SONNET 2 Audio Processor
Made for the most natural hearing in any listening environment
SONNET 2 is our latest BTE audio processor for MED-EL cochlear implants. From Adaptive Intelligence to wireless connectivity, SONNET 2 is packed with tons of new technology that’s made for the best hearing experience possible.
- Outstanding Hearing Performance
- Sleek Design
- Wireless Connectivtiy
Made for Everywhere
SONNET 2 is made for exceptional hearing performance, even in challenging listening environments. Automatic Sound Management 3.0 seamlessly adapts for optimal hearing and hands-free control. From busy offices to noisy restaurants, ASM 3.0 enables clearer, more comfortable hearing experience.
Microphone Directionality
Reduces noise from behind and focuses on sounds to the front for significantly better hearing in noise.
Automatic Volume Control
Dual-Loop Automatic Gain Control instantly adapts volume levels to make loud sounds more comfortable and soft sounds easier to hear.
Ambient Noise Reduction
Reduces continuous ambient noise—such as a desk fan—for easier, clearer listening.
Adaptive Intelligence
Intelligently adapts front-end processing to changing listening environments for the best hearing in any environment.
Wind Noise Reduction
Minimises continuous wind noise for improved listening in outdoor environments.
Transient Noise Reduction
Instantly attenuates sudden loud noises for comfortable listening in any setting.
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.
Microphone Directionality
SONNET 2 uses Microphone Directionality to mimic the natural pinna effect by reducing sounds behind and focusing to the front of the listener. This enables significantly better hearing performance in noisy environments.
Natural directionality provides significant advantage in everyday life, and Adaptive directionality provides a powerful boost in complex noise.
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. Our gentle arrays also enable hearing preservation, for combined electric-acoustic stimulation with SONNET 2 EAS.
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.
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.
Processor Design
SONNET 2 is a sleek, lightweight BTE processor with a modular design, allowing you to adapt it to best fit the needs of each individual. With built-in water resistance, flexible wearing options, rechargeable batteries, thousands of color configurations, and a durable design, it’s made for all-day comfort and performance in everyday life.
Mix & Match
With thousands of color combinations and stylish design covers, SONNET 2 lets your patients blend in or stand out.
Child Safety
With tamperproof design, DL-Coil link-check indicator, locking coil cable, and titanium battery pack locks, SONNET 2 offers the highest level of child safety available for CIs.
Rechargeable Batteries
Easy-to-use rechargeable batteries offer the lightest and most compact wearing option for SONNET 2. Or go for up to 4 days on disposable zinc-air batteries.
Ready for Water
Splashproof design provides protection against rain or sweat all day long. And with the WaterWear cover, SONNET 2 is ready for swimming.
Flexible Wearing Options
ActiveWear is the lightest behind-the-ear wearing option available. And with BabyWear, you can clip the entire processor to clothing, making it ideal for infants.
Optimized Handling
Upgraded design makes it easier to change microphone covers, use rechargeable batteries, and secure the battery pack cover.
Made for Connectivity
SONNET 2 makes it easy to stream phone calls or connect to music, movies, and television. With integrated 2.4 GHz wireless connectivity, SONNET 2 lets your patients connect to almost any audio source. Our all-in-one AudioLink accessory makes it easy to stay connected and our AudioKey app is packed with useful tools for everday life.
AudioLink
With AudioLink, you can stream phone calls right to SONNET 2. You can also connect to music or stream high-quality sound from TVs or tablets. AudioLink also has a built-in microphone, so you can use it as a remote microphone. This offers an easy-to-use listening boost in busy meetings and restaurants or for clearer listening in a classroom.
- Bluetooth Streaming
- Remote Microphone
- Direct Audio Input
AudioKey
With our new AudioKey app, you can control all the user settings of SONNET 2 with iPhone or Android. Guardian roles let you create multiple users’ profiles for controlling processors, for flexibility and security in managing multiple users & processors. Find My Processor shows the last place SONNET 2 was connected to the app. And My Stats shows an overview of usage information, including programs used and daily usage time.
- Remote Control
- Find My Processor
- Guardian Roles
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FineTuner Echo
The FineTuner Echo remote is a compact, easy-to-use remote with a built-in display. This bi-directional remote shows current settings, including program, volume, connectivity. E-paper display makes it easy to read, even in bright sunlight.
- Bilateral Support
- Integrated Speech Processor Test Device
- E-Paper Display
Why MED-EL:
A Trusted Partner
For more than 25 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.
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MAESTRO 8.0
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Technical Data
SONNET 2 Audio Processor (Me1510)
SONNET 2 EAS Audio Processor (Me1520)
Weight and Dimensions
- 6.1 g (with ActiveWear)
- 8.1 g (with Rechargeable Battery Micro)
- 10.6 g (with two 675 zinc-air batteries)
- DL-Coil: 4.6 g, 32.8 mm x 5.8 mm
- DL-Coil: 5 magnets available in 9 strengths
- Durable coil cables available in 3 lengths:
- 6.5 cm (2.6 in)
- 9 cm (3.5 in)
- 28 cm (11.0 in)
Material
- Processor & Coil: Mixture of polycarbonate and acrylonitrile-butadiene-styrol polymer
- Earhook: Polyamide (PA)
- Cable: PVC and TPE Evoprene
Compatibility
- Backwards compatible with all MED-EL multichannel cochlear implants.
- MAX Programming Interface
- MAESTRO System Software 8.0 and later
Product Features
- Frequency Range 70–9300 Hz
- Splash-proof design with IP54 rating
- Dual microphones
- Extended Datalogging
- Automatic Sound Management 3.0
- Tamper-proof design
- Secured earhook
- Locking battery pack
- Choking hazard avoidance
- Attachment security measures
- Locking coil cable (locked to coil and control unit)
- Link-check coil function with LED indicator
- Four program positions
- Continuous volume and sensitivity control with FineTuner Echo or AudioKey
- Supports Electric-Acoustic Stimulation (EAS)
Sound Processing Features
Front-End Processing
- Microphone Directionality (Omni, Natural, Adaptive)
- Automatic Volume Control with Dual-Loop AGC
- Wind Noise Reduction
- Ambient Noise Reduction
- Transient Noise Reduction
- Input Dynamic Range (IDR) of 78 dB (28–106 dB SPL)
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
Accessories
FineTuner Echo
- Dimension: 104 x 38 x 11 mm
- Weight: 32g (incl. Battery)
- Remote control with bi-directional communication
- Display
- Troubleshooting
- Battery status
WaterWear for BTE
- Waterproof cover
- Waterproof up to 4 metres depth
- Can be used in salt, fresh, and chlorinated water
Connectivity
Processor Features
- Integrated 2.4 GHz module for wireless communication
- Direct streaming for iOS and Android
- Integrated telecoil
- FM functionality via FM battery pack cover or RogerTM 21 from Phonak
AudioKey App
- Remote control
- Guardian functionality
- Datalogging
- Input selection
AudioLink
- Dimensions: 68 x 38 x 17.5 mm
- Weight: 35 g
- 2.4 GHz wireless device
- Remote microphone
- Hands-free phone calls
- TV streaming
- Music streaming
- Direct audio input (DAI)
Battery Options
Zinc-Air Batteries
- Up to 60 hours of use with a set of 2 disposable zinc-air 675 batteries
SONNET Rechargeable Battery
- Dimension: 22 x 14 x 7 mm
- Processor Weight with Battery: 9.1 g
- Usage time: Up to 10 hours
- Charging duration: ~4 hours
- Lifetime: >500 charging/discharging cycles
SONNET Rechargeable Battery Micro
- Dimension: 16 x 14 x 7 mm
- Processor Weight with Battery: 8.1 g
- Usage time: Up to 7 hours
- Charging duration: ~3 hours
- Lifetime: >500 charging/discharging cycles
SONNET Charging Unit
- 4 simultaneous charging slots
- Power & charging indicator lights
- USB powered: 5V DC, 500mA
- USB power adapter: 100–240V AC (~50/60 Hz)
SONNET 2 Mini Battery Pack
- Dimensions: 66 x 29 x 14 mm
- Weight (without battery): <13g
- Usage time:
Up to 37 hours with 1 AAA battery or
up to 16 hours with Rechargeable DaCapo Powerpack
- 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
- Dorman, M.F. & Natale S.C. (2018). Auto-Adaptive: A noise level-sensitive beamformer for MED-EL cochlear implant patients. J Am Acad Audiol.
- 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.
- 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
- 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.
- Müller, J., Brill, S., Hagen, R., Moeltner, A., Brockmeier, S.J., Stark, T., Helbig, S., Maurer, J., Zahnert, T., Zierhofer, C., Nopp, P., & Anderson, I. (2012). Clinical trial results with the MED-EL fine structure processing coding strategy in experienced cochlear implant users.
- Killan, C., Scally, A., Killan, E., Totten, C., & Raine, C. (2019). Factors affecting sound-source localization in children with simultaneous or sequential bilateral cochlear implants.
