I'm big on sound quality. I needed to have the best possible sound quality for my SiriusXM unit. So I purchased this Grom Audio kit so I could plug it directly into my OE head unit.
So basically it gives you a 3.5mm headphone or USB input to spice up your sound options with the factory head unit.
I just upgraded the head unit in my 2010 DX (RT) so I would have Bluetooth. So this is now for sale.