The light bulb was a symbol of belief of the advance of technology at the turn of the century (1900). Also, the light bulb is just simply a symbol for light, spirit, and idea. In the work "Amplifier" a light bulb is used as a feedback media. The usual displays, like monitors or colorful flashing displays are reduced to a bulb, which turns on and off at one pixel, becoming lighter and darker. This reduction is effected with regard to the input media. The keyboard of the Play Station becomes the real attraction, because of its tangible and sculptural qualities.