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UE 11 CSX

UE 11 CSX

The UE 11 CSX features four speakers. They’re quick, punchy, tight, robust and full of low-end energy. With a dedicated sub speaker, they are perfectly tuned for big music and big beats.
Premium Sound
Noise Cancellation
8-hr Battery
Custom Fit
Bluetooth with Mic
Handcrafted
Color: Clear
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  • 30 Day Risk-Free trial
  • 1 year warranty
  • Easy at-home fitting

Premium Sound

The UE 11 CSX has four finely tuned speakers that are proprietary to Ultimate Ears, called balanced armatures. These speakers are professional grade and far superior to the standard speakers found in a majority of headphones. From the award-winning cable system to the connectors and interior wires -- you are getting the same exceptional product that touring musicians rely on for flawless performance.

Custom Sound Profiles

With our proprietary EQ app, you can choose from a variety of presets optimized for different listening experiences. Find the perfect amplitude for podcasts, classical, jazz or heavy bass -- or play around with the frequencies to match your personal taste and then store them in your Bluetooth cable.

All Day Comfort

Having a secure, custom fit also provides the most important benefit if you use your earphones for extended periods of time -- all day comfort.  Ultimate Ears are designed so you can travel, work, listen at leisure and forget about common irritations like ear soreness.

Noise Cancellation

Ultimate Ears are custom fit to create the closest-fitting seal possible between the earphone and your unique ear shape. The advantage of this fit is the physical exclusion of external noise, or what’s called passive isolation. Passive isolation blocks out the sound that is trying to get in, versus introducing new sounds to block out ambient noise. The result is 26 decibels of noise cancellation, as much, or more, than most other earphones on the market.

Swappable Cables

Each pair of Ultimate Ears CSX earphones come with both Bluetooth and auxiliary cables. Both cables are sweatproof, flexible, comfortable and feature our award-winning cable connection system, allowing for a quick and easy transition from your Bluetooth wire to your hard-wired, so when your battery dies, or you want to plug into in-flight entertainment, you can do so with ease.

"So simple. I thought the whole process was going to be cumbersome and it couldn’t have been any easier." Dominic N

Tech Specs

4 proprietary balanced armatures with 3-way crossover

INPUT SENSITIVITY

119 dB @ 1 kHz, 1mW

FREQUENCY RESPONSE*
5Hz - 22kHz 

NOISE ISOLATION
-26 decibels of ambient stage noise. 

IMPEDANCE
18 Ohms @ 1 kHz

BLUETOOTH VERSION
4.1, Multi-point

PROFILES
Handsfree, Headset. A2DP, AVCRP, SPP

INLINE MIC
MEMS, Omni directional

SENSITIVITY
-26dbBFS +-3dB

STANDBY TIME
110 Hrs**

CHARGING TIME
2.5 hours

BATTERY LIFE
8 hours** (4 hours + 4 more with included charging clip)

BATTERY TYPE
60 mAh Lithium Polymer in the device

BATTERY VOLTAGE
3.7V