Soundking Amp AL 400 2*200W 8 Ohm-Highly efficient radiator and infinitely variable speed cooling fan make sure amplifier operates under low temperature-Large-size ring transformer guarantees sufficient power supply-Elegant contour and standard mounting hole-Perfect limiter, startupshutdown shock, direct current, short circuit and overheat protection-Built-in limiter avoids speaker damage-Favorable audio performance, excellent signal conversion characteristic and very small THD and IMD-SMPTE renders true reproduction of sound-STEREO, BRIDGE and PARALLEL mode-Each channel has exclusive “Signal” and “Clip” indicators-When circuit protection starts, “Fault” indicator turns on and sound output halts automatically.-Level and gain control at front panel-Brand new SMD technology guarantees stable product performance-Transistor contacts radiator directly to dissipate heat quickly-Improved cooling system, namely the auto speed cooling fan, ensures a more stable operation,-Exclusive short circuit lock and auto reset function offer a straightforward outlook8O Stereo Power: 2x200W 4O Stereo Power: 2x300W 8O Bridge Power: 600WSensitivity: 0.775V / 1.4V Input Impedance: 20K(bal) /10K(unbal) Frequency Response(1W): (20Hz-20KHz)±1dB S/N Ratio(A-weighted): >100dB THD: Crosstalk(A-weighted): >-70dB Damping(1kHz 8O): >300 Protection: Audio limiter, high temperature, direct current, short circuit, high frequency, current limiter, delay start Operating Voltage: 110~120@220~240AC 50/60H Dimension(W×D×H): 482x353x88mm(2U) Weight: 12kg