brand names do matter. The fuse on the back can tell you a lot about what the amp will really put out to what it says it puts out. Some companies can say the amp puts out 3000 watts when its really pushing 500 (no joke). It matters with the volts (12-14) and the amps from the fuse. So trust me, go to an audio shop and talk to an employee and look around, you always get what you pay for unless you get it for free.