It’s time to hear
what you’ve been missing.

Everyone has a different story

Perhaps you woke up one morning and found that you couldn’t hear on one side. Maybe you went through childhood struggling to hear even though you tried hearing aid after hearing aid.

The CochlearTM Baha® System is not like a normal hearing aid and, depending on your situation, could make an immediate and positive impact on how well you can hear and communicate.

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"The Baha System has opened up a whole new world for me, and for the first time in my life I’m able to hear really well on both sides.*"

Debra, Cochlear Baha recipient

What is single-sided deafness?

Single-sided deafness (SSD) is the loss of all or almost all hearing in one ear.

You can be born with SSD, it can happen suddenly or over time.
It makes locating sounds and hearing in noisy environments difficult. The hearing loss associated with SSD is sensorineural, when the inner ear – or less often, the hearing nerve – isn’t working correctly.

Although SSD cannot be cured, there are solutions, like a Baha System that may restore the sensation of hearing from both sides.

What is a Baha System?

When we think of hearing, we think of our ears picking up sound, but did you know that we can also hear sound via the skull? Bone conduction is a term to describe how sound waves travel through the skull to reach the inner ear.

A Baha System works on this principle of bone conduction and uses the skull to send clear, crisp sound directly to the inner ear, bypassing the middle ear.

How can a Baha System help me?

A Baha System picks up sounds from your deaf side and sends them directly to the inner ear on your hearing side, via the bones of your skull.

The benefits of a Baha System include:

  • Clearer and more crisp sound.1
  • Better speech understanding in noise than hearing aids.2,3
  • Hearing with two ears allows you to identify sounds both near and far, as well as those that occur around your head.4

How is a Baha System different from CROS hearing aids?

Contralateral routing of signal (CROS) hearing aids can be a solution for SSD. With a CROS hearing aid, you wear a device in both ears. A microphone placed on your deaf side, transmits to a receiver on your hearing side.


The Baha System

  • Better speech understanding in noise2
  • Can be worn on one side
  • Sends sound directly to your inner ear

CROS hearing aids

  • Needs to be worn on both sides
  • Sends sound via the outer and the middle ear to your inner ear

Baha Stories

Carole, Cochlear Baha recipient

Carole lost her hearing on her left side in 2009.
She stopped going out and socialising as much.
Getting a Baha allowed her to take part in the activities she loved again.



Cynthia, Cochlear Baha recipient

Cynthia woke up on the 4th of October realising something was terribly wrong. She could no longer hear out of her left ear.
When she tried the Baha System she felt a sense of wholeness again and decided to go for surgery.

“With this amazing technology I’ve been able to really live my life normally and haven’t had to compromise in any way.”


  1. Gustafsson J. BCDrive performance vs. conventional bone conduction transducer. Cochlear Bone Anchored Solutions AB, 629908, 2015.
  2. Niparko JK, Cox KM, Lustig LR. Comparison of the bone-anchored hearing aid implantable hearing device with contralateral routing of offside signal amplification in the rehabilitation of unilateral deafness. Otology & Neurotology, 2003 Jan;24(1):73-78.
  3. den Besten CA, Monksfield P, Bosman A, Skarzynski PH, Green K, Runge C, Wigren S, Blechert JI, Flynn MC, Mylanus EAM, Hol MK. Audiological and clinical outcomes of a transcutaneous bone conduction hearing implant: six-month results from a multicentre study. Clin Otolaryngol. 2018 Oct 25. doi: 10.1111/coa.13248. [Epub ahead of print].
  4. Wazen JJ, Spitzer JB, Ghossaini SN, Fayad JN, Niparko JK, Cox K, et al. Transcranial contralateral cochlear stimulation in unilateral deafness. Otolaryngology-Head & Neck Surgery 2003;129(3):248-54.

Please seek advice from your health professional about treatments for hearing loss. Outcomes may vary, and your health professional will advise you about the factors which could affect your outcome. Always read the instructions for use. Not all products are available in all countries. Please contact your local Cochlear representative for product information.
*Views expressed are those of the individual.