Monoblock Class D Amplifier Bass Boost: 0 to 12dB (50Hz) Thermal Management: Smart Cooler (Fan Powered by Temperature or Audio) Input Impedance: 56K-Ohms Protection System: Output Short/High/Low Supply Voltage/Thermal Protection Minimum Supply Voltage: 9V DC Maximum Supply Voltage: 16V DC Dimensions 9.00" x 16.50" x 2.75" Weight: 14LB