An "amplifikatör" is an electronic device that increases the power of a signal. It is commonly used in audio systems to boost sound levels, making music or speech clearer and louder. Amplifiers can be found in various devices, including stereo systems, guitar amplifiers, and home theater systems. Amplifiers work by taking a weak input signal and producing a stronger output signal without altering the original content. They are essential in many applications, such as broadcasting, telecommunications, and music production, ensuring that signals can be transmitted over long distances or played at higher volumes.