makes RONDO 2 both highly durable and user friendly for all ages.


With a wirelessly rechargeable battery and combined control unit & coil, RONDO 2 is designed for long-term durability. The only consumable is the simple-to-change microphone cover.

Retention Option

With a low-profile design and flexible fixation options, RONDO 2 stays right where it should. For extra security, you can clip RONDO 2 to hair or clothing.


With such intuitive handling, you’ll have peace of mind knowing that your patients can be confident in handling their new audio processor.


Why MED-EL: 
A Trusted Partner

For more than 30 years, MED-EL has been a trusted partner and innovation leader in hearing implants. We’re here to work together with you, and we’re committed to providing outstanding service and support for our professional partners. 

With the most advanced cochlear implant systems, we offer the best hearing experience for your patients and the best clinical experience for you. 

Contact Us

Ready to learn more about MED-EL cochlear implants?
Fill out our simple contact form and we’ll get in touch with you.

Personal Information

Clinic Information


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Technical Data


Width: 35.8mm
Length: 46.8mm
Height: 12.1mm

Audio Processor (Me1150)


  • Housing: Mixture of polycarbonate and acrylonitrile-butadiene-styrol polymer
  • Biocompatible according to Standard ISO 10993-1
  • Latex-free*

Product Features

  • All-in-one design
  • Splash-proof design with IP54 rating
  • Automatic Sound Management
  • Frequency Range 70–8,500 Hz
  • LED indicator lights (2)
  • Link-check function with LED indicator
  • Four program positions
  • Continuous volume and sensitivity control
  • FineTuner remote control
  • On/Off button on the processor
  • Tamper-proof design
    • Choking hazard avoidance
    • Attachment security measures

Rechargeable Battery

  • Integrated Lithium-ion battery
  • Up to 24 hours of use per charge**
  • Wireless recharging through compatible Qi charging pad
  • Battery life expectancy is typically more than 5 years
  • Mini Battery Pack provides back-up power option with AAA battery
    • Dimensions: 66 x 29 x 14 mm
    • Weight (without battery): <13 g
    • Usage time: Up to 37 hours with 1 AAA battery


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


  • Compatible with all multichannel MED-EL cochlear implants
  • MAX Programming Interface
  • MAESTRO System Software

Colour Options
Easy-to-change covers available in colours, designs and hair patterns

Glossy & Matte Covers
RONDO 2 Base Covers

Design Covers
RONDO 2 Design Covers

Hair Pattern Covers
RONDO 2 Hair Covers

Magnet Strength
Diametric magnet available in 5 strengths, axial magnet available in 4 strengths.

Sound Processing Features

Front-End Processing

  • Omnidirectional Microphone
  • Dual-Loop AGC
  • 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


WaterWear cover

  • Waterproof up to 4 metres deep
  • Can be used in salt water, fresh water and chlorinated water

Charging Pad***

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

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.
*** Charging Cycles dependent on individual usage.

  1. Vaerenberg, B., Govaerts, P.J., Stainsby, T., Nopp, P., Gualt, A., & Gnansia, D. (2014). A uniform graphical representation of intensity coding in current-generation cochlear implant systems. Ear Hear. 35(5): 533–543
  2. O’Connell, B.P., Cakir, A., Hunter, J.B., Francis, D.O., Noble, J.H., Labadie, R.F., Zuniga, G., Dawant, B.M., Rivas, A., & Wanna, G.B. (2016). Electrode location and angular insertion depth are predictors of audiologic outcomes in cochlear implantation. Otol Neurotol. 37(8):1016–1023.
  3. O’Connell, B.P., Hunter, J.B., Haynes, D.S., Holder, J.T., Dedmon, M.M., Noble, J.H., Dawant, B.M., Wanna, G.B. (2017). Insertion depth impacts speech perception and hearing preservation for lateral wall electrodes. Laryngoscope. 127(10):2352-2357
  4. Analysis based on mean cochlear values and clinical data. Data on file.
  5. Rader, T., Döge, J., Adel, Y., Weissgerber, T., & Baumann, U. (2016). Place dependent stimulation rates improve pitch perception in cochlear implantees with single-sided deafness. Hear Res., 339, 94–103.