Saw this on another page and thought I'd share as I thought it might be useful for our members 🙂 I decided to make this thread in response to everyone taking such interest in BT'ing their A4. This will be B5 specific, but most of this will still apply to you b6 and b7 guys.   What are your goals? This should be the first question you ask yourself before you even think about piecing together your BT kit. Everything in your setup will depend on what kind of power you want and wh