Arc Audio X2 600.4 Multi-Channel Amplifier (Four-Channels) Multi-Channel Amplifier (Four-Channels) Microprocessor-Controlled Class-D Design Designed And Engineered By Robert Zeff High-Frequency Power Supply Design For Improved Signal Transparency And Overall Sound Quality Remote Bass Boost Control (Included) Extruded Aluminum CNC Chassis Design (Level 2 X2 Cosmetics) Start-Stop Vehicle Compatible Signal Sense and DC Detect Single Side Connection Design Nickel Plated RCA Terminals Quick Disconnect Speaker Terminal Plugs Audiophile Class-D Output Filter Networks Detailed Microprocessor Controlled Protection Large, High-Frequency Switching Power Supplies RCA Inputs Are Compatible With Speaker-Level Inputs Fault Codes Storage Of The Last Protection Code Detected Hi Signal To Noise Ratio Without Compromising Power Output Fully Balanced Input Stage Significantly Increases Flexibility Ultra Low ESR, High-Capacity Power Supply Storage Capacitors Flexible Mounting Orientation For Vertical Or Horizontal Installations Next Generation High Speed Class-D Technology Powering All X2 Amplifiers Bridged Mode Auto Detect Turn-On Works With Most Chip Based OEM Headunits Precision Filtering Isolates The Power Supply Reducing Unwanted Interference In Radio Reception Quick Disconnect Type Terminal Connections Specifications - 4- Channels @ 4 Ohms - 150 Watts 4-Channels @ 2 Ohms - 150 Watts 2-Channel @ 4 Ohms (Bridged) - 300 Watts 2-Channel @ 2-Ohms (Bridge) - Not Recommended Frequency Response - 20Hz - 20kHz Crossover Range - 50Hz - 550Hz Crossover Types - HP/LP on all channels Bandpass Crossovers - Yes Ch 3/4 Only Remote Level Control - Yes Remote Level Control Included - Yes - LP Front Channel only Input Sensitivity (Low) - 200mV - 3.5V Fuse - 2 x 30 Amp Dimensions - 9.020"(L) x 6.268"(W) x 2.162"(H)