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ACS T1 Triple Driver IEM

 The world’s greatest soft silicone in-ear monitor just got even better..

Adding a touch of refinement

The new T1 utilises the same three incredible drivers as its predecessor offering the largest bass driver in our range alongside mid-range and treble drivers so clear and rich that you can pick out every nuance of your music. The integrated crossover means our engineers have been able to push this combination even further giving you even more detail whilst retaining all of the body and breadth that you expect resulting in perfect balance and unparalleled depth whatever it is that you’re listening to..

The same accommodating approach

Just like any ACS product, the new T1 is manufactured from soft medical grade silicone giving you a fit like no other earpiece. We use the softest material in the industry to give you unparalleled isolation in the most demanding environments with a consistent seal at all times and, because your earpiece can flex with your ear as you move or sing, your monitors stay comfortable without fatigue or irritation. In addition to comfort and isolation, using silicone allows us to seal the speakers into the mould and take control of their acoustic environment, this means we leave no room for the shape of your ear to affect how your monitors will sound or for your drivers to misbehave so they sound just as our technicians intended every single time. 

So much thought into such a small object

ACS in-ear monitors are designed and produced according to some simple principles that we think help us to focus on what’s important rather than just chasing the pack. Our earpieces are flush and discreet in the ear, we don’t just throw more drivers into the mix in the hope that it will make the monitors sound better, particularly if that means delivering ear shattering volumes. We pay attention to every aspect of the T1, from the 3.5mm plug right to your eardrum to make sure it’s performing as it should and we don’t do as others do if we don’t believe it is right. Based on our proprietary cable design, the new T1 offers removable cables featuring one of the smallest and most resilient connections around.

Keeping the connector as small as possible means that we can keep the cable discreet and mounting the socket right in the silicon means your cables will stay put in performance but come loose if the cable is pulled from the ear minimising the risk of damage. Not only that but by simply moving the pins from the plug on the cable to the socket in your monitor we’ve minimised the chances of damage to the cable even when it’s not connected. With the pins in the socket sunk into your earpiece there is no chance of them coming to harm and with no pins at the cable end at all it’ll take a lot more than a size 13 Doc Marten to put you in need of a replacement.

All in the detail

It's the finishing touches that make every one of our hand-made monitors completely unique from a choice of cable colours to a selection of bespoke silicone finishes. Every monitor can be laser etched with lettering of your choice and is supplied in a customised rugged case to ensure your monitors are protected wherever you might travel.

All in the detail

It’s the finishing touches that make every one of our hand-made monitors completely unique from a choice of cable colours to a selection of bespoke silicone finishes. Every monitor can be laser etched with lettering or logo of your choice and is supplied in a customised rugged case to ensure your monitors are protected wherever you might travel.

The home of audio innovaton

In choosing ACS you’re choosing a refreshingly different approach to innovation. Our products have been designed and refined by everyone from our customers and sales people to our lab technicians and acoustic engineers so you can benefit from all of their combined experience. With a dedication to leading rather than following the field, ACS has set the bar for second generation silicone in-ear monitor design leaving others replicating our first generation breakthroughs.


SRP £649.00 

*Please check pricing with your dealer when booking your appointment.

This product does not feature built-in, sub miniature microphones.

ACS T1™ In-Ear Monitor now available from Selfridges (Tel: 01295 266665) for more information.

Available in the follow silicone colours:


T1 - SRP £649

Includes T1 In-Ear Monitors, 3.5mm to 1/4" Step-Up Adaptor, Kevlar™ Cable, Laser Etching, Soft Carry Pouch, Personalised Hard Case, Care and Maintenance Leaflet, Cleaning Tool and Comfort Cream.

Colour options:

ACS T1 and T2 (including Live! Series) available in:


Smoke Grey

Extension cable (1.1 metres) - £15

Product Downloads

Download the latest care and usage instructions

Download the latest product specification sheets

We'll keep your ears on file...

ACS is pleased to announce the introduction of a new state of the art scanning technology that means ALL customers that order custom made hearing protection and in-ear monitoring products from ACS will have their ear shape on file at ACS for up to 4 years. The device will scan the impressions and save as a file on the database so customers can order new products or replacements instantly without the need to have new impressions taken. What's more, this service will not cost customers anything extra on top of the standard product charge, it is just a little something we want to do to make your experience with us even more enjoyable!

Please be aware that the scanning service began on May 1st 2010 so will only apply to customers that ordered thereafter. 


'The intimacy and "natural" sound of the new T1s is just second to none'

Regarding the new T1s, I am extremely pleased with them. The built is exceptional and the new wire prevents any form of microphonics without giving up on comfortability as well. The intimacy and "natural" sound of the T1s is just second to none and certainly something that I have found not present in any other IEMs I've heard thus far. Please help me relate to the guys in the lab that they have nailed it! :) They are certainly adding countless smiles to my listening sessions.


Ricci Riccardi

ACS IEMS particularly the T1 ambient are perfect for reducing the volume of a live show whilst giving me an accurate, crisp, controlled, punchy mix from the monitor board. The silicon makes them more comfortable to wear over a long period of time as well as helping them to stay in my ears and keep the seal which protects my hearing.

Ricci Riccardi, Drummer & MD for Tulisa

Mike Brown talks about his ACS T1's

For me ACS In-Ears have the best quality you can get. With these T1's you won't need anything else!

( At a sound check at Wembley Stadium, Friday 28th September. The biggest Gospel event in the country - Global day of Prayer music and singing )


Pro Sound News Europe

ACS monitors and hearing protection featured in the January 2008 edition of Pro Sound News Europe.

Read the article in full....

Stephen Fry bathes in the delights of his T2s

In his Dork Talk column for the Guardian, Stephen Fry confesses that his T2s turn him to the 'happiest puddle of butterscotch Angel Delight in Britain'.

Read more... 

Cost Calculator

Find out how much you could save with upto a 4 year forecast on custom hearing protection here

Calculate the savings cost as part of our Total Care Scheme here

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How to Buy

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Or redeem a CUSTOM VOUCHER at your nearest impression taker using our postcode store locator >> 

Please note - ACS products require good deep impressions in order to create a seal in the ear so it is important there is no wax block in the canal that will stop the audiologist from taking an impression. If you think you may have a wax build up, please visit your local GP for a consultation before booking an appointment with a dealer. You may be charged a fee if the audiologist is unable to take an impression. 

Contact Us

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Andy Shiach

ImageFind out more about ex-musician and owner of ACS Andy Shiach and why he's passionate about caring for hearing.
Learn more...

Where can I buy ACS products?

ACS products are available from a nationwide network of Audiologists as well as directly from us at our offices in Banbury. You'll need to make an appointment to have impressions taken which will then be sent on to us to allow us to manufacture your custom-fit products. To find your nearest Audiologist see the complete list on our Find A Dealer page. Please note that production time is always dependent upon orders received.  The skills and experience involved in making our hand-crafted products are not acquired overnight so employing more staff, whilst increasing our labour force, does not bring an immediate reduction in production time - please bear with us in times of increased demand for our products

Action on Hearing Loss

Action on Hearing Loss – formerly the Royal National Institute for Deaf People – is the national charity helping people confronting deafness, tinnitus and hearing loss to live the life they choose. It enables people to take control of their lives and remove the barriers in their way, giving them support and care, developing technology and treatments and campaigning for equality. Since the charity’s foundation in 1911, it has grown to be the UK’s leading deafness charity, supporting more than a quarter of a million people each year and running the world’s largest donor-funded hearing research programme.