Just want to start by saying this is a great forum and is an excellent resource for X owners.

Here is the link:

BMW OEM E70 AMP AMPLIFIER AMPH70 HIFI VERST HI FI LEAR X5 2007-2012 65129118032 | eBay

Is this plug and play with a 2009 X5 with base sound system? Also, will this improve the sound in any way?

I will not replace factory speakers with anything aftermarket (maybe BSW Stage 1 down the road) and I will not be adding an aftermarket amp to these speakers.

Just curious what benefit this might have since it's a factory HiFi amp.

Thanks in advance for any input.