Amplifiers are needed to power passive speakers and passive subwoofers. Matching an amp to your speakers can be tricky, though. It's important to consider the continuous power rating (not the peak) and the Ohm rating. Configuration of the speakers will also effect the Ohms of the system. For example, two 300 Watt / 8 Ohm speakers on the same amp channel will effectively change the speaker load 600 Watts, 4 Ohms. We have a wide selection of DJ amplifiers for you to choose from. Scroll down and view our professional amplifiers for sale.