Preamplification
Preamplification selects a source and controls its level before power amplification. Its output is a line-level audio signal for another amplifier, not power for passive loudspeakers.
You find this function in separate preamplifiers, integrated amplifiers and receivers. Passive speakers still need a power amplifier. Active speakers with suitable line inputs can accept a preamp output because they contain power amplifiers. Phono amplification is a separate function for a turntable’s cartridge; having a phono stage does not automatically provide line-level input selection and volume control.
Reading the specs
Gain describes how much the signal level changes from input to output. Maximum output level tells you how much voltage the preamp can deliver under the stated conditions. Compare that voltage with the power amplifier’s input sensitivity: the input level needed for its stated output. Compare preamps using the same connection type and stated load and distortion conditions; RCA and XLR ratings may differ.
Product categories with this capability
- Preamplifiers
- Reference pageIn preparation
- Integrated amplifiers
Specifications
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Some capability explanations are in preparation.
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Some capability explanations are in preparation.
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Some capability explanations are in preparation.
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Some capability explanations are in preparation.
Sources
- LA4 Line Amplifier — Benchmark Media Systems
- C 3050 Stereophonic Amplifier — NAD Electronics
- R-N2000A User Guide — Yamaha
- G Three, G Four, G Five Operating Manual — Genelec
- Hi-Fi Preamplifiers — Benchmark Media Systems
- The Audio Path in Consumer-Grade Audio Products — Benchmark Media Systems