One input to six output stereo distribution amplifiers. They can be configured for stereo or mono applications with the flip of a switch. The units feature incorporate a unity/boost setting that can effectively compensate for varying input signal levels handling a variety of audio sources. Accepting balanced or unbalanced inputs and outputs. A unique feature of the SADA-4/6 is the four configurations available input output arrangement can be configured for: 1X6 stereo, 2- 1X6 mono's, a 1X12 mono or a 1 stereo into 12 mono audio distribution. Both models include a power supply. There is an optional mounting bracket for a 19-inch rack and will allow the mounting of one or two units.