Fangrui Product Details All Parts Of This Product Are For Original, And Of Pure Quality. Using High-quality For Original Parts Not Only Guarantees Safety And Quality, But Also Has A Long Service Life. More Importantly, It Is A Strong That The Actual Performance Can Meet The Design Goals. Adopt For Original Tpa3255ddvr. The Electrolytic Capacitor Adopts Famous Capacity 470uf/50vx8, Ensuring Strong And Continuous . The Resistor Uses High-precision Chip Resistors To A Good Signal-to-noise Ratio Of The Whole Machine. Uses A Special Magnetic Ring Inductor For Audio To Crisp And Powerful Sound. Pcb Uses 1.6mm Thick Double-sided Sheets, 2.0 Oz Copper Thickness, And Full Tin Spraying Process To Good Passing Performance Of Large And Small Currents. Top- Pcb Quality. Working Method:class D Quiescent Current:300ma Work Efficiency: Output Power:450w/3ohm, Distortion , 600w Frequency Response:20hz To 20khz Dynamic Range: 100 Db Signal-to-noise Ratio:() 111db Working Voltage:dc24-48v Switching Power Supply (dc) Pcb Size:110x102mm Col