I am not related to Boss Seb from Maxhaust , but i know many SGMERC bro went to install "speakers" with him. from small engine CLA 180 (MBUX) to A35
so far, no complains / horror story.
do call Seb 82332281 - quote Rick (SGMERC) - confirm best service
disclaimer (i do not get any commission or cut)
MOST IMPORTANT THING TO REMEMBER - SWITCH OFF YOUR SPEAKERS WHEN YOU ARE AT LTA