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Invisible Hearing Aids 
invisible hearing aids

Thanks to miniaturised technology, this latest generation of hearing devices are smaller and smarter than ever

Whilst all hearing aids are designed to be as discreet as possible, those which fit inside the ear (rather than behind it) are the most subtle form available today.1,2 For this reason, invisible hearing aids are also commonly called ‘In-the-Canal’ hearing aids. 

Resound make invisible hearing aids known as ‘Invisible-in-Canal’ or ‘IIC’ devices.3 To ensure they fit you precisely, these are custom made using a mould of your ear. These IICs provide a variety of features to enhance your hearing experience, and ultimately, your quality of life.2,4

Invisible-In-Canal (IIC)

IICs are the smallest and most discreet hearing aids available from Resound.5 As they are worn deep inside the ear canal, they provide a natural sound quality and are less likely to pick up wind noise than devices that sit behind your ear.

invisible hearing aids
Invisible hearing aids are almost undetectable by others, but you will notice the difference

As part of the digital revolution of audiology, invisible hearing aids allow you to hear more of the sounds around you whilst being hardly noticeable in or around your ear. Everyone’s ears are different, so it’s important for a hearing professional (an audiologist or a hearing aid dispenser) to guide you through the next step to better hearing.3,6 Make an appointment today to find out whether invisible hearing aids are suitable for your needs and, if so, which kind will be best for you. 

invisible hearing aids

Frequently asked questions

Invisible hearing aids are a great option for most people with mild to moderately hearing loss.1,2,4,5 Although this covers a wide range of hearing levels, it is important for a hearing professional (an audiologist or a hearing aid dispenser) to also assess the shape and size of your ear canal to ensure they will fit comfortably.4

Find your local hearing professional

Unfortunately, invisible hearing aids are not suitable for more severe or profound hearing losses due to their tiny size.2–4 They are also not recommended for people with permanent holes in their ear drums (‘perforations’), those who struggle with excessive ear wax production, or anyone who has undergone mastoid surgery.2 Discreetly designed Behind-the-Ear (BTE) hearing aids are slightly larger than invisible devices and therefore have room to house the extra powerful speakers and special features needed to support severe hearing losses.1,2

Learn more about Behind-the-Ear hearing aids

Hearing aids are designed to help you hear speech more clearly, rather than just making everything louder.4,7 People may feel ‘cut-off’, isolated or even depressed due to hearing loss.1,2,8 Hearing aids can improve your emotional and mental wellbeing by giving you the confidence to take part in everyday social situations and help you rebuild personal relationships.2–4,7–9 
Invisible hearing aids are a great choice for people who would like discreet hearing aids; their tiny size has been associated with greater satisfaction and levels of use compared with larger devices.4,8,9

Find out more about custom hearing aids

The tiny size of invisible hearing aids is both their biggest strength and weakness compared with Behind-the-Ear styles:

  • People with poor dexterity may find invisible hearing aids tricky to handle and maintain (e.g. changing their small batteries)1,9
  • Invisible hearing aids are not suitable for people with severe or profound hearing losses as they need larger devices with more powerful speakers and special features (e.g. the telecoil loop) to support their hearing1–4

Read more about maintaining invisible hearing aids

After a little practice, invisible hearing aids are easy to take in and out, and to maintain.
Your hearing professional will demonstrate how to use them and provide you with written instructions to take home.10 You can also view our ‘how-to’ videos for help operating and cleaning your hearing aids. All ReSound hearing aids have colour-coded markings so, if you have a pair of hearing aids, you can easily determine which is for your left (blue) and right (red) ear.10 You may also want to consider asking your hearing professional to add a ‘stalk’ to help you put your hearing aids in and take them out more easily if you’re concerned.

View the ‘how-to’ videos for help operating and maintaining your hearing aids


All ReSound hearing aid controls are easy to operate by touch alone.

Learn more about ReSound apps

Yes – all ReSound invisible hearing aids are custom made to ensure they fit comfortably in your ear. To ensure a precise fit to your ear, your hearing professional will either take a 3D scan of your ear or make an ear ‘impression’ (mould) using special silicone putty. The silicone putty is inserted into your ear to get a perfect copy of your ear anatomy. This may feel a bit odd, but it is not painful. Your personalised hearing aid is then made using the 3D scan or ear mould.

Find out more about custom hearing aids

No – although they should be treated with the same care as other personal electronic items, such as mobile phones, to ensure they continue to work correctly.10,11 Invisible hearing aids need to be particularly robust as they spend most of their time in a ‘hostile’ environment for electronics.12 ReSound Invisible-in-Canal hearing aids have a special nanotech layer to protect them from moisture and ear wax.5,12 This patented coating is applied to the sensitive electronic components within the hearing aids, and has been proven to reduce the need for repairs and servicing.12 Here are some handy tips to help keep your hearing aid/s in the best condition possible:10

  • Keep them clean and dry – wipe the case with a soft cloth or tissue after use to remove grease or moisture
  • Do not use water or solvents to clean them, or immerse them in water or other liquids
  • Avoid dropping them on hard surfaces
  • Do not leave them in or near direct heat or sunlight, such as in a hot, parked car, as excessive heat can cause damage or deform the casing
  • Do not wear them while showering, swimming, in heavy rain or in a moist atmosphere (such as a steam bath or sauna)
  • Remove them when applying cosmetics, perfume, aftershave, hairspray, and suntan lotion as these might get into the hearing aid and cause damage

Read more about maintaining invisible hearing aids

ReSound Invisible-in-Canal hearing aids (IICs) are not compatible with smartphones.

However, ReSound’s other custom hearing aids and many of their Behind-the-Ear styles integrate seamlessly with smartphones.13 They work with compatible iPhone, iPad and iPod touch devices as well as AndroidTM smartphones for direct streaming of calls, music and other audio, such as audiobooks or podcasts.13 It’s easy to check if your smartphone is compatible.

Find out more about smartphone compatible hearing aids

No – unfortunately ReSound Invisible-in-Canal hearing aids are too small to include rechargeable batteries.5

However, this is an ongoing area of development, and many ReSound Behind-the-Ear hearing aids are rechargeable.14 The invisible hearing aids that ReSound offer use zinc batteries, which are considered safer and more environmentally friendly than traditional lithium batteries.5,15,16

Find out more about rechargeable hearing aids

Probably – hearing aids are not a cure for tinnitus, but they often help to alleviate it.11 
As hearing loss is a common cause of tinnitus, reinstating natural sounds can help to reduce its volume.11 Sometimes, people with normal hearing suffer with tinnitus.11 In these cases, hearing aids can also help to reduce tinnitus by subtly amplifying background noise or generating new sounds to distract your brain.10,11 
In fact, most hearing professionals recommend that people with tinnitus should try wearing hearing aids in both ears to see if they provide relief.11 
A specialist tinnitus soothing feature called the ‘Tinnitus Sound Generator’ program can be added to ReSound invisible hearing aids.5 Click on the link below to learn more about this program and the other ways you can take control of your tinnitus.
Learn how hearing aids can help to relieve tinnitus
ReSound invisible hearing aids are designed to be discreet, but don’t be fooled by their tiny size 
ReSound invisible hearing aids offer superior sound quality and breakthrough technology, encased in a custom shell to ensure they are a comfortable fit.5,15
invisible hearing aids

Embracing diversity of hearing: ReSound invisible hearing aids are available in a range of natural colours to complement your skin tone4

CIC lineup

Take the next step with a hearing professional
Hearing professionals (audiologists and hearing aid dispensers) have the necessary training and equipment to thoroughly assess your hearing and understand your unique needs.4,6,8 Using their experience, they will combine your hearing profile/level with your personal preferences, lifestyle, and budget to provide you with expert recommendations.3,4,6,8
Invisible hearing aids

Quick online test

If you can’t wait to see a hearing care professional, you can start by taking our online hearing test today. 

Take the free online hearing test


  1. National Institute on Deafness and Other Communication Disorders. Hearing Loss and Older Adults. July 2018. Available at: (accessed November 2021);
  2. Michels T, et al. Am Fam Physician. 2019;15;100(2):98–108;
  3. National Institute on Deafness and Other Communication Disorders. Hearing Aids. July 2015. Available at: (accessed November 2021);
  4. Pascal JT and Yueh B. JAMA. 2012;307(11):1185–94;
  5. ReSound GN. ReSound LiNX 3DTM IIC Datasheet. 2021. Available at: (accessed November 2021);
  6. Northern JL. Audiol Res. 2011.1(1):e20;
  7. Ferguson MA, et al. Cochrane Database Syst Rev. 2017;9(9):CD012023;
  8. Yueh B, et al. JAMA. 2003;289(15):1976–85;
  9. Walling AD and Dickson GM. Am Fam Physician. 2012;85(12):1150–6;
  10. ReSound GN. ReSound LiNX 3DTM User guide. Custom Hearing Aids. 2018. Available at: (accessed November 2021);
  11. British Tinnitus Association. Hearing aids and tinnitus. September 2019. Available at: (accessed November 2021);
  12. Groth T. Environmental hearing instrument protection the isolateTM nanotech way. Available at: (accessed November 2021);
  13. ReSound GN. App user guide. 2019. Available at: (accessed November 2021);
  14. Kirkwood B, et al. A hearing aid rechargeable system designed for ease-of-use. 2018. Available at: (accessed November 2021);
  15. Chung K. Trends Amplif. 2004;8(4):125–64;
  16. Caramia V and Bozzini B. Mater Renew Sustain Energy. 2014;3(28):1–12.