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An integrated amplifier (pre/main amp) is an electronic device containing an audio preamplifier and power amplifier in one unit, as opposed to separating the two.[1][2] Most modern audio amplifiers are integrated and have several inputs for devices such as CD players, DVD players, and auxiliary sources.
![](https://upload.wikimedia.org/wikipedia/commons/thumb/4/47/McIntosh_MA6800.jpg/300px-McIntosh_MA6800.jpg)
Vintage integrated amplifiers commonly have dedicated inputs for phonograph, tuner, tape recorder and/or an auxiliary input. Except for the phono input, all of the inputs are line level, thus, they are interchangeable. The phono preamplifier stage provides RIAA equalization.
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edit- Queen's University ENPH333 Notes- Prof. J.L. Mason