Hey all, I am new to the forum, my brother has an '06 A4 and turned me onto Audi's; I just ordered an '07 A3. I have always put after market systems in my cars (I love bass). I haven't seen any discussion about any audio upgrades other than factory, I would love the details if anyone has. I am planning on keeping the factory speakers and adding a 1000 watt 5 channel amp (4 for the doors speakers and 1 for a 10 inch Infinity sub), and a Kenwood KVT-617DVD in-dash DVD player with KNA-G510 navigation system.