Digital Hearing Aids. HD 420

PRODUCT – HD 420 DIGITAL HEARING AID. New HD 420 hearing aid

PRICE – £399.00





The HD 420 digital hearing aid is one of the best in its class and price range. Sitting at the lower end of the pricing structure you could be forgiven for thinking that it is a basic model.


Nothing could be further from the truth. This slick, slim and extremely small device has as much technology packed into it as some models costing 3 times the price. It is a very discreet device that sits behind the ear and is connected to the earpiece through a very slim plastic tube.


The HD 420 is a READY-TO-WEAR device. No fitting or hearing test required. It is fully programmable to match hearing test results. All you have to do is supply hearing with your latest audiogram and they will do the rest.

Who is the HD 420 hearing aid for?

This device is suitable for pretty much anyone. It is great in social situations due to its noise reduction capabilities. It is equally good for both work and home environments.


The technology available with the HD 420 will ensure that your hearing ability is at its very best in virtuously any situation. It’s dirt and moisture resistant capabilities make it a very robust device which will help to prolong its lifespan.


The Pros and Cons of the HD 420.

The Pros.

The HD 420 Hearing Aid is loaded with the latest digital technology, designed to provide excellent sound quality, comfort and discretion to the wearer. Being automatic, it’s exceptionally simple to use, despite the complex nature of the technology. The volume control has been kept on a manual basis, leaving you firmly in the driving seat when it comes to controlling the hearing aid’s sound levels.


The HD 420 Hearing Aid offers every feature you could possibly need to make your hearing as clear and natural as possible. Say goodbye to those days when you entered a crowded room and failed to understand what was being said in front of you. HD 420 hearing aid


With speech enhancement technology and dual adaptive microphones, you can focus on a conversation while the premier noise reduction feature melts away unwanted background sound.


With Hydro-guard, the device is water and dirt resistant, extending the life of the device and making it easier to clean. Being automatic, there is no need to make fiddly adjustments. It’ll all happen seamlessly, which is perfect if you like to keep things simple.


The Cons.

The only thing missing, in my opinion, is connectivity. In this day and age, everything seems to be able to connect to iPhones and smartphones. I think all hearing aids should be built with this option included.


This is a harsh criticism and in no way takes away from the fantastic technology included in this device. If being connected to a smartphone or other such device isn’t important to you then the HD 420 is perfect. The bottom line for any hearing aid is the sound quality it gives to the user and this device provides an exceptional quality of sound.


Key features of the HD 420.

Behind-the-ear digital hearing aid

Hydro-guard – means it is water and dirt resistant

Contemporary, sleek design

Manual volume control

Adaptive noise reduction – to dampen down confusing background noise

Multi-memory – to easily customise your device to fit your listening needs

Dual directional microphones – to help you focus on speech

Feedback reduction shield – helps to filter unwanted whistling

Tele-coil compatible

Dynamic speech enhancement – making speech clearer

Operates using a 312 battery – more power for longer

Low battery warning indicator

8 sound processing channels

30-day money back guarantee

12 months manufacturers warranty


Tools and training for the HD 420 digital hearing aid.

Because hearing aids are such delicate devices, they need to be handled very carefully and treated correctly. To many suppliers simply sell you the device and then leave you to it.


If you purchase your devices from hearing you will have access to 3 short instructional videos. They will show you how to.


HD420 Insertion and Removal. Damaging your hearing aid by simply pulling it out of your ear is all to common. Knowing the correct way to do things helps to prevent unnecessary repairs.invisible hearing aid


HD420 Cleaning and Maintenance. A lack of cleaning and looking after your hearing aids will result in a poorer performance. Getting into the right routine from the beginning will ensure that your devices are always working at their very best.


HD420 Battery Insertion and Operation. Knowing the correct way to insert these tiny batteries will allow you to be able to do it in a matter of seconds.


These instruction videos only last about 2 minutes each but are a great help in learning the correct way to look after your new hearing aids. They are always available on the hearing website.

Why purchase from Hearing


When reviewing products I think it is just as important to look at the supplier. After some bad experiences with other suppliers I began to use Hearing a number of years ago. They have a very extensive range of hearing aids as well as other assistive listening devices.


I have found their quality of service to be second to none. From the beginning you will be put in contact with one of their fully qualified audiologists rather than a sales person. Their attention to detail is fantastic. The reasons I am happy to recommend them are,


  • A chance to make a saving – given their competitive pricing. As they’re an online company, they have significantly fewer overheads than those on the high street. It means any savings they make can be passed on to their customers.


  • A speedy delivery service – means you can order your hearing aid today either via their Customer Care Help Line or the Internet and they will endeavour to get the device delivered to you as early as tomorrow.


  • Free professional advice – is available when buying one of their hearing aids. They have a team of qualified hearing aid audiologists on standby to answer any questions you may have concerning hearing requirements, performance related issues or fitting enquiries. All you have to do is ask.


  • Hearing aids are pre-programmed – to assume a high-frequency requirement most commonly linked to age-related hearing loss. They can, however, be altered to meet your specific needs. All you need to do is send them your most recent audiogram to and they will reset it accordingly.


  • A 30-day money back guarantee – means you can return the product and receive a full refund if you’re not completely satisfied with the purchase. This is the most important one of all. It allows to you try the devices for a full month to make sure that it is exactly what you want and need.

Final summary on the HD 420 digital hearing aid.

I am still trying to figure out why this device is at the lower end of the pricing scale. The technology available in the HD 420 is usually only seen in devices much more expensive.New HD 420 hearing aid


This is a high quality hearing aid. It is suitable in virtually every situation. It has a clarity of sound that is very impressive and the device is very small and discreet. At only £399.00 it won’t break the bank.


If you are looking for a new hearing aid then you would do well to give the HD 420 a closer look.



As always, I hope this has helped. If you need further information then please get in touch. I appreciate all comments and suggestions. Please leave them below and I will answer back as soon as possible.

Reviews for the HD 420 digital hearing aid.


A really good buy

Review by sheila wylde (Posted on 23/12/2016). I upgraded from a HD 350 . What a difference ! The audiologist advised me to have the HD 420 after a lengthy discussion on the telephone . The volume control lets me adjust it to suit different situations and the noise reduction programme is very effective . The sound quality is superb , I’m glad I upgraded it has made a real difference .


Your choice for clarity in noise! More control than audiologists want you to have

Review by Can You Hear Me NOW?! (Posted on 26/08/2016). Not just good…..the best hearing aid I have ever (20 Years!) owned. I have tried alot, but this is amazing. I hear everything, but the volume control makes it easy to change for MY liking. I never seem to get programmed to the volume that is right for me – so I like being in control. It’s a pretty small szie compared to many I have owned and really does a great job in noise which is a benefit I wasn’t expecting.



3 Replies to “Digital Hearing Aids. HD 420”

  1. I have a problem keeping the part that goes into the ear canal in place, thus I have lost several hearing aids. Please give me the telephone number of someone that I can talk with about how your unit will assuredly fit and stay in the canal

    1. Hi Bill,
      Thanks for getting in touch. The problem you are having is the most common complaint I hear about. Having a properly fitted hearing device is critical to ensuring the hearing aid works to its full capacity.
      With most hearing aids now you can get a small silicon tip that fits over the piece that goes into the ear canal. They usually come in a pack of 3 different sizes so one of them should fit you particular ear canal size.
      If you contact HEARING DIRECT.COM you can speak to one of their professional audiologists. They will want to know what type of hearing aid you have and they will be able to advise what the best solution is for your personal circumstances.
      I have used this company for years and have found their service to be second to none. The little silicon tips are not expensive but can make a world of difference to how your devices operate.
      If you click on the link here it will take you to their home page. You can then contact them through email or phone or through a live web chat. I hope they can get you sorted and would be delighted if you would come back to the site and let me know how you get on.
      Good luck and take care.

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