I have a 2010 Prius III with the JBL navigation/sound package. My amplifier has died so I need to get a new one. I dont really want to go to a lot of effort to upgrade everything, I just want the most simple and cost effective amp. Any recommendations? Cruchfield said I should get: Apline KTP-445U Power Pack
If you don't want to "go to a lot of effort to upgrade everything" and want the "most simple and cost effective" solution, then why not just get a factory JBL amp and replace your dead one? There are plenty of nearly new amps taken out by owners who want to upgrade to an aftermarket amp.
You might want to post an wanted ad in the classifieds here before buying on eBay. I just had a look at the eBay prices, and I think they are a little high to be honest.