The move to a separate power amp was a nice upgrade for me back when I had my 1050. I was just moving to nicer cables at the time, but I think even with the original PCA's (the larger barrels) I was able to get them on the back of the 1050. It was a snug fit, but it worked - and they gave the PCA barrels a diet a few years ago, which helps.

Before you run by Radio Shack, check with Outlaw because the 7125 may come with one - my 750 didn't come with a trigger cable and the monoblocks don't have them (because of their auto-on sensing ability), but I think around the time they released the Model 770 in 2002 they started including trigger cables with their multichannel amps.