Audeze Euclid Planar Magnetic Closed-Back In Ear

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Planar Magnetic, Closed-Back, In-ear, Precision-milled Aluminum. Our new Euclid … More details

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Handcrafted in California, USA.

Planar Magnetic, Closed-Back, In-ear, Precision-milled Aluminum. Our new Euclid combines all of these features to deliver superior detail retrieval and sonic accuracy with a soundstage and dynamic range so robust you'll forget you're listening to a closed-back in-ear. The miniaturized 18mm single planar magnetic driver has no crossovers, resulting in superior cohesion across the entire frequency spectrum. Euclid is engineered for an incredible 105 dB/mW efficiency and a max SPL well over 120dB*, giving it the highest dynamic range of any in-ear in its size category. The smoothly contoured light weight design incorporates precision-milled aluminum and carbon fiber for a look that doesn't sacrifice elegance for comfort.

Patented 18mm Planar Magnetic Driver Technology

Euclid's 18mm planar magnetic drivers incorporate Audeze's patented Fazor™ waveguides to eliminate the phasing and distortion typical of most closed-back dynamic in-ears. The efficient single driver design also includes our patented Fluxor™ magnets and Uniforce™ voice coils to further reduce distortion, improve sensitivity, and create superior coherency across the entire frequency spectrum.

Planar Magnetic Driver Technology

Universal Connectivity

Euclid's high sensitivity and low impedance make it an ideal companion to any high resolution audio player. The gold plated MMCX plug terminations ensure a secure and durable connection whether you're using the braided cable we've included or your own custom design.

Universal Connectivity

Precision-Milled Aluminum Body

Smoothly contoured with an elegant matte black finish, Euclid's light-weight and durable body is precision-milled from solid aluminum and capped with a layer of carbon fiber.

The Perfect Fit

To give you the best fit with the best comfort, Euclid comes with 3 different styles of silicone and foam eartips including SpinFit and Comply models. Replacement eartips will be available in our Accessories section.

Ergonomic Design

Euclid's small 5mm ear port, contoured design, and light-weight construction work together to create an ergonomic fit suitable to most inner-ear shapes. The braided cable is routed behind the ear for enhanced stability, eliminating the need for ear hooks and improving comfort over extended listening sessions.

Press and Reviews

Audeze Euclid Review Headphone Guru
Headphone Guru

by Bowei Zhao
Apr. 2021

Audeze Euclid Review PC Mag
PC Mag

by Tim Gideon
Apr. 2021

Audeze Euclid Review Major Hifi
Major HiFi

by Alex Schiffer
Mar. 2021


Technical Features

In-ear, closed-back
Transducer type:
Planar Magnetic
Magnetic structure:
Fluxor™ magnet array
Phase management:
Magnet type:
Neodymium N50
Diaphragm type:
Ultra-thin Uniforce™
Transducer size:
18 mm
Maximum SPL:
Frequency response:
10Hz - 50kHz
<0.1% @ 100 dB SPL
105 dB/1mW (at Drum Reference Point)
12 ohms
Max power handling:
Min recommended power:
> 50mW
Wired connection:
Braided MMCX
15g/pair without cable
Sound port diameter:


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