The X5i 5 driver in-ear headphone and X5h extremely fidelity on-ear headphone, the two new headphones from MAS AUDIO SCIENCE, are now available on Amazon for a price of USD 299.99. (MAS), who is an experienced manufacturer of audiophile components for the most esteemed brands around the globe is now able to combine all critical elements - durability, advanced technology, and audio quality in its own in-house designs Spec and Features Combining style, elite build quality and t