• Free 1 or 2 Day shipping for most US orders >$299


Astell&Kern Solaris X

Authorized Retailer

Free 1 or 2 Day

60-Day Returns

Ships in USA

Our Take

AK SOLARIS X is a culmination of Campfire Audio's technology specially tuned for Astell&Kern. Its hybrid system, which integrates a balanced BA driver and an optimized dynamic driver, faithfully conveys A&K's deep and rich sound.

The Story

AK SOLARIS X Beyond the Original

SOLARIS, Campfire Audio's high-end earphones that are highly acclaimed by audiophiles around the globe, are now reborn in collaboration with Astell&Kern.

The custom BA driver designed specifically for the AK SOLARIS X is smaller in size than its predecessor used in existing models, and offers wideband performance. Coupled with Campfire’s patented tuned acoustic expansion chamber (T.A.E.C.) technology, the new driver also offers smooth and extended high frequencies. Another BA driver provides rich delivery of the mid-range frequencies, and the custom 10mm dynamic driver optimized for the Polarity Tuned Chamber reproduces deeper and more refined mid-to-low frequency. Each earphone integrates a 3D Printed Acoustic Chamber to enable the drivers to deliver the highest audio quality possible, creating a natural and accurate sound.

4N Pure Silver Litz Cable

AK SOLARIS X comes with a balanced 2.5mm pure silver cable allowing the earphones to reach their full performance potential. Pure Silver Litz Cable is produced with four 4N (99.99% purity) conductors to offer clearer, extended sounds. The jacket that wraps around each conductor ensures both flexibility and durability. At the same time, it is soft to touch and a practical to use every day.

The cable is terminated with a custom beryllium/copper MMCX connectors and over-molded balanced 2.5mm plug. This cable brings out the best in AK Solaris X.

Featured Technologies


Tuned Acoustic Expansion Chamber

Our tuned acoustic expansion chamber technology allows us to deliver extended high frequencies without sibilance or fatigue. We optimize our driver performance by adjusting the volume of space available in front of the driver. This is superior to the typical "Tube+Dampener" system because it provides a direct passage from the driver to your ear, which results in unsurpassed clarity and extension.

Polarity Tuned Chamber

3D Printed Acoustic Tuning for Dynamic Drivers

The Polarity Tuned Chamber allows us to optimize the sonic performance of our dynamic drivers. Deploying particular volume cavities, both in front of and behind our dynamic driver, we can pull bigger sounds from smaller drivers. This also gives us the ability, in the case of hybrid designs, to specifically target the driver performance.

3D Printed Interior

Carefully Designed for Optimum Sonic Performance!

Close attention to detail is critical to delivering you the superior musical experience from our earphones. Solaris X features an acoustically optimized interior model that allows each driver to deliver the very best sound quality. When heard together, the drivers offer a seamless musical experience as a result of this process.

Handcrafted in the USA with Positive Global Impact

AK SOLARIS X is hand-assembled in Portland, Oregon, USA by skilled craftsmen, ensuring each individual earphone is manufactured to the highest quality standards with beryllium/copper MMCX connectors that are more resilient against wear and tear than regular brass connectors.

The cork case is handmade with eco-friendly materials for long-lasting durability while maintaining its original shape. The owner of the company wanted to create a place where people with disabilities can have a job and gain the power to stand on their own. To achieve this goal, he is working side-by-side with people who are physically disabled in a small boutique shop that he founded in Portugal..

What's Included

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

• 4N Pure Silver Litz Cable with Berylium Copper MMCX and balanced 2.5mm Stereo Plug

• Earphone Tips (xs/s/m/l/xl)

• Campfire Audio Earphone Tips(s/m/l)

• Silicon Earphone Tips (s/m/l)

• Campfire Audio Lapel Pin and A&K Cloth Bag

• Cleaning Tool

The Specs


• Specially Customed New Single BA Driver + T.E.A.C (High)

• Single Updated Custom Balanced Armature Driver (Mid)

• Specially Tuned 10mm Dynamic Driver (Mid + Low)


• Beryllium / Copper MMCX Connections

• 3D Printed Solid Body Acoustic Chambers

• Stainless Steel Spout

Frequency Response
5 Hz to 20 KHz

Less than 1% THD

94dB @ 1kHz: 9.16mVrms

8.1ohms @ 1 KHz

A&K / Campfire Audio Solaris X

Check out A&K's website for more information!


About Astell&Kern

Astell&Kern is the group responsible for some of the world's best portable music players. The latest models include a full slate of features such as Bluetooth and Wi-Fi playback with Spotify, Tidal, and Qobuz.