The M-Line is our flagship—a masterpiece of acoustic engineering, handmade without compromise in Obrigheim, Germany. To ensure the absolute truth in music reproduction, every driver is individually measured against a reference sample. Featuring UltraSphere™ titanium domes, nano-ceramic coated membranes to eliminate distortion, and a cast aluminum basket that doubles as a heatsink for the encapsulated neodymium motor structure, M-Line is the definitive choice for the purist. This is more than a speaker, it's the most precise instrument we have ever built for the road. And that's saying a lot if you know our history.