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Definition: integrated amplifier
A combination preamp/amplifier, typically for two-channel stereo. The preamp provides the input switching and phonograph equalization, and the amplifier boosts the signals to the speakers. Integrated amplifiers are widely used to listen to music by audiophiles, although they may opt for a separate preamp and amp. Every self-contained music system with CD player and speakers, no matter how large or small, also has an integrated amp built in. See preamp and music system.
High-End Hybrid Integrated Amp
The McIntosh MA252 uses a vacuum tube preamp and solid state power amp to deliver 100 watts into two speaker channels and subwoofer. Amplifiers like these are used to listen to music and are teamed up with quality speakers, CD player and turntable. (Image courtesy of McIntosh Laboratory, Inc.)