a) a power conditioning module having an input connection in which phase, neutral and ground wires are connected to a power mains circuit, and two or more power output connections,

b) a signal generator having a plurality of signal output terminals, and a power connection port for phase, neutral and ground wires, wherein

i) the power connection port of said signal generator is connected to the first power output connection of said power conditioning module,

c) a display unit having at least one signal input port and power input connections for phase, neutral and ground,

d) a proximal connection receptacle comprising;

i) a power receptacle, the power receptacle having respective input and outlet ports subdivided into separate phase, neutral and ground terminals, each terminal being connected in series to the corresponding terminal in the input or outlet port,

ii) at least one signal receptacle having a plurality of input junctions connected to corresponding outlet junctions, the junction connections being subdivided by plural conductive lines that include at least one signal path and a ground wire, and

e) a remote connection receptacle comprising:

i) a power receptacle, the power receptacle having respective input and outlet ports subdivided into separate phase, neutral and ground terminals, each terminal being connected in series to the corresponding terminal in the other port, and

ii) at least one signal receptacle having a plurality of input junctions connected to corresponding outlet junctions, the junction connections being subdivided by plural conductive lines that include at least one signal path and a ground wire,

f) wherein the power input port of said proximal connection receptacle is connected to another output connection of said power conditioning module,

g) the power outlet port of said proximal connection receptacle is connected to the power input port of said remote connection receptacle, and

h) wherein said display is energized via connection to the outlet ports of the remote connection receptacle,

i) the signal input and outlet junctions of said proximal connection receptacle interconnect said signal generator and said display unit via the signal input and outlet junctions of the remote connection receptacle, and

j) at least one of the proximal and remote connection receptacles provides a common ground connection between said signal generator, said display unit and said power-conditioning module,

k) whereby said display and said A/V signal generator share a common conditioned power source from said power conditioning module, and said display receives at least one of an audio or visual signal via connection to the outlet junction of the remote connection receptacle.