For grins and giggles Ive been looking at a power amp to run my 2 extra cabs at the same time as my tnt tour .Going to run the xlr output from my tnt tour to the xlr input of the power amp. The question I have is the xlr input feeds thru to the trs of the same channel can that trs now send a signal to say another power amp of same brand or any brand?Was wondering in the very unlikely event I'd ever have the need to hook another power amp and cabs up. This is from the manual of the power amp.Ive underlined the sentence that intrigued me.I know zip about power amps by the way, in case you guys haven't figure that out already. . "Pin 2 Positive, Pin 3 Negative, Pin 1 Shield (Ground). Recommended for long or short runs, either fixed or frequently changed. Each channel’s XLR and TRS jacks are connected internally, and provide feed thru to the other connector."