Preamplifier

A preamplifier (preamp) is an Electronic Amplifier which precedes another amplifier to prepare an electronic Signal for further amplification or processing.

DESCRIPTION

In general, the function of a preamp is to Amplify a low level signal (possibly at high Impedance ) to Line-level .
A list of common sources would include a Pickup , Microphone , Turntable or other Transducer . Equalization and Tone Control may also be applied.

In a home gain. The power amplifier provides the higher current necessary to drive Loudspeakers .

Preamplifiers may be:

incorporated into the housing or chassis of the amplifier they feed

in a separate housing

mounted in other pieces of equipment, such as Turntable s, Microphone s and Electric Bass es.

close to the signal source, remote from the next amplifier -- eg: beside hi-fi system, then feeding into a computer in the home office.

EXAMPLES

the integrated preamplifier in a foil electret Microphone .

the first stages of an Instrument Amplifier .

a stand-alone unit for use in Live Music and Recording Studio applications.

as part of a stand-alone Channel Strip or channel strip built into an audio Mixing Desk .

a Masthead amplifier used with Television receiver Antenna or a Satellite Receiver dish.

The circuit inside of a hard drive connected to the magnetic heads or the circuit inside of CD/DVD drive which connects to the photodiodes.

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Information About

Preamplifier