To use the 12 volt trigger on the RSX-1055 or RSX-1065 requires a 3.5mm Mono to Mono cable, which is not included with the unit but can be purchased from any local electronics supply store, such as Radio Shack.  The 12V trigger current output of the RSX 1055 is enough to trigger one 200mA device, or two lower current devices such as other Rotel components.  Some other manufacturer’s components do require more current than this to use their triggers, however.  In such cases, using a Xantech AC-1 12V Trigger to switched AC outlet may be useful. If the 12V triggers turn on the components but do not turn off, this often means the second zone is activated.  If either zone is active, the 12V triggers will remain on.