VocoPro DA-9800 RV 600W Professional Digital Key Control Mixing Amplifier NEW. 300W + 300W Max power output (4 ohms). 150W + 150W Continuous power output (4 ohms), 4 speaker output for increased sound coverage. 15-Step DSP key controller with auto reset. Digital echo with repeat and delay controls. Powered by SixBit’s eCommerce Solution.