I'm powering the computer and touchscreen with the Carnetix P2140 which has a DYLON output wire (blue). The JBL MS-8 amplifier will be powering the rear speakers but will also be used to adjust all of the other speakers. A JL Audio 500/1 amp will power the subwoofer (JL 10W7) and a Focal amp will drive the front mid-bass and tweeters (Hertz MLK 165).
I wondering how to integrate all of the remote turn-ons. Should the blue wire from the Carnetix power supply feed a relay which in turn feeds the other 3 amps ? or should it be done a different way ?