Good day together. I want to amplify the sound in my Peugeot 307 ,for this I am looking for a good subwoofer, also with proper performance and with a suitable power amplifier.A mono-end stage would be enough, wouldn’t it? I only connect a subwoofer, more is not done. You can also suggest something else. Is there a capacitor necessary? I usually listen to music during the ride. Thanks in advance I thought about the JBL GT5: http://www.amazon.de/…/ref=s9_simh_gw_p23 _d3_i4?… or:http://www.amazon.de/…/ref=sr_1_1?… final stages: http://www.amazon.de/…/ref=sr_1_3?…http://www.amazon.de/…/ref=sr_1_37?…