Universal amplifier.
Input and built-in digital radio.
Digital sound control and extra bass.
You can plug that contraption to mp3, laptop or whatever, with chinch (RCA) plugs. Output power 2 x 120 Watt + 2 x 20 surround channels
Subwoofer out. Extra line out. You can boost the same signal with another amplifier ! :)

conception & completion by J.Redmer