The stereo amplifier and receiver are two devices that are often part of the home stereo system. The most basic stereo systems rely upon a receiver, while component systems include an amplifier and preamplifier. The receiver is actually part amplifier and simply houses the electronics in a single box rather than separate components.
Amplifier
A stereo amplifier is designed to take a line level audio signal produced by audio source components like CD players and increase the power of the signal while maintaining the frequency. The more powerful signal produced by the amplifier is able to drive the speakers and produce sound, something a line level signal cannot do.
Receiver
A receiver is a stereo component that combines an amplifier, preamplifier and radio tuner. It is a less expensive means of purchasing all the main components needed in a stereo system.
Amp Pros and Cons
Purchasing a separate preamplifier and amplifier is generally considered to provide the best performance and sound. Separate components also offer more flexibility in repairing and upgrading specific aspects of the stereo. However, purchasing separate components is also more expensive and requires additional space.
Receiver Pros and Cons
Designing a stereo system around a receiver is a less expensive option and makes it easier to get set up. However, if one part of the receiver breaks, it's necessary to repair the entire unit. The sound may not be as high quality as would be experienced with components.
Considerations
It is possible to integrate an amplifier and receiver together. The receiver can serve as a preamplifier and send line level audio to the amplifier for amplification. Connection can be performed with a series of RCA cables.
Tags: line level, stereo system, amplifier preamplifier, amplifier receiver, components also
