I never collected baseball cards, played Cops & Robbers, or was a Boy Scout. From the moment I heard the opening guitar riff of Blondie's "One Way or Another," at age 6, it was clear that music would be central to everything I was going to do. It was my first important big thing, and my last.

If you're reasonably handy, you can probably build your own digital-to-analog converter. It won't cost much, and if you're careful, and knowledgeable enough to understand and follow some rather technical instructions, or if you have patience enough to follow advice from a few different online discussion forums—and the judgment to distinguish the good advice from the bad—then the DAC you make may end up sounding very good.