What is the Difference Between Amplifier and Receiver?

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An amplifier and a receiver are both used to amplify audio signals, but they serve different purposes and have distinct features.

A receiver is an amplifier that has a built-in radio section. It allows you to select multiple inputs, choose the required level of gain, and adds gain to the signals to power speakers. Receivers are typically used for listening to radio and other broadcast material. Some receivers also come with features like room correction, Bluetooth, and wireless functionality.

An amplifier, on the other hand, is a standalone device that amplifies audio signals without a built-in radio section. It can be connected to various audio sources, such as CD players, turntables, or digital music streams. Amplifiers are generally used for high-fidelity audio listening, while receivers are better suited for home theater systems and surround sound setups.

In summary, the main differences between an amplifier and a receiver are:

  • A receiver has a built-in radio section, while an amplifier does not.
  • A receiver is typically used for listening to radio and other broadcast material, while an amplifier is more focused on high-fidelity audio listening.
  • Receivers often come with additional features like room correction, Bluetooth, and wireless functionality, while amplifiers focus on amplifying audio signals.

When deciding between an amplifier and a receiver, consider your specific needs and preferences. If you listen to the radio a lot or want a home theater system, a receiver might be the better choice. However, if you are more focused on high-quality audio listening, an amplifier may be more suitable.

Comparative Table: Amplifier vs Receiver

Here is a table comparing the differences between an amplifier and a receiver:

Feature Amplifier Receiver
Function Amplifies audio signals from various sources Combines preamplifier, amplifier, and radio tuner circuits in a single unit
Audio Sources Typically supports one or two audio sources, such as CD players or turntables Equipped with a built-in tuner, Bluetooth, and Wi-Fi connectivity, offering more versatility in audio input options
Customization Options Limited customization options, focused on amplifying audio signals without many built-in features Supports built-in equalizers, room calibration systems, and various sound modes for fine-tuning audio to your preferences
Input Impedance Differential amplifiers have a "virtual short" between the two op-amp inputs No specific information found, but receivers likely have more complex input impedance characteristics due to additional circuitry

Amplifiers are primarily designed for amplifying audio signals, while receivers combine preamplifier, amplifier, and radio tuner circuits in a single unit, making them more versatile and better suited for those who prioritize flexibility and additional features.