Sorry, I didn't provide much detail there.

That is a 4-channel amp that can bridge to three channels, with 50 x 2 for the front and 180 x 1 for the sub. It would run the entire speaker complement. If your dealer tries to run any rear door speakers off of the head unit amp, resist.

If you have the AVIC-D1, consider popping for the Zapco Symbilink Transmitter up front. Your deck lacks the stronger "4V" preamp outputs and I suspect that in the X5 you would benefit from a stronger, balanced signal run.

__________________
musicar northwest, portland oregon

musicarnw.com

The West Coast BMW audio experts