2U 2*50W Professional Amplifier 1.ISO 9001:2000,CE 2. ... .Output power:2*50-300W 4.DC 6V power output 2U 2*50W Professional AmplifierSpecification:Frequency Response20Hz-20KHzFrequency Range2402-2480MHzSensitivity89dB±2dBAudio ... /K-218A/F2102/BYZ-072 pairBH-03BH-071-5pc PAYMENT:L/C,T/T,WESTERN UNION,ALIPAY,ESCROW is available.Please ...