Before revision: Audio stereo power amplifier made by Unitra The internal view of a Mission Cyrus 1 Hi Fi integrated audio amplifier (1984) Cyrus Audio: Product Archive: Cyrus One An audio power amplifier (or power amp) is an electronic amplifier that amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.
After revision: Audio stereo power amplifier made by Unitra The internal view of a Mission Cyrus 1 Hi Fi integrated audio amplifier (1984) Cyrus Audio: Product Archive: Cyrus One An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.