An electronic amplifier, amp, or amplifier is an electronic device that is capable of increasing the signal power which is a time-varying current or voltage. A two-port electronic circuit, an amplifier is known for utilizing the electric power from the supply to increase the signal’s amplification that is applied to the input terminals. At its output, it produces a proportionally greater amplitude signal. Basically it is an electronic device that boosts a weak audio signal from a source (like a phone, turntable, or microphone) to a level strong enough to power speakers or headphones. . Its primary purpose is sound reinforcement, ensuring speech, music, or announcements are clearly audible across small rooms, massive venues, or outdoor areas. musicland stocks a wide range of this important equipment and u can be sure u will find one that fits your needs