Sierra Aluminum Connectivity technology:3.5mm Termination all while keeping weight to

all while keeping weight to a minimum

Please note

Sierra Aluminum is a Luxury take on the Sierra Reference commemorating the 5th year anniversary of the original Auribus project

and compatible with all Auribus headphones

The advanced SLM Metal 3D Printing and polishing process create a unique raw finish unlike any other headphones

Sierra Aluminum Connectivity technology:3.5mm Termination all while keeping weight toSierra Aluminum is a Luxury take on the Sierra Reference commemorating the 5th year anniversary of the original Auribus project. This is our best headphone yet, now with a warmer, more refined tuning paired with a premium Solid Aluminum cup and headband. The advanced SLM Metal 3D Printing and polishing process create a unique raw finish unlike any other headphones, all while keeping weight to a minimum. Please note, a powerful amplifier is required