Early adopters of XM satellite radio are pleased with their XM purchase, rating the technology as “easy to use” with “excellent” sound quality, according to a study by Crutchfield Corporation, an XM equipment and electronics retailer.

Crutchfield says that early adopters of XM satellite radio are predominately tech-savvy affluent men. Crutchfield XM buyers are predominately male (90%), affluent, and between 25 and 54 years old.

Survey respondents reported positive views of XM: 78% reported the sound quality was “excellent,” and 59% reported using XM was “very easy.”

Respondents reported frequent consumer electronics purchases over the last six months: 40% report buying at least one computer, 34% bought a digital camera, and 33% bought a DVD player.

XM channels originate from XM’s broadcast centre in Washington and are transmitted across the US via two satellites. It was launched in September of last year. Each satellite – dubbed Rock and Roll — hovers 22,000 miles over the East and West coast beaming digital signals to special receivers below, providing coast-to-coast coverage.

For a flat rate subscription fee of $9.99, drivers can tune into XM’s channels including USA Today, BBC World Service, PBS‘ News Hour with Jim Lehrer, Bloomberg News radio, NASCAR, CNN News, CNN/Sports Illustrated, Radio One, Asia One, Salem Communications and The Weather Channel. Many of the channels are commercial free.

Early indications are that demand for XM services and equipment has been strong.