FEATURES 1.DSP-B Series professional network power amplifier adopted 24 Bit professional DSP audio CMOS chip; 2.It is designed for long distance; 3.it is preferred for Gymnasium and Large scan audio system; 4.This series power amplifiers can be adjusted by hand and also can be controlled by computer. so it's very convenient for using. you can control about 255 pcs power amplifiers by computer; 5.The control distance can meet 1000 meters in theory(different condition with different controlled distance); 6. You can adjust the Gain, Equalizer specification, Crossover, Delay, Opposite phase, Limiter and so on for each power amplifier. and also can adjust the stereo Single Channel and bridget and so on. You also can adjust the specification above by hand completely without connecting to the computer; 7.The two dual-speed fans switch automatically to maintain the proper internal operating temperature, protect the amplifier to operate for lomg time safely; 8.The unit has various input/output connectors, it have 3 way sensitivity switch for choose level, stereo, bridged-mono, and parallel mono. It can connect the speaker speedy by the professional SPEAKON; 9.The unit has consummate working status indications including. You can be clear at a glance of the working status through the LED indicator in the front panel of DSP-B series amplifier, and let the operation more easily.   SPECIFICATION   Model DSP-B200 DSP-B400 DSP-B600 DSP-B800 Stereo (8ohm) 2X200W 2X400W 2X600W 2X800W Stereo (4ohm) 2X200W 2X700W 2X1050W 2X1350W Stereo (2ohm) 2X500W 2X1000W 2X1400W 2X1800W Bridge (8ohm) 650W 1250W 1750W 2300W Bridge (4ohm) 950W 1700W 2300W 2900W Output Circuit Class AB Class H Frequency Response 5Hz ~ 50KHz THD <0.05% Slew Rate 40V/us Input Impedance 20Kohm Signal Noise Ratio >103dB Damp Modulus >400 Radiator High/low Automatism control Gross Weigh 21KGS 25KGS 28KGS 29KGS