Features Specifications:Sell NAPHON karaoke power amplifier KA-100  FEATURES  Special sound feedback handling Special sound effecting design Big Dynamic character. HIFI Hidden adjusting Delay, Echo, Repeat function Support 3 mic. input Bass, Treble volume control SPECIFICATION Model No. KA-100  Output Power 2x100W THD 0.3% Frequency Response 20Hz20KHz Line Input Mic:0.5mv-100mv/2kohm, Line:0.7mv/51kohm, Video:1Vp-p/75ohm Tone Control Music:Bass+/-12db, Treble +/-12db, Mic:+/-12db Output Sensitivity Audio:0.707v/51kohm, Video:1Vp-p/75ohm Gross Weight 12.50KGS Dimensions 53.00 x 46.00 x 25.00cm