4 Channel Full Range Class D 2 ~ 4 Ohm Stable 4 x 90 Watts @ 4 Ohm Power/Protection/Clip Indicator Built in Crossover SPECS Total Watts (Peak)1000WRMS Power @ 4 Ohm4 x 90WRMS Power @ 2 Ohm4 x 150WRMS Power @ 4 Ohm Bridge2 x 300W AUDIO Frequency Response20Hz-20Khz - Signal to Noise ...4 Channel Full Range Class D 2 ~ 4 Ohm Stable 4 x 90 Watts @ 4 Ohm Power/Protection/Clip Indicator Built in Crossover SPECS Total Watts (Peak)1000WRMS Power @ 4 Ohm4 x 90WRMS Power @ 2 Ohm4 x 150WRMS Power @ 4 Ohm Bridge2 x 300W AUDIO Frequency Response20Hz-20Khz - Signal to Noise Ratio>90d - BEfficiency @ 4 Ohm0.92Damping Factor78Input Impedance22KChannel Separation55 d - BTotal Harmonic Distortion (THD)0.01%Low Level Input Range0.25 - 6 VHigh Level InputYesSelectable X-over - LPF/FLAT/HPFX-over Filter Range50Hz-2KHz FEATURES Amplifier Class - Digital (D)Amplifier Type4 CH Full Range - Number Of Channels4 CHMinimum Impedance2 Ohm St / 4 Ohm Bridge - Led Indicator - Power | Protection | Clip - Power Input Terminal Size4 GAFuse Size2 X 25AThermal ProtectionYesOver-Load ProtectionYesDc Output ProtectionYesShort Circuit Output ProtectionYesVoltage Input ProtectionYesClipping ProtectionYesBody Color | Finish - Matte Black MEASUREMENT Overall Length8.1" / 205mm - Overall Wide4.72" / 120 mm - Overall Height1.96" / 50 mm - Heatsink Length6.2" / 158 mm - Gross Single Unit Weight1.2 Kg