Westone UM Pro 10 (Blue) + Audio Technica ATH-M20X

Westone UM Pro 10 (Blue) + Audio Technica ATH-M20X

Signature Series Professional Monitor Earphones and Professional Monitor Headphones


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Westone UM Pro 10 Blue

Signature Series Professional Balanced Armature Driver Monitor Earphones
Quantity: 1

General Features:

Product Specifications:

  • Frequency Response: 20-16,000 Hz
  • Sensitivity: 114dB
  • Nominal Impedance: 25 Ohms
  • Passive Noise Attenuation: 25dB
  • Cable:
    • Detachable: Yes
    • Cord Length: 50" (1.3m)
  • Plug Size: 3.5mm

Audio Technica ATH-M20x

Professional Monitor Headphones
Quantity: 1

What's In The Box?
  • 1 x ATH-M20X headphones
  • 1 x 1/4" snap-on adapter
  • 1 x Owner's manual
  • 1 x Limited 2-year warranty

General Features:

  • Wired Sound Isolating Over-Ear Monitor Headphones
  • Designed with your DJ/Recording lifestyle in mind
  • Adjustable headband for comfortable listening sessions
  • Tuned for low-frequency performance
  • Closed-back dynamic monitor headphones
  • Primary Color: Black
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

Product Specifications:

  • Driver Size: 40mm
  • Frequency Response: 15-20,000 Hz
  • Sensitivity: 96 dB
  • Nominal Impedance: 47 Ohms
  • Cable:
    • Detachable: No
    • Left side entry
    • Tangle-free straight design
    • Cord Length: 9.8 ft. (3m)
  • Plug Size: 3.5mm

Headphone Design

Headphone Type

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.

Headband 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.

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.
Headphone Application

This is the application that the headphones are designed for. Each application has unique features that make it perfect for particular uses.

DJ: These headphones are durable, loud, and will often allow for one ear listening.

Gaming Delivers explosive sound and allows you to communicate with others.

Home Hi-Fi: These audiophile headphones are engineered to produce high fidelity and accurate audio.

Home/Office: These headphones are designed to produce rich, brilliant sounds that the artists would appreciate.

Sports: Designed for active use. These headphones are made to stay in (or on) the ear during workouts.

Kids: Feature noise limiting technology so that your little ones don't damage their ears listening to music too loud.

On-the-Go: On-the-go headphones are lightweight and often fold up for easy storage and portability.

Student: Compact and rugged enough to survive life in a backpack; inexpensive enough to not hurt the wallet of a student.

Studio: Reproduce music perfectly without any coloration. Look here for reference quality studio monitoring headphones.

Traveler/Airplane: These headphones are compact, lightweight, and have a portable design.

Home Hi-Fi
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.
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.
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.

Bluetooth means that the audio signal is transmitted from your device to the headphones via a Bluetooth connection.

Corded or Bluetooth means that the headphones can be used as corded headphones or as Bluetooth headphones. They have an input in one or both earcups for use as a corded headphone while they also have a built-in battery for use as Bluetooth wireless headphones.

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

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.
Connector Type
The type of connection the headphones use to connect to receive the audio signal from a music source. Traditional headphones use an analog 3.5mm headphone jack. Newer technology has allowed digital signals to be sent directly to the headphone using an Apple Lightning or USB-C cable.
Jack Size
Refers to whether the headphones use a 3.5mm or 1/4" headphone jack connection.
Jack Angle

The Jack Angle refers to the angle of the input jack on the headphone cable.

Straight Jack: Straight plug with no angle.

Angled Jack: Angled plug, usually a 90 degree angle.

Swivel Jack: A swivel jack is able to swivel between a straight plug and an angled plug.

Angled Jack
Detachable Cable
Refers to whether the cable can detach from the headphones. If a pair of headphones has a detachable cable, the cable can be replaced with a longer cable, one with (or without) a microphone or if you accidentally damage the cable.
Color Shades
Primary color shades of the headphones.
Refers to materials used to build the headphones. Most headphones are built from some combination of plastic and metal to give you a durable pair of headphones.
Ear Cushion/Earbud Material
Refers to the material that the ear cushions/earbuds are made from. Ear cushions and earbuds are available in a variety of materials, ranging from basic rubber eartips to plush leather ear cushions intended for maximum comfort.
Water Resistant
This refers to the level of water resistance of the fitness tracker. Some fitness trackers are water resistant and can be used while swimming, while others are only splash proof or should not be used near the water.
Ear Hooks
These headphones feature hooks that wrap around your ears for a secure fit.

Audio Features

Driver Type

The physical design of the driver in the headphones.

Balanced Armature:
A balanced armature driver uses a coil wrapped around an armature which is held in between two magnets until it is stimulated by an electrical current. When stimulated, this armature is magnetized which causes it to rotate one way or the other around a pivot point which moves the diaphragm to create sound. Balanced armature driver headphones are generally earbuds and can have multiple drivers in each earbud.

Dynamic drivers are the most common driver type. They feature a permanent magnet, usually neodymium, a voice coil and a conical diaphragm to drive your music. A dynamic headphone driver looks pretty much identical to any typical home theater speaker.

Electrostatic drivers are made up of an extremely thin membrane, usually a coated PET film, stretched between two metal plates. An electrical signal is applied to the metal plates to create an electrical field which, depending on its polarity, draws the speaker diaphragm toward one of the plates which forces air through the perforations in the diaphragm which generates the sound wave.

Planar Magnetic:
A planar magnetic driver is made up of a large membrane suspended between two sets of oppositely aligned magnets. An electric charge is applied to the membrane to induce movement and produce sound waves.

Balanced Armature
The opposition to electric current, a higher impedance means a higher electrical resistance. This is measured in ohms.
25 ohms
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".
114 dB
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 - 16000 Hz
Audiophile headphones represent some of the finest headphones available. Audiophile headphones produce genuinely outstanding sound quality as well as extraordinary build quality, components and comfort. They are truly the finest headphones available.
Built-in Amplifier
This refers to whether the headphones have an amplifier built-in.

What is in the Box?

Main Product
The main product in the box.
Westone UM Pro 10 Blue Earbuds
Accessories included with the headphones
Replacement Ear Tips
Paperwork included with the product.
User manual
Warranty/Registration card

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


Seattle, WA

thoughts on the Westone UM-10 Pro

February 22, 2015

The following review is for UM Pro 10 Blue, which is a part of the bundle you are viewing.

I own many balanced armature IEM'S, predominantly Etymotic. The Westone UM10 was my first choice for getting to know the Westone brand.

Sonic Electronix provided excellent service with the lowest price that an authorized dealer is allowed to charge. I highly recommend doing business with them.

The UM10 appears to use transducers that are similar if not identical to other low-to medium priced IEM's, such as the ETY HF5. The sound signature of the UM10 is slightly different depending a great deal on the ear tips that are used. By design, the acoustic path from transducer to your inner ear canal can be much longer that with various deep-insertion IEM's. This affects the sound.

Getting a good, tight seal with the UM10 will depend upon how the Universal Fit body of the UM10 fits your outer ear. If you can get the body to fit closer to your ear canal, you can get a better seal. If, as in my case, the body does not allow the nozzle and tip to fully penetrate into the ear canal, some modifications must be made. And in my case I successfully modified aftermarket ear tips to get a good seal. This meant that the acoustic passage from the transducer to my ear canal is a bit longer than usual and that does color the sound somewhat.

The sound that I get from the UM10 is very satisfying in my opinion. I sometimes wear the UM10's for many hours, and sometimes without any signal at all just to enjoy a bit of silence. I forget that I'm wearing them. For shear comfort I prefer the Westones over other IEM's that are not as flush with my outer ear.

If Westone wanted to extend the length of their orange-coded silicone tips by two or three millimeters and make them two millimeters or so larger in diameter they would fit my somewhat larger ear canals perfectly. But Westone customer service wants to sell me custom tips instead, that would end up costing me as much or more than the UM10's themselves. I wish I had smaller ears.

I expect that most customers can get a good seal with the exceptional variety of tips that Westone supplies with the UM10. Their tips are excellent quality compared to competitor's tips. I'd like to see one more size in the Westone lineup, though, just one step larger. The Westone silicone tips are better than any other silicone tips I've owned, made of superior, more durable materials.

By the way, the Westones will not provide the ultra-deep penetration that IEM's like Etymotics will unless (I assume) you adopt the custom fit tips. So anyone who needs greater attenuation of ambient sound will not be satisfied with the Westone universal, using universal tips. Compare the ambient noise attenuation specifications for both the Westones and the Ety's and you will see what I mean. Again, this is a function of the depth that the tips penetrate into your ear canal. And everyone has their own preferences. Some may prefer less isolation than others. Professionals who require extreme isolation will not balk at the price for purchasing custom molds.

The Westones are perfect for what they're intended for. They are very accurate in mids and mid-to-high ranges (some may say too accurate). I replaced the green acoustic filters in my UM10's with red to enhance the lower frequencies. This had only a slight impact on 1800hz and up, which I compensate for by boosting the level just a tad which replaces the higher frequencies back to 'normal' and boosts the lows. This modification provides very accurate base response - not boomy - but crisply precise, as a single transducer balanced armature IEM should sound on the lower end.

I recommend the UM10 to anyone who wants to gain experience with IEM's and potentially graduate to a higher level of performance. It will take you quite a while listening to the UM10 before you start thinking about purchasing a more expensive multi-driver IEM. The UM10 Pros, when properly fit, are a very satisfying product.

By the way, Westone customer support admits that the acoustic filters are replaceable, but they want you to send them into the factory for replacement. In my experience the filters are a fairly tight fit but do come out with a standard filter tool. BE CAREFUL!! Do not force the removal tool into the nozzle any further than necessary or the plastic nozzle will crack!

Standard Knowles acoustic filters fit perfectly in the Westone nozzles (Mouser Electronics sells them, get the correct diameter).

That's my two cents.

When I'm prepared to have custom molds made to order I will purchase other higher-end Westone products in the future, based on my experience with the UM10's.

By the way, no matter what anyone tells you, break the UM10's in for several hours or so before making any judgements as to sound quality. And NEVER accidentally overdrive them. Use a good ultra-low output impedance headphone amp for best results (especially for low-end response).

Thanks again to Sonic Electroniks for their honest and enthusiastic service.

No, I'm not a paid shill (or even an unpaid one). I just take my sound and my ears seriously and I like to encourage others to do the same.

22 of 26 found this helpful

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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 UM Pro 10 (Blue) + Audio Technica ATH-M20X

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Westone UM Pro 10 (Blue) + Audio Technica ATH-M20X

Signature Series Professional Monitor Earphones and Professional Monitor Headphones


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