A piano amplifier is a device designed to enhance the sound of an electric piano or keyboard. It takes the electrical signals produced by the instrument and boosts them, allowing the sound to be heard more clearly and loudly. These amplifiers often come with built-in speakers, making them convenient for practice sessions or performances. Many piano amplifiers feature multiple inputs, allowing musicians to connect additional instruments or microphones. They may also include effects like reverb or chorus to enrich the sound. Popular brands include Roland, Yamaha, and Korg, each offering various models tailored to different needs and preferences.