Headphones

Driver types

Dynamic

Dynamic drivers use magnetic material attached to a diaphragm that oscillates back and forth. This is the most common type of driver used in headphones.

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Electrostatic

A thin, electrostatically charged diaphram (typically a coated mylar membrane), is suspended between two perforated metal plates (electrodes). The musical signal is passed through the plates and depending upon the signal, the membrane is drawn towards one of the plates forcing air through the perforations. This continuous movement of the membrane generates the soundwave. Examples of electrostatic headphones are the Stax SR-007 Omega II, and the Sennheiser HE90 "Orpheus".

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Balanced armature

Usually used only in canalphones such as sensaphonics.

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