Master & Dynamic Enhances MH40 Headphones with Upgraded Drivers and Extended Battery Life

Master & Dynamic Enhances MH40 Headphones with Upgraded Drivers and Extended Battery Life

The headphones’ vintage, aviator-inspired design returns with a blend of aluminum, trademark grille, a coated canvas headband, and removable leather ear pads. The updated MH40 headphones cost $399, $100 more than the previous version.