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Campfire Audio

Campfire Audio IO In-Ear-Monitors

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Our Take

IO is an exciting and exceptionally expressive earphone. The sonic performance stands with our best work to date. It has an excellent vocal presence. There is a splashy energy to its musical delivery that I think many people will really enjoy.

Ken Ball, Designer

The Story

Remarkable. Refined.

IO (Eye-Oh) presents an all new fun and engaging listening experience. IO’s sound is fast and resolving. It’s 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. The result is an earphone that we can proudly stand next our best-known models. We feel confident you will enjoy the result of this effort.

Refresh!

Based on our classic Campfire Audio profile, Io features a ‘Garnet’ Red Anodized Finish with 24K Gold Plated Screws. Stainless Steel Spout and Machined Aluminum Body are paired with a custom beryllium / copper insulated round MMCX connector.

Insides that Count

Driver count has never been as especially important to our 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. Staying true to the Campfire Audio design philosophy “Less is More” and using fewer, higher quality components is ideal to achieve a more a musical presentation. Using an oversized woofer BA as a foundation and then pairing that with a small tweeter, IO came together. Our 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.

New Cable + New Case

Building from our Silver Plated Copper Litz wire conductors and our popular tangle-resistant twisted cable weave, we’ve added a new stylish Smoky jacket to compliment the unique finish of our new line of earphones. 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 everyday.

Our exciting new premium ‘Bordeaux’ leather protective zipper case is an update to our standard leather earphone case. Luxurious leather surrounds a substantial and protective rubber barrier that ensures that 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 crafts people that share our commitment to quality.

The Craftsmanship

Designed and Assembled in Portland, Oregon USA

Each unit is assembled by hand in our workshop by our small team of highly skilled craftspeople. From driver to body each component part is carefully examined and tested. After each unit is built, it is placed into a pairing pool, where it finds its ideal sonic match.

Premium Custom Connectors

Our custom Beryllium Copper MMCX eliminates the traditional shortcomings of the connection and harnesses all of its benefits. Beryllium Copper provides 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.

What's Included

• Premium Campfire Audio Leather Earphone Case. Made in Portugal.

• Campfire Audio Litz Cable – Silver Plated Copper Conductors with Beryllium Copper MMCX and 3.5mm Stereo Plug

• Final Audio Tips (xs/s/m/l/xl)

• Campfire Audio Earphone Tips(s/m/l)

• Silicon Earphone Tips (s/m/l)

• Campfire Audio Lapel Pin

• Cleaning Tool

The Specs

Drivers

• Dual Balanced Armature Driver Design

Enclosure

• Beryllium / Copper MMCX Connections

• ‘Garnet’ Red Anodized Aluminum Body

• 24K Gold Plated Screws

• Stainless Steel Spout

Frequency Response
5 Hz to 22 KHz

Distortion
Less than 1% THD

Sensitivity
109 dB/mW

Impedance
26 ohms @ 1 KHz

Campfire Audio IO

Designed and hand assembled in Portland, Oregon USA.

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About Campfire Audio

Campfire Audio has focused on building high end in-ear monitors and headphones since 2015. Campfire was created in Oregon by Ken Ball, the audio expert behind ALO Audio. Campfire builds their products to feature in-house developed technologies like Tuned Acoustic Expansion Chamber (T.A.E.C.), Beryllium Copper MMCX connections, and CeraKote™. Campfire products are designed for durability, fidelity, and fun!