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ACS Custom USA, LLC 

New York (Head Office)      Los Angeles

@ SIR Studios                   1616 Vista Del Mar Ave.
520 W 25th Street            Hollywood, CA 
New York, NY                  90028

646 559 5642       




Have an Etymotic Voucher? 

Click here for more information



Frequently Asked Questions

Welcome to our most frequently asked questions (FAQ) section that can give you the most upto date information and advice all all our our products, services and instructions for everything relatied from hearing protection and in ear monitoring.

Pendulum Endorsee


What is ACS’ address?

ACS @ SIR Studios 
520 West 25th Street,
New York, NY 10001


I have an Etymotic custom sleeves voucher, what do I do now?

Please follow the provided link for a step-by-step guide on how to use your Etymotic Voucher here


How do I find an audiologist?

ACS has a network of approved audiologists across the states that our customers can visit. To find your nearest audiologist, call us at 646-559-5642 or email This email address is being protected from spambots. You need JavaScript enabled to view it. .

Additionally, any audiologists, that aren’t included on the ACS network providers list can make impressions. You will take the impressions away with you and ship them directly to ACS with your information (Name, phone number, address, what you are purchasing.)

ACS will only accept ear impressions where the canal portion of the impression extends beyond the second bend of the ear canal and also includes the full concha detail.


How much do ear impressions cost?

The price of impressions depends on the audiologist. Often the price ranges between $35-$80. If you are in the NYC or Los Angeles area, ACS will make your impressions for free with purchase.


How do I purchase products from ACS?

There are a number of different ways to purchase from ACS.

Option 1: You can place orders directly through our online webshop. Once the order is received we will locate your nearest audiologist for ear impressions. You will then book yourself in with the audiologist for ear impressions and send them directly to ACS Custom @ SIR Studios, 520 West 25th Street, New York, NY, 10001.

Option 2: If we already have your impressions, you can call us at 646-559-5642 and make an order over the phone, and an ACS Customer Service Representative will take a credit card payment.

Option 3: If you are in the NYC area, you can come to the ACS at SIR Studios where we will take your impressions, and you can make an order and a payment.


How long does ACS hold my impressions for?

ACS will store impressions for 4 years. This means if you want to purchase another product or if you lost your current product you will not need to send another set of impressions to ACS.

How do I tell the left and right mold apart?

You will notice a colored dot on each mold. The blue dot is the left year, and the red is the right.

How do I put the molds in my ear?

The ear canal almost always points towards the top and back of your head. To insert into your ears place the flat surface pointing upwards, twist and apply pressure around the bend in your canal. You should feel the mold slide into place.

What are the green filters for in my IEMs? How do I use them?

The green filters are wax guards that are designed to protect the integrity of the sound outlet and the acoustic transducer, by preventing foreign material, such as wax, from entering the IEM.

To insert, turn the wheel on the wax guard so that the open circle is over a green filter. By using the shorter end of the blue pick, take out the filter and carefully push it into the sound tubes that are on the canal portion of the IEM.

To remove the filter from the IEM, use the longer side of the pick and spin so that the screw-like spirals catch the filter. Dispose of the used filters. Extra wax guard kits are available to purchase from ACS.

In the package, I received a cream and a pick. What are they for?

The comfort cream aids the insertion of your ACS product into your ears. The wax pick is designed to remove wax and dirt from the sound tubes in your product.

How do I apply for a job or internship at ACS?

ACS is always looking for talented people. Please send your cover letter and resume to This email address is being protected from spambots. You need JavaScript enabled to view it. .