#audio system
- Amplifier — An apparatus, electronic device, or technical assembly that increases the power, voltage, or intensity of an electrical, acoustic, or light signal received at the input, utilizing energy from an external source; as an adjective, it describes any element or factor that boosts or intensifies an effect, a state, or a physical or social phenomenon.
- Amplifier — A neologistic term adopted from international technical terminology (English / French) used to designate an electronic amplifier, a power station, or an electroacoustic device intended for increasing the amplitude of sound or electrical signals. In current musical jargon and the high-fidelity (Hi-Fi) audio equipment industry, the word is frequently used as such to specify amplification modules dedicated to guitars or professional sound systems.