Frank, you asked a question regarding the 1098 12v triggers and I answered the following. Haven't seen you around since. Did you tested it?
Regards,
Luis
"It is not what you see and hear...it is how!"
Frank, you have a solution for your current issue right now. If amps for both surrounds and back speakers (#2 and #3) always go together, then the 1070 have a trigger IN and OUT where you may piggy back a cable from the #2 to #3 and turn them on at the same time. Then for video input you activate trigger #1 and #2. The #1 will activate the amp for L/C/R and the #2 will activate the 1070 amp. for surrounds that will also trigger the 1070 amp. for the back speakers. Then the trigger #3 will be for the SACD material that will trigger the 1070 amp. for those speakers.
Regards,
Luis
"It is not what you see and hear...it is how!"