There's also the indoor dimension of your automobile to think about. You might want to take into consideration a 5-channel amplifier that can power your entire system from one hassle-free and portable bundle. It's four channels for your audio speakers, plus a 5th, higher-powered network for your subwoofer. 6- as well as 8-channel amps take that all-in-one style and also include even more system-building adaptability.