I just rewired my axis tower that was pre ran with I believe 16 gauge. It was an absolute bitch to run 3 strands of 12 gauge thru it, with the 22/2 for the LEDs. But why have 1200 bucks in gear to run 16 gauge wire ? I'll have 585 watts going to each pod so I went with 12 gauge, and I also ran 12 gauge to my in boat speakers. Sure it's overkill, and didn't want it to be a problem. I'm sure you'll be just fine with 400 watts to each pod with the 16 gauge. But 12 gauge there'd be no doubt