Shipping late-September 2025

Sierra Aluminum is a special edition Sierra Open Monitor commemorating the 5th year anniversary of the original Auribus project.

This is our best headphone ever, now with a warmer, more enveloping tuning paired with a premium Solid Aluminum cup and polished headband for a smoother sliding action. The advanced Metal 3D Printing and polishing process create a unique finish unlike any other headphones, all while keeping weight to a minimum.

We've come a long way since the beginning in 2019. Thank you for coming along in this journey, as we continue to work at perfecting a new class of headphones. 

Proudly Hand-Crafted in Southern California!

Reserve your spot in the first batch!