I have an Alpine 7894 and have had it for the past two years almost. I love the headunit and would like to keep it. I recently purcahsed an Ipod and I'd look to hook it up in my car. Since the 7894 isn't one of the newest Alpine models I don't think that I have the Ai-Net feature. What do I need in order to hook it up and still maintain good sound? I've heard good things about products like the Dension Ice-Link which works with the stock headunit but I think I'm going to lose my good sound if I go that route because it improved a great deal once I got the Alpine HU.