I have tested a number of wiring cables to connect Real Sound Processors from SPEC Corporation (RSP-AZ9EX & RSP-W1EX) to my loudpeakers. Noetech SOCT-12 OCC provided very good sound. Kimber Kable Hyper Pure VariStrand silver 20AWG provided a clearer and more open sound I twisted three wires for each conductor (1,5 mm2). Finally Neotech CU-AG-20-20 OCC 20AWG provided the sound I was aiming for. I twisted three wires for each conductor (1,5 mm2). This provided a super clean sound with excellent portrayal of inner resolution and details within an impressive soundstage. Everything from bass to treble became more natural and organic. This is my favorite wiring cable of all time so far. I give this OCC cable my highest recommendation for all who are aiming to achieve gret musical sound quality and organic realism.