Description
Campfire Fathom
Precision, Detail, Resolution.
Fathom by Campfire Audio is an earphone made for music lovers and 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.
Fathom is encased in a machined aluminum body anodized in a sleek, black, bright-dip. The Rainbow PVD fasteners cast a vibrant spectrum of light against the deep black of the anodized shell, creating a striking contrast that is both visually captivating and elegantly understated.
Meticulously designed and assembled in Portland, Oregon, USA.

Overview
Fathom
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.
The goal of Fathom’s design is to provide a sound that is true to the original recording, allowing you to hear your music with clarity and depth. By focusing on the accuracy and detail of each note, from the lowest bass to the highest treble, we aim to bring you closer to the music you love. This approach ensures a listening experience that is both immersive and authentic, suitable for a wide variety of musical genres.
This precision and detail oriented sonic approach is mirrored externally by Fathom’s sleek, ergonomic machined aluminum housing. A re-engineering of our classic faceted aluminum housing, this shell offers incredible ergonomics, resilience, and style. Fathom’s sleek, black bright-dip anodizing is contrasted with its rainbow PVD fastener rings and MMCX capture, giving it a touch of bold excitement.
Dive into the depths of Fathom’s incredible balance, soundstage, resolution, and detail.
New Six-Balanced Armature Architecture
Segmenting the Frequency Spectrum
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
Campfire's Approach
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.
Enhanced Accessories
Cables, Case, and Carabiner
Fathom is complemented 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.
- 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 two included Time Stream 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: Premium earphone crafted with care by Campfire Audio
- Time Stream Cables: Eight silver plated copper conductors in ribbon configuration, includes both 3.5mm and 4.4mm balanced terminations
- Premium Carrying Case: Our handmade Leather 'Dimensional Folding' IEM Wallet Case in Black
- Breezy Bag Junior: Small mesh zipper cable case
- Breezy Bag Micro: Two-pocket IEM pouch
- Earphone Tips: Marshmallow and Silicon - Various Sizes
- 2 Year Limited Warranty, administered by Bay Bloor Radio and Campfire Audio
- Frequency Response: 5Hz–20 kHz
- SPL: 94 dB @ 1 kHz: 6.75 mVrms
- Impedance: 11.7 Ohms @ 1 kHz
- Less than 1% Total Harmonic Distortion
- Six Balanced Armature Drivers:
- Dual custom high-definition super tweeters for crisp, clear highs
- Dual custom mid-range drivers for accurate vocal and instrument reproduction
- Dual custom BA woofers for rich, balanced bass
- Machined aluminum with black bright-dipped anodized finish
- Rainbow PVD stainless steel fasteners and MMCX capture
Specs
Dimensions
About Campfire Audio

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