We are an authorized Power Acoustik dealer The Power Acoustik RZ5-2500D 5-channel car amplifier features a MAX power handling of 2500 watts and a RMS power handling @ 4O Bridged of 2 x 300 + 1 x 600. Other features include Small Compact 4.75" Wide Chassis, MOSFET PWM Power Supply and Dash Mount Remote Gain Control Included. MOSFET transistors increase durability and longevity over bi-polar counterparts. The Class D Output transistors rapidly switch completely "on" and "off" at least twice during each cycle. These amplifiers boast higher efficiency, produce less heat and draw less current than Class A/B designs. Best used for Subwoofers. RMS @ 4O Bridged: 2 x 300 + 1 x 600 RMS Power 2O, 14.4V: 4 x 150 + 1 x 600 RMS Power 4O, 14.4V: 4 x 100 + 1 x 400