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Siemens Centra Active Hearing Aids


Siemens has replaced this with newer models in the Siemens Pure Series.

Ready to purchase or have questions? Call 1-800-301-3137

The Active family of open ear/open fit digital hearing aids by Siemens consists of the entry level CIELO 2 Active and premier technology CENTRA Active.

Like the name implies CENTRA Active was designed for active life styles.

CENTRA Active comes with a broad array of automatic features to make dealing with impaired hearing easier than ever. By listening to hearing aid wearer’s concerns and developing technologies to answer these concerns Siemens made CENTRA Active a hearing aid that is easy to adapt to and wear even in less than perfect conditions. CENTRA Active takes CENTRA technology into the field.

CENTRA Active automatically provides optimized performance in any sound environment without any intervention by the wearer needed. Adaptive Directionality™, Data Learning™, Sound Smoothing™, and e2e wireless™ (ear-to-ear) are all technologies designed to give the hearing aid wearer acoustic comfort and natural sound.

For more technical and lifestyle information about hearing aids click here to view our General Information page.


The two most common technologies used in hearing aids are analog and digital. Digital is newer and considered to be much more flexible, capable of doing more operations, and the only technology used in modern hearing aids.
Open Fit Type Call for Info.
Human speech ranges in frequencies roughly from 250 to 6000 Hz. Hearing aids are built so that this group of frequencies (250 to 6000 Hz) is divided into smaller groups, called bands or channels.
Multiple memory settings can be programmed into the aid to give the user the ability to cope with changing sound and noise environments with the push of a button.
Technology Level Call for Info.
Volume Control
Volume control is generally considered to be a manual adjustment that the user can control. All hearing aids have automatic gain control designed to make soft sounds audible and loud sounds tolerable. This is done automatically within limits programmed into the device.
Available with Remote
On-Board Control Type
Controls on hearing aids usually have one or more of:
1. A momentary button used to change from one memory to the next
2. A button used to increase the level of volume
3. A rocker switch where pushing on one end does one function while the other end does another function
4. A wheel that will control volume
Call for Info.
Remote Control Available
Remote controls for hearing aids are small enough to comfortably fit in a pocket. A remote control will enable more functions than can be put on a hearing aid itself.
Directional Microphones
Microphones are the electronic component that picks up sound. Microphones are very small and can be made to pick up more sound in one direction than all others. This is called a directional microphone.
Noise Reduction
Technology to separate voices from other sounds is continuously being improved. Each manufacturer has a patented process and trademarked name for noise reduction.
Sudden Noise Protection
This feature helps make hearing aids acoustically comfortable by dampening sudden loud noises, such as a dropped dish.
Wind Noise Protection
Wind noise is an important feature for those that spend time in the outdoors by reducing the roar of wind across the microphone. This feature is improving but is not effective in gusty wind conditions.
Feedback Management
Acoustic Feedback, is also known as squealing, buzzing, 'your aids are talking to you', etc.
Telecoils help with telephones that are rated hearing aid compatible.
Aid-to-Aid Communication
Communication from one hearing aid to the other is a very low strength signal designed to keep both hearing aids operating in the same mode at the same volume.
Bluetooth Capable
Being able to couple your hearing aids with a BlueTooth-enabled device, such as a cell phone, allows phone conversations to be heard through your hearing aids.
Direct Audio Input (DAI)
DAI is only on Large and Full Size hearing aids due to the need for terminals on the outside of the case. Using DAI allows other devices to connect directly to the hearing aids and input their audio signal.
Battery Size/Color
Conventional Hearing Aid Batteries cost less than a dollar per battery and are very easy to change.
13 (Orange)
Warranty 3 years
Loss/Damage Warranty 3 years


Siemens Active Series of open ear/open fit hearing aids

  • Digital 16-channel open ear hearing aid featuring eight fully adjustable compression channels means high performance in a wide range of noise situations
  • For mild to moderately severe hearing losses, CENTRA Active will fit a wide range of hearing losses
  • SoundSmoothing™ technology, Siemens CENTRA Active hearing aid recognizes and reduces annoying noises like crinkling paper, silverware on plates, and even throwing the keys on the counter. Voices come through, but noise is smoothed and reduced.
  • DataLearning™ technology helps CENTRA Active learn how loud you want the world to be, and keeps it there.
  • e2e wireless™ Optimized solution for binaural fitting lets you locate the direction of sounds are by keeping both hearing aids in balance.
  • The high-performance, automatic, and multi-channel adaptive directional microphone adjusts to the noise around you. Directional microphones are one of the best tools for hearing conversation you want to hear in noisy environments.
  • Automatic and adaptive feedback cancellation reduces the annoying squeals that hearing aids have been known for in the past.
  • Adaptive noise reduction and adaptive speech enhancement, along with music detection, means CENTRA Active constantly monitors the changing sound environments of your daily routine to optimize how you hear.
  • eWindScreen™, wind noise reduction system reduces the roar of wind across the microphone port.
  • Siemens CENTRA Active is available in the following colors: beige, brown, grey, granite, silver, black, transparent, and translucent fun colors: purple, green, blue, orange and pink (download Customer Brochure below to see colors)
  • Battery type 13
  • Alerting tones for low battery voltage

Precise Review

Siemens CENTRA Active open ear or open fit hearing aids are designed for people that want a hearing aid that allows them to hear well during demanding work or recreation activities.

Outdoor sports and indoor workouts are now authorized.

Our customers tell us that you do not need to worry about wearing hearing aids while exercising and during inclement conditions, which make CENTRA Active a great choice.

Data Sheets/Manuals
Not all information in these documents are relevant to US consumers.

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Contact Precise Hearing

Precise Hearing's trained specialists are happy to assist you in choosing the right hearing aid solution for your unique loss. They can also:

  • Help determine how to read your hearing test
  • Help you find the tubes, domes, and other accessories that fit your current hearing aids
  • Offer support for hearing aids and/or accessories that you have already purchased through Precise Hearing

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