Here are some of the headphone options available to improve the listening experience of portable music players.
Etymotic Research's 6i Isolator Earphones offer a sound-isolating option for $150. These include enhanced bass and can reduce outside sounds by an estimated 35 decibels, according to the company. Two types of tips are provided, including a foamlike material you squeeze before putting them in your ears, and they slowly expand to form a seal.
Bill Detwiler has nothing to disclose. He doesn't hold investments in the technology companies he covers.
Bill Detwiler is Editor in Chief of TechRepublic and the host of Cracking Open, CNET and TechRepublic's popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop support specialist in the social research and energy industries. He has bachelor's and master's degrees from the University of Louisville, where he has also lectured on computer crime and crime prevention.