BMW Pioneer 4 Channel Compact 400 Watts Car Amplifier Upgrade Kit
Pioneer GM-DX104 4 Channel Class D Bridgeable Car Amplifier 400W. BMW 3 Series 2000 - 2004 (E46/5) Compact. BMW 1 Series 2004 - 2010 (E81/E82/E87/E88). BMW 1 Series 2011 - 2019 (F20/F21). BMW 3 Series 1999 - 2006 E46.