You need the Match UP 7DSP with MEC analog in module and PP RAM harness. I have this setup currently, with Audison APBMW speakers in the front and rear doors and Earthquake SWS-8Xi 2ohm under seat woofers. Haven’t replaced the center channel yet due to Audison only selling the speakers in pairs.
The Match amps are superior to the Bimmertech and Bavsounds due to the amount of extra power it sends to the under seat subs. All of them are made by Audiotech Fischer but the Match versions send more than double the amount of power to the under seat speakers.
If you want more details, feel free to send PM!
