Astell & Kern PATHFINDER Hybrid IEM Earphones




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PATHFINDER Hybrid IEM In-Ear Monitor Earphones, by Astell&Kern.

Campfire Audio and Astell&Kern have earned the recognition of audiophiles around the world thanks to their excellent technology introduced with their first collaboration model (the AK Solaris X) which is a celebrated product that recreates the deep, rich sound of Astell&Kern. Now, A&K and Campfire Audio have joined forces once again to present PATHFINDER, a new hybrid IEM that offers amazing technology and sound.

Astell&Kern and Campfire Audio take innovation to a new level by combining their advanced technologies and designs to create a product worthy of the name PATHFINDER. To realize this dream, they repeatedly tested numerous designs to produce a structure different from existing IEMs and added an innovative Dual-Diaphragm Balanced Armature Driver, finally achieving the best sound. Enjoy a unique experience through PATHFINDER, a more advanced Hybrid IEM.

A completely new IEM design was needed for a wider frequency range, realistic reproduction, and a perfect balance. To achieve this, PATHFINDER has a new Dual-Diaphragm Balanced Armature (BA) Driver from Knowles for the key part of the midrange, dual BA drivers for high frequencies, plus two dynamic drivers with a hybrid diaphragms that create bass and midrange.

A Radial Venting Acoustic Chamber, newly developed by Campfire Audio, is applied to the two Custom 10 mm Dynamic Drivers. The 3D-printed chamber design naturally expresses the intense low-frequency sound produced by the two dynamic drivers while preserving the unique sound of the Dynamic Driver.

PATHFINDER combines Astell&Kern’s design philosophy, which expresses the purity of original sound with its philosophy of ‘light and shadow’, with Campfire Audio’s design philosophy, which expresses its awe of nature, gave birth to the ‘Mountain Peak’ inlay design. The inlay is individually produced from stainless steel and consists of six different sides that depict light and shadow. Together, these luminous sides form the shape of a brilliant mountain that rises from the earth. PATHFINDER, with its precision production, expresses dynamic beauty and displays the value of the premium craftsmanship and innovation that Campfire Audio and Astell&Kern pride themselves in.

Custom Beryllium Copper MMCX connectors are more resilient against wear and tear than regular brass connectors, providing a robust mating mechanism; one that is typically made from soft brass. This selection of a harder material extends the life of the component and the earphone.

PATHFINDER comes with three silver-plated copper cables allowing the earphones to reach their full performance potential. The silver-plated OFC copper Litz cable is a newly produced flat cable, with enamelled silver-plated copper wire conductor to offer clearer, extended sounds. The flat cable prevents tangling, can be wound for easy storage, and has minimal cable distortion. It is over-moulded for increased durability and finished with a metal housing.


  • Collaboration between Astell&Kern + Campfire Audio.
  • Hybrid Dual-Diaghragm BA Driver / Dynamic Driver IEM.
  • Radial Venting Technology.
  • Tuned Acoustic Expansion Chamber T.A.E.C.
  • 3D Printed Interior.
  • Supplied with x3 silver-plated copper connection cables (2.5 / 3.5 / 4.4 mm)
  • Premium craftsmanship and materials, hand-assembled.


  • Model: Pathfinder
  • Transducer Types:
    • High - Custom Dual Balanced Armature Drivers + T.A.E.C.
    • Mid - All-New 'Dual Chamber' Balanced Armature Driver Technology from Knowles
    • Mid-Low to Sub-Bass - All-New Dual Custom 10mm Dynamic Drivers paired with Radial Venting Technology
  • Cables: 2.5 mm / 3.5 mm / 4.4 mm Silver-Plated Copper
  • Material / Design: Aluminium shell, hand-polished stainless steel threaded spout, stainless steel inlay and parts
  • Frequency Response: 5 Hz - 20 kHz
  • SPL: 94 dB @ 1 kHz 13.49 mV RMS
  • Impedance: 6.2 Ohm @ 1 kHz
  • Total Harmonic Distortion: Less than 1 %


  • 2.5 mm Silver-Plated Copper Cable.
  • 3.5 mm Silver-Plated Copper Cable.
  • 4.4 mm Silver-Plated Copper Cable.
  • 5 pairs of Final Audio E-Type Tips (XS/S/M/L/XL)
  • 3 pairs of Campfire Audio Marshmallow Earphone Tips (S/M/L)
  • 3 pairs of Silicon Earphone Tips (S/M/L)
  • Earphone Cleaning Tool.
  • Leather Zipper Case.
  • Earphone Protection Sleeve.
  • Earphone Tips and Cable Storage Pouch.

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Astell & Kern
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Headphone Features

Dynamic Driver Size:
10 mm
Transducer Type:
Balanced Armature + Dynamic
Ear Cup:
Closed Back
Silver / Black
Headphone Type:
  • Hybrid BA + Dynamic Headphones
  • HiFi Headphones
  • In Ear Headphones
  • iPhone and iPod Headphones
  • Smartphone Headphones
Frequency Range:
5 - 20,000


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Our Advantages

  • Worldwide shipping, fast, insured & tracked. Details
  • Clear, simple returns policy. Details
  • UK-based company, established since 1985. Details
  • Visit our London showroom to demo a huge selection of headphones, earphones & portable players. Details