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Custom Made Earphones
Shaped to You. Shaped to Match Your Style.
The Way Music Was Meant To Be Heard
Up to 8 speakers in each ear, precisely tuned to give you an unmatched audio experience. Tuned and sculpted to bring you superior audio quality.
5 Sound Signatures
UE 5 CSX
Essential Earphones for Everyday Listening
These classic earphones deliver clear and balanced sound that's perfect for everyday listening.
- 12 Way Crossover
- 2 Single Low Balanced Armature
- 3 Phased Aligned Driver Housing
- 4 Single High
- 5 Balanced Armature
- 6 Sonic Filters
- 12 Way Crossover
- 2 Single Low Balanced Armature
- 3 Phased Aligned Driver Housing
- 4 Single High
- 5 Balanced Armature
- 6 Sonic Filters
UE 5 CSX
2 Speakers
The essential earphone for everyday listening
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mid
high
- 12 Way Crossover
- 2 Dual Low Balanced Armatures
- 3 Phased Aligned Driver Housing
- 4 Single High Balanced Armature
- 5 Sonic Filters
UE 7 CSX
3 Speakers
Get immersed in every detail of your music
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mid
high
- 13 Way Crossover
- 2 Dual Low Balanced Armatures
- 3 Single Mid Balanced Armature
- 4 Phased Aligned Driver Housing
- 5 Single High Balanced Armature
- 6 Low & Mid Sonic Filters
- 7 High Sonic Filters
UE 11 CSX
4 Speakers
Bold sound meets crystal clarity
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mid
high
- 14 Way Crossover
- 2 Dual Low Balanced Armatures
- 3 Dual High Balanced Armatures
- 4 Phased Aligned Driver Housing
- 5 Tuned Acoustic Pathway
- 6 Mid Low Balaned Armature
- 7 Mid High Balanced Armature
- 8 High Sonic Filters
UE 18+ CSX
6 Speakers
A dynamic earphone for those that live life loud
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UE 5 CSX
2 Speakers
The essential earphone for everyday listening
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mid
high
UE 7 CSX
3 Speakers
Get immersed in every detail of your music
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mid
high
UE 11 CSX
4 Speakers
Bold sound meets crystal clarity
low
mid
high
UE 18+ CSX
6 Speakers
A dynamic earphone for those that live life loud
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mid
high
UE LIVE CSX
8 Speakers
Step into the studio with your favorite artists
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high
Bespoke Fit — Right From Your Home
Because no two ears are the same.
Bespoke Fit — Right From Your Home
Because no two ears are the same.
How it Works
1
After you order your earphones, you’ll receive a UE Fitkit via mail.
2
Follow our simple instructions to create a highly accurate impression of your ears.
3
Mail back the Fitkit with the included prepaid shipping label.
4
We’ll build your bespoke earphones from scratch — and deliver them right to your door.
"Once you've lived with the UE 18 Pro, there's no going back to moderately priced 'phones. Treat it like the valuable piece of audio gear it is and it'll last 10 or more years." - Steve Guttenberg
"There’s no other choice than to put the UE 18 on our recommended CIEM list. Yes it’s that good and special - take my money!" - Lieven
“The precision and craft that goes into making these earbuds is mind-boggling.” - Brent Rose
"The UE 5 will not disappoint in the slightest, and so they earn our Editors' Choice." - Tim Gideon
Superior Sound Quality
We could talk all day about the incredible sound quality you’ll experience with UE CSX earphones. But impressive specs aside, they’re just pure joy to listen through. You’ll hear details that make listening to your favorite music more interesting than ever before.
Listen Like the Pros
From the Eagles to Ben Harper to Lady Gaga, the world’s top artists have relied on Ultimate Ears Pro in-ear monitors to deliver their best performances. We’ve handcrafted over 100,000 pairs since 1995, and we’re just getting started.
Design Yours
Design Yours
Not only are UE CSX earphones customized to the shape of your ears, you can match the design to your unique personality and style.
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Tech Specs
| description | UE 5 CSX 2 balanced armatures with an integrated 2-way crossover network | UE 7 CSX 3 balanced armatures with an integrated 2-way crossover network | UE 11 CSX 4 balanced armatures with an integrated 3-way crossover network | UE 18+ CSX 6 balanced armatures and 4 passive crossovers | UE LIVE CSX 8 balanced armatures, 1 True Tone Plus driver & 1 6mm neodymium dynamic speaker |
|---|---|---|---|---|---|
| Input Sensitivity | 119 dB @ 1 kHZ, 1mW | 124 dB @ 1 kHz, 1mW | 119 dB @ 1 kHz, 1mW | 105 dB @ 1 kHz, 1mW | 105 dB @ 1 kHz, 1mW |
| Frequency Response | 5 Hz - 22 kHz | 5 Hz - 22 kHz | 5 Hz - 22 kHz | 5 Hz - 40 kHz | 5 Hz - 40 kHz |
| Noise Isolation | -26db of ambient noise | -26db of ambient noise | -26db of ambient noise | -26db of ambient noise | -26db of ambient noise |
| Impedance | 21 Ohms @ 1 kHz | 17.5 Ohms @ 1kHz | 18 Ohms @ 1 kHz | 37.5 Ohms @ 1 kHz | 10 Ohms @ 1 kHz |
| Input Connection | 1/8" headphone jack; compatible with all systems | 1/8" headphone jack; compatible with all systems | 1/8" headphone jack; compatible with all systems | 1/8" headphone jack; compatible with all systems | 1/8" headphone jack; compatible with all systems |
What’s the Difference Between
UE PRO and UE CSX?
Both offer the same sound quality and utilize the same incredible technology. The only difference is the fit. UE PRO in-ear monitors fit deeper into your ear canal for the most secure fit possible — even if you’re doing backflips on stage. UE CSX earphones offer a fit that’s more appropriate for everyday listening.
