Alpine KTP445 Head Unit Power Pack
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Video Source: www.youtube.com/watch?v=SBoRTS3FAHM
For 2005 and newer Alpine head units: The KTP-445 amplifies the head unit power output, resulting in a 150 percent power increase over the original power from the head units built-in amplifier. ( http://www.alpine-usa.com/product/vie... )
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