Information AboutPreamplifier |
| CATEGORIES ABOUT PREAMPLIFIER | |
| electronic amplifiers | |
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A preamplifier (preamp) is an Amplifier which precedes another amplifier to prepare an electronic Signal for further amplification or processing. DESCRIPTION In general, the job of a preamp is to Amplify a low level, possibly high Impedance , signal from a Microphone or Pickup or other Transducer to Line Level . Equalization and Tone Control may also be applied. In a home Audio System , the term 'preamplifier' may sometimes be used to describe equipment which merely Switch es between different Line Level sources and applies a Volume Control ( Attenuation ), so that no actual amplification may be involved. In an audio system the second amplifier is typically a Power Amplifier (power amp). The preamplifier provides Voltage gain but no significant Current . The power amplifier provides the high current necessary to drive Loudspeakers . Preamplifiers may be:
EXAMPLES
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