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Campfire Audio’s Axion IEMs: Affordable USB-C Earphones for iPhone & Android

Offering premium sound quality, USB-C connectivity with a DAC, and seamless integration with iPhones and Android smartphones, the Axion IEMs are Campfire Audio’s most affordable earphones yet.

Campfire Audio Axion IEM Connected USB-C with Controller

Campfire Audio is a boutique audio brand based in Portland, Oregon, renowned for its handcrafted in-ear monitors (IEMs) that blend striking industrial design with high-end acoustic performance. Founded by Ken Ball, Campfire has earned a loyal following among audiophiles and musicians alike by pushing the boundaries of portable audio innovation.

Their products are meticulously engineered and assembled in-house, often incorporating custom drivers, premium materials, and unique tuning philosophies that emphasize clarity, detail, and musicality. Whether you’re a critical listener or a casual music lover, Campfire Audio offers a distinct listening experience that’s anything but ordinary. We’ve covered Campfire Audio with some regularity over the past five years and members of the team use their Holocene and Andromeda IEMs on a regular basis. There’s only one issue — they’re really freaking expensive.

Affordable & Wired for Apple and Android

Campfire Audio Axion IEM Connected USB-C
Campfire Audio Axion are wired earphones that connect via USB-C.

This week, Campfire Audio has shifted gears with the release of what it’s calling its “most accessible pair of earphones yet.” These new models are the brand’s most affordable to date (about time), and they’re specifically designed to provide a seamless listening experience with both iPhones and Android smartphones.

The Campfire Audio Axion are wired in-ear monitors (IEMs) designed for modern smartphones and devices, offering high-fidelity audio through a USB-C connection. Priced at $249, they are Campfire Audio’s most accessible earphones to date. 

Campfire Audio Axion Silicon Dynamic Driver

Key Features:

  • USB-C Connectivity with Built-in DAC: The Axion connects directly to devices via USB-C, featuring an integrated digital-to-analog converter (DAC) that supports up to 32-bit/384kHz audio, delivering high-resolution sound without the need for external adapters. ​
  • Innovative Driver Technology: Equipped with Campfire Audio’s new full-range silicon dynamic driver, the Axion provides a cohesive and rich audio experience in a compact form factor.
  • Ergonomic Design with Inline Controls: Designed for everyday use, the Axion features a straight-down wear style for universal comfort and includes an inline microphone with three-button controls for easy management of music playback and calls.
Campfire Audio Axion IEM wire coil

Tech Specs:

  • Impedance–  15.3Ω
  • Frequency Response– 5-20 kHz
  • Sensitivity – 124.1 mVrms
  • THD less than 2%

What’s in the Box?

  • Axion premium SDD earphones
  • USB-C Cable with DAC and microphone
  • Breezy Bag Jr. mesh zipper carrying case
  • Breezy Bag Micro two-pocket mesh bag
  • Foam Eartips Small, medium, large
  • Silicone Eartips Small, medium, large
  • IEM Cleaning Tool

The Bottom Line

The Campfire Audio Axion IEMs offer a compelling blend of accessibility, premium sound quality, and modern convenience. Priced at $249, they are the brand’s most affordable earphones, making high-fidelity audio more accessible to a broader audience. With USB-C connectivity and an integrated DAC, the Axion provides high-resolution audio without the need for additional adapters, delivering clear, detailed sound directly from your smartphone or device.

Price & Availability

Campfire Audio’s Axion in-ear headphones are now available for $249 at Campfire Audio.

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2 Comments

2 Comments

  1. Anton the Merciless

    April 8, 2025 at 6:57 pm

    $249 feels very reasonable for that considering it includes a DAC.

    Will have to read your other reviews on the brand now.

    Do you guys ever sleep? That’s like the 20th article since Friday.

    • Ian White

      April 8, 2025 at 7:15 pm

      I actually purchased a pair of the Holocene and still use them. Excellent IEMs. Need a warmer sounding Dongle. The Axion could be a really good value if the IEMs are good.

      IW

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