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Westone UM3X-RC Clear Universal Monitor Earphones/In-Ear Headphones

In-Ear Triple Balanced Armature/3-Way Driver Universal Musicians Earbuds w/ Removable Cable (79292)


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Westone True-Fit Technology

Westone True-Fit Technology

Fifty years experience with in-ear applications has produced a compact and light universal earpiece with premium sound and fitment. The True-Fit sound port guarantees maximum comfort and unparalleled sound reproduction. Westone takes pride in assuring that your audio experience is not only good, but one of the greatest.

Balanced Armature

Balanced Armature

Operating on different terms than traditional drivers, balanced armature drivers are significantly more compact and efficient. This allows for a lustrous comfort and a precise end result. Westone implements sophisticated 2-way and 3-way multi-BA driver configurations to further improve sound detail and expand to a full and rich frequency response.

EPIC Removable Cable

EPIC Removable Cable

Get all of the same perks as the EPIC cable with the addition of a low profile connector system with a removable, user-replaceable cable. The EPIC removable cable provides the perfect combination of convenience and portability. This cable gives you the guarantee of a truly portable cabling solution.

Made in the USA

Made in the USA

Only the best musical instruments are those constructed by hand, so are the best earphones which reproduce your music. Westone Monitors are built by a dedicated staff of lab technicians and artist. Westone's USA products are always given the utmost attention to detail and manufacturing which reflects the rich and diverse country in which they are made in.

Product Features:

  • In-Ear Triple Driver Dynamic Universal Series Monitor
  • Incredibly snug, compact design holds tight in the ears eliminating hassle, and prevents the Monitors from being displaced
  • Professional 3-Way, Triple Driver technology (bass, mids, and highs) with passive 3-way crossover deliver life-like imagery, unsurpassed separation and detail, with full range music reproduction
  • Micro-Driver Balanced Armature Technology
  • Tangle Resistant Ultra supple braided cable design ensures maximum comfort and will hold form
  • Removable cable for increased portability, and personal customization
  • Designed with a tight, lightweight construction for even the active people
  • Over-the-ear cable design offers superior in-ear comfort and isolation from mechanical cable noise, and other microphonics
  • Low-Profile right angle 3.5mm connection designed for on-stage belt packs resists getting snagged, or caught and is ideal for Musicians/Artists
  • Includes different size tips for superior sound isolation and added comfort
  • Main Color: Clear
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product Specifications:

  • Frequency Response: 20-18,000 Hz
  • Sensitivity: 124 dB SPL @ 1mW
  • Nominal Impedance: 56 Ohms (@ 1 kHz)
  • Passive Noise Attenuation: 25 dB
  • Driver Type: Balanced Armature
  • Driver Features: Three-Way (3-Way) Crossover (Passive)
  • Number of Drivers: 3 (Per Earbud)
    • Highs (Treble)
    • Mids (Mid-range)
    • Lows (Bass)
  • Item Weight: 12.7 grams (0.445 ounces/0.0278 pounds)
  • Cable: EPIC Removable Cable
  • Cable Connection: Detachable/Removable Cable
  • Cable Length: 50" (4.16 Ft/128 cm)

Package Includes:

  • Westone UM3X-RC Clear (Part# 79272)
  • Premium Comfort Comply Foam Tips (All Sizes)
  • Star Silicone Ear Tips (All Sizes)
  • Triple Flange Ear Tip
  • Portable Travel Pouch Carrying Case
  • In-Line Volume Control
  • 1/4" Adapter (Female 1/8" to Male 1/4")
  • Cleaning Tool
  • Owners Manual
  • Warranty Registration Card

Product History:

Westone UM3X-RC Clear thumbnail
(newest, current model)
Westone UM3X thumbnail
(previous model, replaced by Westone UM3X-RC Clear Universal Monitor Earphones/In-Ear Headphones)
Westone UM3X Clear (79511) thumbnail
(previous model, replaced by Westone UM3X Clear (79291) Earphones Professional In-Ear Monitor Headphones)

Headphone Design

Headphone Type

Headphone type refers to the construction of the headphones.

Around the Ear means that the headphones wrap around the ear to provide a secure fit. This is most often seen in active and sports headphones.

Around the Neck means that the headphones wrap around the neck. This is also seen in active and sports headphones.

Earbuds means that the right and left sides of the headphones are separated and will fit securely into the ear. These are small, compact, and user friendly.

Over the Head headphones mean that the right and left speakers are connected with a support that goes over the head and rests on top. This is the typical headphone type.

Earpiece Design

This is the design of the earpieces on the headphones. Some headphones go inside the ear, while others rest on the outside of the ear. This helps you know exactly what type of headphones you will be receiving.

In-Ear: The ear buds go into the ear. Most often, the right and left ear buds are two separate pieces.

Enclosed-Ear: Usually are found on the larger headphones. They rest on top of the ear and have padding for comfort, as well as enclosing the ear to the speaker. This type of headphone helps to filter out surrounding noise.

On-Ear: This type of headphone involves the speaker sitting gently on the ear without going in the ear or sealing it off.

Specifically For
Some headphones can use an IR Transmitter in your vehicle, while some can be plugged into your media device and be used on the go or at home.

This is the lifestyle that the headphones are designed for. Each style has unique features that make it perfect for particular people.

Designed for those that are active. These headphones are made to stay in the ear during workouts. Whether you frequent the gym a lot or go running outside in the fresh air, these active style headphones will be your best friend.

For those that need the best in music quality. These audiophile headphones are engineered to produce high fidelity and accurate audio replication.

Disc Jockeys (DJs) require a special type of headphone that can meet their professional needs. These headphones are durable, loud, and will often allow for one ear listening.

Fashion Enthusiast:
For those that want to make a fashion statement with their headphones. Not only are these headphones designed with great sound quality in mind, but also great looks!

This lifestyle speaks for itself! If you love video games and want a pair of headphones that will deliver explosive sound and allow you to communicate with others, this is where you need to shop!

Music Lover:
These headphones are made to sound great. They are designed to produce rich, brilliant sounds that will play your music in a manner that the artists would appreciate. These headphones are for those that love music.

Musical Production / Recording Artists:
You're a music creator. Whether you're producing and mixing it down or in the studio recording yourself, you need a pair of headphones that will reproduce the music perfectly without any coloration. Look here for reference quality studio monitoring headphones.

Headphones need to be affordable and durable to keep up with the student lifestyle. A variety of styles can be considered a pair of student headphones.

Those that often find themselves on planes or on the road a lot. These headphones are compact, lightweight, and have a portable design. Some of the headphones in this lifestyle will feature noise cancellation technology that will help shut out outside noise.

Fashion Enthusiast
Music Lover
Acoustic Principle
The basic design of the headphones. There are 3 different types: Open: Have ports that allow air through the back of the diaphragms, enabling the headphones to sound like the music is coming from an outside source. Closed: Completely sealed and have no air passing through the diaphragms. Sounds like you are in a closed off room. Semi-open: Have slots or ports in the back of the cup and are partially open. This allows for a mixed sound between an open and closed headphone.

General Features

Noise Reduction technology removes unwanted noise from a signal. Background or ambient noise can be removed to produce clearer speech and enhanced hearing. Typically these Active Noise Canceling (ANC) headphones are powered and use batteries to activate the noise canceling technology. Also referred to as Noise Reduction or Noise Cancellation.
Headphone Connection
This is how the headphones connect to the audio source.

Corded means that the headphones use a cord to transfer the audio signal.

Wireless means that the audio signal is transmitted wirelessly to the headphones.

1/4" Stereo Jack Adapter
Some headphones will come with a 1/4" stereo jack adapter to connect the usual 3.5mm jack to a 1/4" stereo plug.

1/4" Stereo jack is a larger audio jack that select electronics have.

Volume Adjustment
Volume Adjustment means that the headphone (independent of the source) can adjust the playback volume. Many headphones and ear buds have in-line volume control, which allows adjusting the audible volume from a switch on the headphones cord. Other headphones have a volume knob on the headphone can.
Built-In Microphone
This means that the headphones or earbuds have a built-in microphone. This can be a microphone on the cord, built into the headphone, or even a boom microphone. These mics can be used for music devices like iPods, for Smartphones to make and receive calls, or for gaming purposes.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
20 - 18000 Hz
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
124 dB
Driver Size
This refers to the diameter of the driver (speaker) on each side of the headphone.
Driver Type
The physical design of the driver in the headphones.
The opposition to electric current, a higher impedance means a higher electrical resistance. This is measured in ohms.
56 ohms
Primary Color
This is the main color of the item.
Secondary Color
A color that compliments the main color of the product.

Specials with this Item

Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating

D Man

New Orleans

Westone IEMs

September 23, 2013

This is my 3rd set of Westones. The first two were UM2s. Loved them! Left one set on an airplane & stepped on & crushed the other. I moved up to the UM 3 model. They are comfortable while delivering INCREDABLE quality.

6 of 14 found this helpful

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Russian Federation

Perfect sound

July 24, 2013

Very good quality of sound at first and nice design with removable cables that make possible use this product a lot of time!

4 of 10 found this helpful

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ZeroNoise 5 Series 3.5mm (1/8") mini-jack extension cable with oxygen-free copper wire

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Product Summary


Model Number

UM3X-RC Clear





Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Westone UM3X-RC Clear Universal Monitor Earphones/In-Ear Headphones

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