We know many audioXpress readers are going to be following Brewster LaMacchia's series of articles about Getting Started with Automotive Audio Bus A2B (not just for automotive). In Part 2 of this series, LaMacchia writes about "Understanding A2B Features," and he examines how certain optimizations for the automotive applications must be accounted for when targeting broader audio applications. He also includes a look at analog phantom power and how A2B provides that feature in a digital system.