Audio Note AN-E Ltd

The AN-E Ltd. Field Coil design represents years of research and development.

Field coil drive units, or in laymen’s terms, powered drive units, using an electromagnet to generate the magnetic field with which the voice coil interacts (by Lorentz Force), date from the earliest days of electrical music reproduction. At the time, not long after the turn of the 20th century, permanent magnet technology was not sufficiently advanced to make a conveniently sized, and priced, speaker drive unit.