High performance, high design, and a high-pitched soundtrack to summon the angels. That could be a Ferrari, a Bang & Olufsen speaker system, or both. Which is to say the Bang & Olufsen Ferrari Collection of ear buds, headphones, portable speakers, and centerpiece home audio equipment. Designed in Denmark and Maranello with extensive use of anodized aluminum and all of it in a shade of near-Rosso Corsa, none of this comes cheap. But the best rarely does.