Campfire Audio IO In-Ear Monitors

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  • $249.00
  • Regular price $299.00

Campfire Audio IO In-Ear Monitors

IO presents an all-new fun and engaging listening experience. IO’s sound is fast and resolving. Its refined mid-range complements extended high frequencies and articulate bass. The result is fidelity unmatched by any other in-ear monitor in its class.

Many more iterations and unique prototypes were made of IO than any other earphone in Campfire Audio’s line up to date. It was a journey to fine-tune the sound and get it right.

Based on the classic Campfire Audio profile, each earphone is assembled by hand in our workshop in Portland, Oregon by a team of highly skilled craftspeople.

Driver count has never been as especially important to Campfire Audio designs as the proper selection and implementation of particular drivers. When using more than a single driver, it is as much about the synergy between drivers as it is about any one particular driver.

Using an oversized woofer BA as a foundation and then pairing that with a small tweeter, IO came together. The Tuned Acoustic Expansion Chamber (T.A.E.C.™) provides that natural and open top-end extension people have come to expect from Campfire Audio earphones.

Building from its silver-plated copper Litz wire conductors and its popular tangle-resistant twisted cable weave, Campfire Audio has added a new stylish smoky jacket. A new light-weight molded ear-hook design replaces the memory wire. The result is a light-weight cable that is a pleasure to use every day.

The exciting new premium ‘Bordeaux’ leather protective zipper case is an update to the standard leather earphone case. Luxurious leather surrounds a substantial and protective rubber barrier that ensures your earphones will remain safe while in transit. The interior is a dense faux wool lining that preserves the anodized finish of your earphones. Each case is made in Portugal by a small team of skilled craftspeople that share Campfire Audio's commitment to quality.


  • Dual balanced armature drivers 
  • Beryllium / copper MMCX connections
  • Garnet red aluminum body
  • 24 k gold-plated screws
  • Stainless-steel spout


Frequency response: 5 Hz - 22 kHz

Sensitivity: 109 dB SPL/mW

Impedance: 26 ohm at 1 kHz

Included accessories: Leather case, cable, selection of tips, cleaning tool