A driver is an electronic component used to control another electronic component, such as a high power transistor. In mobile audio, a line driver is a small amplifier used to bolster the strength of the audio signal coming from the source unit. The newly strengthened signal is then fed to its appropriate amplifier. By using a line driver, the amplifier's gain need not be set so high, thereby enabling amplification of the audio signal with less of the noise.
A device driver is a specific type of computer software, typically developed to allow interaction with hardware devices.
Power-down high impedance inputs and outputs
Low power consumption
Wide frequency range