Thirty years after revolutionizing portable music with the Walkman for playing cassette tapes, Sony is trying to master the digital media player with the X Series Walkman. Tunes sound great, and videos look crisp on the device, but Sony still has a lot of work to do to catch up with Apple’s market-ruling iPod. While the X Series brims with features like WiFi and noise cancellation, the limitations and execution problems make it somewhat disappointing overall. The X Series is sleek and elegant-looking.
