The Dual Electronics DMA802D 4 Channel MOSFET Powered Amplifier boasts a wide selection of features that makes this amplifier the perfect choice for you!" or "Your Class D Amplifier hits 600 Watts at its peak dynamic performance, and a 20Hz~20kHz Frequency Response. The DMA802D 2 Channel Amplifier has RCA (low level) and speaker wire (high level) inputs with auto turn-on, as well as a variable gain adjustment of 200mV to 6V. With the amplifier's selectable crossover, you have your choice between variable high pass & low pass settings! To get more kick out of your subwoofer, the DMA802D offers an option for bass boosting (0-12dB). The amplifier has a 2 Ohm Stable stereo operation and is powered by a PWM MOSFET power supply for higher efficiency and a longer life. " or "Our engineers designed the DA6002D to have a Class D Design, which reduces the size of the power transformers, which is always preferable for powering your subwoofers. Your amplifier was also designed with bridgeable operation for subwoofer applications! This means that you can connect the DMA802D with a subwoofer to give it an extra boost in power! " or "One of the most impressive features of this amplifier is its 2 Channel Design, ideal for powering 2 speakers or 1 subwoofer.