Abstract: The invention relates to a component 1 for a hi-fi system. This component has plug connection contacts P.sub.1 to P.sub.4, the plug connection contact P.sub.1 being arranged on the top 10, the plug connection contact P.sub.2 on the right-hand side 11, the plug connection contact P.sub.3 on the bottom 12, and the plug connection contact P.sub.4 on the left-hand side 13. These plug connection contacts are connected, on the inside, with each other and at least with the LF-signal source of the component. Wiring is no longer necessary, since the individual components can be connected with each other via the plug connection contacts both in the event that they are arranged alongside of each other and in the event that they are arranged one above the other.