FEATURES: Intergrated 24 bit digital stereo DSP processor with 32 Preset including reverb,delay, chorus,tube distortion,channel for easy to use along applications; 7 band stereo graphic EQ allow precise frequency correction of monitor or main mixer; 2 fully equipped stereo input channels,3 band EQ AND MID Frequency control; Clip indication and gain level set LED plus mute switches for each channel allow fast and accurate level setting; Switchable +48V phantom power for condenser microphone; Long-wearing 60 mm logarithmic-taper faders and sealed rotary controls; Response plus lowest possible power consumption for energy saving.  SPECIFICATION Model DSA0815 DSA1220 Amplifier Output 2*150w,8ohm , 250w,4ohm 2*200w,8ohm ,400w,4ohm Mono Input Channels Balance MIC or Line Input Stereo Input Channels Balance or Unbalance Stereo Line Input Frequency Response 10Hz~30KHz +/-3db 20Hz~20KHz +/-0.5db MIC Sensitivity(22Hz-22KHz) -129.5db, 150 Ohm Source; -132db, Input Short Circuit Gain Adjustable Range +10db~+60db Line Input Range -40db~+10db SNR More than or equal to 113db THD Less than or equal to 0.01%(+4db, 1KHz) EQ HF:12KHz+/-15db MF:5KHz+/-15db LF:80Hz+/-15db Max Input +22db Max Output +22db Balance, +16db Unbalance Effector 24bit DSP, Multi-effect Processor, 48KHz Sampling Frequency, 32 effect modes memory, LCD display Phantom Power 48VDC Power Supply AC100~120V/200~240V 50/60Hz Dimensions 45.00x34.00x23.00CM 45.00x40.00x23.00CM Gross Weight 16.00KGS 18.50KGS