Nov 1, 2010

(Last updated Nov 5, 2020)

CROS and BiCROS Hearing Aids

The vast majority of people with hearing loss have what is called symmetrical hearing loss.

Symmetrical hearing loss (as the name implies), means the hearing is symmetrical (the same) in both ears.

Much less common, is single-sided deafness (SSD), where one ear is deaf and the other isn’t.

Single-sided deafness requires a special kind of hearing aid- either a CROS or BiCROS hearing aid.

In this post we’ll discuss everything you need to know about CROS and BiCROS hearing aids- including their benefits and limitations, prices, and some of the latest models available.

What is a CROS Hearing Aid?

The answer is in the name.

CROS stands for Contralateral Routing of Signals.

Or to put it in layman’s terms- the transfer of a signal (audio) from one ear to the other.

A CROS hearing aid transfers sound from the bad ear to the good ear.

This kind of hearing aid has two parts.

On the bad ear, there is a microphone and transmitter. Their job is to capture sound from that ear, and transmit it to the better ear.

On the good or better ear, there is a receiver, which picks up the signal from the transmitter, and then delivers the sound to that ear.

The animation below helps explain how a CROS hearing aid works

As shown by the animation above, with a CROS system, the unaided (bad) ear, captures sound from that side and transmits it to the hearing ear.

You may be a CROS candidate if…

You have one ear with close to normal hearing and another ear that is considered “unaidable”.

What do we mean by unaidable?

Unaidable means that there is so much damage to the auditory system that using a hearing aid in that ear does not provide any benefit.

You might have one of three problems that prevent you from using a hearing aid in the bad ear:

A dead ear, meaning that we can’t get any response from the ear during a hearing test.
Very poor ability to understand speech in that ear, even if amplified.
Inability to tolerate the loudness of amplified sounds in that ear.

What is a BiCROS Hearing Aid?

A BiCROS hearing aid looks just like a CROS hearing aid and works in the same way, with one difference-

On the bad ear, there’s still a transmitter that sends signals to the receiver on the better ear.

However, with a BiCROS hearing aid, the receiver that delivers sound to the better ear, also amplifies that sound.

The animation below helps explain how a BiCROS hearing aid works

As shown by the animation above, with a BiCROS system, the unaided (bad) ear, captures sound from that side and transmits it to the other ear while also amplifying the sound.

You may be a BiCROS candidate if…

You have one ear with some hearing loss, and another ear that is considered unaidable.

It’s like getting a hearing aid for your good ear, with the extra benefit of also being able to hear sounds from your bad side.

Why not just get the one hearing aid for your better ear?

Well, remember that there’s a large object – your head – in the way between your good ear and your bad ear. Your head blocks your good ear from hearing sounds coming from the direction of your bad ear.

As a result, you may have a hard time understanding people or picking up sounds that come from your bad side, even if you’re wearing a hearing aid on your good ear.

CROS & BiCROS Hearing Aid Pros and Cons

First, let’s talk about the problem with single-sided deafness.

If you have one good ear, and one bad ear, it may not seem like a big deal. After all, doesn’t the good ear allow you to hear everything?

It turns out that having two ears plays a pretty important part in our ability to hear the world around us.

Think about the fact that you have two eyes, and that both eyes working together allows you to see the world in depth.

Having two ears helps you to hear sounds with depth, in the following ways:

Better ability to locate where sounds are coming from.
More easily separate speech that you want to hear from background noise.

If you have single-sided deafness, you may struggle to hear in noisy places like restaurants. You may also find that you can’t tell the direction that cars are approaching from when you are crossing a parking lot.

Now that you know why single-sided deafness is a big deal, we can talk about the pros and cons of CROS and BiCROS hearing aids.

Pros of CROS and BiCROS hearing aids:

You may have improved awareness of sounds that are coming from the side of your bad ear.
You may find it easier to understand conversations in noisy environments.
When someone talks to you from the side of your bad ear, you may have an easier time understanding the person.
You may experience less fatigue when participating in social activities.

Cons of CROS and BiCROS hearing aids:

They are less common than traditional hearing aids, so you need to find a hearing care professional who has experience fitting these.
You have two devices to keep track of and supply with batteries. People with memory problems or dexterity issues may prefer a simpler solution of wearing just one hearing aid.
You need to get the sound balance just right between your transmitter and receiver side. Your hearing care professional can adjust this balance in the manufacturer software
You may hear worse in noisy situations where the noise is coming towards your bad ear, because the transmitter picks up the noise and sends it to your good ear. Your hearing care professional can give you the ability to turn off the transmitter at these times.
CROS and BiCROS hearing aids cannot fully replace having two ears, because some of the brain circuits involved in binaural hearing require the inputs to come separately from the auditory nerves of each ear. CROS and BiCROS aids only deliver sound into one ear.

CROS & BiCROS Hearing Aid Costs

How much do CROS and BiCROS hearing aids cost?

Just like with traditional hearing aids, the answer is- it depends, but the average retail price for an entire system will be between $3,000-$7,000.

However, you can find CROS & BiCROS hearing aids at much more competitive prices.

As compared to a set of traditional hearing aids, there is technically less equipment inside of CROS/BiCROS systems, resulting in (sometimes) a lower wholesale price from the manufacturers, and a lower retail price to you.

On the other hand, CROS and BiCROS hearing aid fittings take a lot of time for a hearing provider. Your hearing provider will likely spend more time programming these devices as compared to traditional hearing aids, and helping you understand how to make the most out of your devices.

So they may end up costing even more than a regular set of hearing aids would- it just depends.

Best CROS & BiCROS Hearing Aids

Because every hearing loss is different, as are user needs, there is no “best” CROS and BiCROS hearing aids.

However, certain systems have more functionality than others, and are requested more often by our customers.

As of November ‘19, we’re seeing many requests for CROS and BiCROS hearing aids that are rechargeable, Bluetooth, and can be small in-the-ear devices.

Below is an overview of our most popular CROS and BiCROS hearing aids.

Starkey Livio

Starkey Livio CROS
Highlights:

Available with your choice of lithium-ion rechargeable batteries or disposable batteries
Direct to iPhone Bluetooth compatibility
Ranging from $3149-$4648 for the entire system (with local care included)

Signia Silk

Signia Silk CROS

Highlights:

Available in small in-the-ear models
Can be controlled through a smartphone app
Ranging from $2649-$3848 for the entire system (with local care included)

Conclusion

Single-sided deafness presents unique challenges and has unique treatment options.

More important than the technology you choose, is that the hearing provider you work with has experience fitting this type of hearing loss- so don’t be afraid to ask them.

While many people are happy with CROS and BiCROS hearing aids, there are significant drawbacks to these systems, so don’t be surprised if they are not a good solution for you, but they are absolutely worth a shot.

A Question For You

Do you have single sided deafness and use CROS or BiCROS hearing aids?

Please share your experiences and insight below!

Jeff Hall Jeff is a California licensed hearing aid dispenser and the President of ZipHearing- one of the largest discount hearing aid suppliers in the United States. Jeff lives in San Diego, CA with his wife and 2 young daughters. You can learn more about hearing aids and watch Jeff on ZipHearing's Youtube channel.

You might also be interested in:

Best Cell Phones for Hearing Aids

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16 comments

Posted by cindy on 09/25/2015 at 8:11 pm | Reply |

I’m on my second pair of Widex cross we sent the set back because I was experiencing some electrical kind of interference with the cordless telephone and when I walk through the security alarm at the Walmart I just got this one now I’m still in my trial. And I’m experiencing the same thing is there something I can do about that
- Posted by Alina on 09/28/2015 at 4:03 pm | Reply |
  
  Hi Cindy,
  
  Unfortunately, the wireless interference is a problem for me too, but an infrequent one, so I’m willing to put up with in for the sake of being able to hear on my bad side. I suppose it depends on how much the problem is occurring. It does seem to stop when I turn off the mic side, which I have to do sometimes while checking out at Kohls or using the cordless phone at work to avoid that interference. Turning off the mic makes the interference stop.
  
  Hope that helps!
  Alina
Posted by Marie-Cat Hamel on 10/23/2015 at 8:56 am | Reply |

Hi Alina
I am a SSD person, I lived in Montréal Québec Canada, I am ready to buy my first hearing set BiCross, would you be able to refered my a professionnal in Montréal ?
thanks
keep the good job
Marie-Cat
- Posted by Alina on 10/26/2015 at 6:32 am | Reply |
  
  Hi Marie,
  
  Unfortunately, I am not familiar with any providers in Canada. You may be able to get directed to someone who can help you by visiting Widex.com and contacting them. I wish you best of luck in finding help for your hearing!
  
  Sincerely,
  Alina
  - Posted by John L (Jack) Miller on 06/17/2016 at 6:43 pm | Reply |
    
    Thanks for your detailed message. I’ve had SSD for more than 60 yrs. Have worn and aid in “good” ear, first phonak, now siemens, for the past 6 years. I’m exploring the possibility of BiCros. Do you know any fitters in the Phoenix, AZ area? Thanks
    Jack –
    
    Posted by Alina on 06/21/2016 at 11:13 am | Reply |
    
    I’m an Audibel wearer, and you can go to http://www.Audibel.com, click on Where to buy at the top of the page, and enter your zip code. It will bring up the closest Audibel dispenser to you.
    
    Good luck! It does take time to get used to the Cros experience but I think it’s very much worth it.
Posted by Alina on 03/03/2016 at 1:29 pm | Reply |

I was just fit today with the new Platinum A4 wireless bicros from Audibel. WoW! What a huge and tremendous difference! My Widex Dream 440 worked well for me these last 2 years, but I am amazed at how much better my new set is.

I was just sitting at a round table in the middle of a crowded room conversing with people about 8 feet away across the table. Do you know the last time I was able to do that? Never! I have never in my life been able to do that! I am astounded at the difference.

This is the closest I have ever felt to having normal hearing, and I am SSD since birth. I’m perfectly thrilled with the superior quality of this new set compared to my Widex.

Audibel is the company to check out for this massive improvement. Starkey is our parent company and they will fit them too. If you’ve been looking for a great cros / bicros product, get to an Audibel or Starkey dispenser ASAP.

Pros:
Hearing in noise!
Access to all memory settings in cros mode
Elegant design near invisible when worn
Hearing in noise!!
Fully customizable user controls
Wireless streaming capabilities from cell phone via surf link mobile remote
Hearing in noise!!!
No wireless interference
Did I mention that I can actually hear well in noise?

Cons:
Haven’t encountered one yet. This is one super happy half deaf girl!

This is a brand new product. Also remember that your outcome will only be as good as the person you are working with, so pick a good hearing specialist that will take the time to listen to you and get it right.

I cannot wait to start bringing this amazing advancement to my clients.
Posted by Jeff Hall on 05/09/2016 at 4:43 pm | Reply |

Note: Widex has just released their CROS device for the new UNIQUE line. If you need a CROS/BiCROS hearing aid, you might want to consider this aid! We sell the CROS transmitter for $1199 with local service included, and a 45 day 100% risk-free trial period. Give us a call for more info!
Posted by Diane on 07/26/2016 at 6:20 pm | Reply |

What is the average cost of cros bicros cros aids per pair,about.
- Posted by Jeff Hall on 07/27/2016 at 8:47 am | Reply |
  
  Hi Diane,
  
  It varies wildly. We sell CROS systems starting at $2398 for the pair, and they go up from there.
Posted by Harko on 01/27/2017 at 12:36 pm | Reply |

Widex cros lasts the same time as the hearing aid about 7 to 8 days
Posted by PJ on 07/04/2017 at 6:41 pm | Reply |

Having been a bicros wearer for over 35 years, I feel Phonak offers the best quality sound. I have used several other companies through the years and always come back to Phonak. I have had the longest life with the phonak bicros system. (Living in the humidity of LA, I tend to need new hearing aids every 3-4 years despite using Dry Caddy and every other brand of aid dryer available.
I have had the same audiologist for the past 33 years, and I attribute my hearing success to his willingness to work with me to fine tune my aids.
Posted by judy tucker on 06/24/2019 at 3:50 pm | Reply |

I have to have my left ear removed 2 years ago. I can hear fine on the phone with my right ear but have trouble in many other situations. I do have an ear canal to my left ear drum. I find I am missing out on so much now. Please, what can you suggest?
Posted by Ruth Anderson on 12/11/2019 at 7:45 am | Reply |

Thank you. My audiologist has suggested we try the cross over. I wear one hearing aid in the left ear. The biggest loss i is in the right ear but a hearing aid doesn’t do any good. If they set it to where I should be able to hear hear, it is easy too loud and hurts. Very distorted. Just wondered what the price was. This has been helpful.
- Posted by Jon on 04/11/2021 at 7:53 pm | Reply |
  
  This is just like my situation. I finally l got an audiologist to diagnose it properly and now I understand why I am never satisfied with hearing aids. I have a MRI tomorrow to see if I have a tumor being my right hear and is the cause of my right ear being faulty.
  I would like to know if you got a bicros system!! I have heard that it is a kind of “hit or miss” kind of thing and that there isn’t much of a selection.
  
  Jon
Posted by Richard D Oliver on 07/27/2021 at 2:53 pm | Reply |

I have bicros hearing aids. Used them for many years. The first set I had were wired and in the ear. The set I have now are behind the ear. They are great for around the home, but not so much when it’s noisy. I think I prefer in the ear. Who makes them? I feel I can direct sound better with in the ear aids.

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