Drive your audio experience to the next level with the Planet Audio Pulse PL1600.4 Class A/B 4-Channel Full Range Amplifier. This powerful 2-Ohm stable Amplifier features 1600 Watts Max Power with a MOSFET power supply to rock your tunes. Customize the sound with Fixed High Pass Crossover, Variable Low Pass Crossover and Bass Boost. Turn it up with the Remote Subwoofer Control. Bridge channels for more power and flexibility. When space is limited but your passion for great sound is not, Pulse Amplifiers with blue illuminated end panel strips and logo are just what the doctor ordered to power up your music and get your heartbeat racing. Get your tunes cranked up with the Planet Audio PL1600.4. For further product details, please scroll down. Power - 400 Max x 4 @ 2 Ohms, 200 Max x 4 @ 4 Ohms, 800 Max Bridged x 2 @ 4 Ohms Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers Variable Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers Variable Low-Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction