Brand New Power Acoustik VA1-10000D. 10,000 Watt Mono-Block Class D Amplifier with Wired Bass Knob. Class D Monoblock Amplifier. Hybrid Aluminum Alloy Heatsink for Optimum Dissipation. 1-ohm Minimum Impedance Class D Monoblock Operation. MOSFET Power Supply w/ Audiophile Grade IRTM Transistors. Military Grade SMT PCB Maintains Dynamic Performance. Direct Short, Thermal, & Overload Circuits Protect Amplifier. 200mV-6V Low Level/RCA Input w/ Bridged Operation Outputs. Barrier Strip Wire Terminals, 4g Power & 8g Speaker Outputs. Variable 12dB High Pass, Low Pass, & Subsonic Crossovers. 12dB Bass Boost Increases Low Octave Harmonics. Dash Mount Gain Control Module Included (monoblocks). Dimensions: 18.25″L x 8.75″W x 2H. Our company has been in the stereo business for over 15 years. We will gladly answer any technical questions you have.