PS audio PerfectWave digital to analog converter.

• Position: ELECTRIC MACHINERY, SOUND EQUIPMENT AND TV PARTS

Boulder

psaudio.com

Paul McGowan launched PS Audio from a California garage in 1973-wait, strike that. "I don't even think we had a garage" he says, laughing. Starting with a phonograph preamplifier, PS Audio quickly emerged as a top brand in high-end audio.

After McGowan moved the company to Colorado in the 1990s, PS Audio started building the Power Plant, which converts AC current to DC and back again to remove any irregularities that might impact your stereo's sound. In 2000, McGowan and company moved into high-end digital-to-analog converters, which now comprise the backbone of the company's PerfectWave system.

"It's one of the few in the world with a wireless component," McGowan says. PS Audio moved production to China in the early 2000s...