SMAKN&reg; TK2050 2x50w Dual track stereo D/Tdigital power amplifier HIFI board module Supply Voltage:10V-30V Output power :50W+50W(6 ohms)@ VCC=24v 50W+50W(8 ohms)@ VCC=30v Static current: 30mA Signal/Noise Ratio: 103db Frequency response: 15Hz to 25KHz Input Impedance: 2k ohms outout impedence: 6ohm-8ohm PCB Board dimensions: (91.6x57.5x21.0)mm