XtremeMac today debuted its FS.1 High Definition Earphones, which the company says introduces a new generation of professional audio technology to the iPod consumer. “While other earphones continue to use armature-type drivers-the same kind found in hearing aids-the FS.1 earphones utilize proprietary drivers and technologies recently developed by Future Sonics. These drivers produce a natural tone and rich, deep bass-even at the lowest volume levels,” the company says. The new earphones are expected to be available November 1 for US$145.95.