This is what I installed...

Alpine CDA-105 HU
Alpine KTP-445 HU Power Pack
Modifry PnP DCI with SCV
Polk DB6501 speakers

I've had it in a few days and still getting use to all the controls... Love it so far... My question is... Why does it not completely mute off? The volume is lowered but you can still hear the HU.

 

That's just the way Alpine's mute is. It's not the only head unit that functions like that.

 

I thought KTP 445 wasn't compatible with the PnP harnessed DCI? That was posted in the power pack thread. You had no issues with your setup?