Keyboard amplifiers differ from guitar amps by providing a flat, full-range response to accurately reproduce keyboard sounds. Early keyboardists relied on PA systems, but dedicated keyboard amps became standard for live performance. Leading brands include Roland (KC Series), Peavey (KB Series), Behringer (KXD Series), and Motion Sound (Pro Series). These amps support multiple inputs, allowing musicians to connect multiple keyboards or backing tracks. Ideal for gigging musicians, keyboard amps ensure clarity and power on stage, particularly for bands without a dedicated PA system.