Yes very easy to remove you just need 2 vw/Audi removal keys on a concert unit and 4 on a symphony unit. You can get the keys from ebay. You would know if you had Bose as the speaker grills have the Bose logo, and there will be a Bose amp in the boot. The Audi head unit is capable of driving front & rear speakers, but you may find the head unit is only driving the front speakers with a small amp in the boot driving the rears.