Perfect sound, perfectly engineered for your exact BMW. Our Soundstage DSP™ Ultra is the ultimate audio experience - a complete, true 4-way plug-n-play replacement audio system acoustically tailored to your BMW.
The Integral Audio Phantom™ Subwoofer includes the enclosure, subwoofer, and all mounting hardware! It installs in the trunk and offers a clean, professional, stealth installation. Amplifier and wiring not included.