I believe many moons ago, in the eighties Redmond Cable Corp. made a SNES cable for KV-XBR25 and it RGB capibilities. I bought one. I don't know what happened to it. I remember all the colors being very rich and bright. I wish I still had it. I remember two rca plugs were part of the cable for the audio which were plugged into the two audio sources plugged into the audio source in video three.