Help with which line out Audio Control I need - DIYMA Car Audio ...

I just bought a brand new Jeep Wrangler Unlimited 4-door. It has the stock HU, no amp and no sub. I want to keep the stock HU, add the Alpine PDX-5 5 channel amp to run 2 fronts, 2 rears, and a sub. My stock HU has no rca outputs so I was planning on hooking up an audio control line out converter. either the LC2i or the LC6i but the guys at audio control are giving me mixed messages as to what i need. Do i need to run 2 separate RCA's into the PDX-5 5 channel amp or can i do just 1 line out from the stock HU, convert it to an RCA, plug that 1 rca into the 5-channel, then run all 5 channels out of the amp. the debate is whether i need to input 1 rca into the amp or 2 to utilize all 5 channels out?

this probably sounds like a silly question but thanks for the help.

Source: http://www.diymobileaudio.com/forum/system-design-help-me-choose-equipment-my-car/139167-help-line-out-audio-control-i-need.html

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