Campfire Audio Fathom In-Ear Monitors

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Campfire Audio Fathom In-Ear Monitors

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Key info

  • Tailored for audiophiles with six custom balanced armatures for detailed sound.
  • Features a six-B.A. internal architecture for precision and technical performance.
  • Enhanced vocal performance with dual mid-driver assembly, coupled with custom low and high balanced armatures for precision and resolution.
  • New Six-Balanced Armature Architecture delivers crisp highs, accurate mids, and rich bass for precise sound reproduction.
  • Phase Harmony Engineering optimizes driver treatment for enhanced imaging, separation, resolution, and soundstage.

All specifications

Impedance 11.7 Ohms @ 1 kHz
Frequency response 5Hz - 20kHz
THD Less than 1%
Sound pressure level (SPL) 94 dB @ 1 kHz: 6.75 mVrms
Included accessories
What's in the box Fathom - Premium earphone crafted with care by Campfire Audio, Time Stream Cables - Black - Eight silver plated copper conductors in ribbon configuration - 3.5mm / 4.4mm Terminations Included, Select Case; Handmade Leather ‘Dimensional Folding’ Case, Breezy Bag Junior - Small mesh zipper case, Breezy Bag Micro - Two-pocket IEM pouch, Earphone Tips: Marshmallow and Silicon - 
Various Sizes

Fathom by Campfire Audio is an earphone made for audiophiles. Six custom-made balanced armatures deliver a detailed presentation with just the right touch of mid-band warmth that elevates vocal performance and offers a glowing musical experience.

Experience the culmination of nearly a decade of experience in the tuning and refinement of an all-balanced armature IEM. Fathom takes the long legacy of Campfire’s world-class precision and technical performance to its peak with our new six-B.A. internal architecture.

Utilizing a new dual mid-driver assembly, Fathom creates astounding richness, texture, and elevation to vocal performance, sharing every emotive detail from the artist to the listener. Paired with custom dual low and high balanced armature, Fathom offers top-to-bottom precision, detail, and resolution.

New Six-Balanced Armature Architecture

Fathom is equipped with six custom-made balanced armature drivers, each designed with a specific role in mind to enhance your listening experience. The configuration includes dual custom high-definition super tweeters for crisp, clear highs; a pair of custom mid-range drivers for accurate vocal and instrument reproduction; and dual custom BA woofers for rich, balanced bass. This setup is meticulously engineered to deliver precise sound reproduction across the entire frequency range.

Phase Harmony Engineering

At Campfire Audio, our philosophy regarding driver treatment informs a considered approach that emphasizes quality over quantity. In the arms-race to fit a higher and higher number of drivers into an earphone, we find that a results-driven technique to driver treatment produces superior results with less room for pitfalls and ever-expanding variables that can undermine product consistency.

One of the products of this approach is our Phase Harmony Engineering, that allows us to segment the frequency spectrum and assign these segments to specific drivers, and allows those drivers to apply their strengths to that area. But it doesn’t end there, using a combination of precision engineered driver housings and shell geometry, coupled with custom damping values we are able to physically shape the tuning and response of the drivers, and further, their interaction with one another. This driver-to-driver interaction is crucial to eliminating points of potential phase cancellation and creating the intangibles that don’t show on a frequency response curve; imaging, separation, resolution, and soundstage.


  • Expansive Soundstage: Immerse yourself in a live concert experience wherever you go.
  • Vivid Sound: Hear your music in rich, new vibrant tones that bring every track to life.
  • Effortless Connectivity: Plug into any device with ease and experience pure, uninterrupted sound with the 3 Time Stream Metal cables.
  • Luxury On-the-Go: Carry a touch of elegance with our handcrafted leather case, a statement of style.
  • Sonic Craftsmanship: Feel the passion for precision in every note with earphones crafted for the purest audio journey.

Fathom is complimented by two included Time Stream Cables, both a 3.5mm Stereo termination and a balanced 4.4mm terminated cable. Time Stream Cables feature eight silver-plated copper conductors in a ribbon configuration that offers superb ergonomics and low microphonics. A Dimensional Folding leather carrying case, hand-made by our good friends in Portugal, provides convenient and easy-to-use storage for your earphones and cables while on the go. A rainbow PVD carabiner offers additional functionality while referencing the understated details of the Fathoms fasteners.

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