Provide a device of the management radio frequency (RF) and ultrasonic signals for exporting by a generator, system, and method, it includes that a surgical instruments includes that RF energy output quantity and ultrasound output quantity and can be configured to receive the circuit of combined a RF and ultrasonic signal from generator, and wherein circuit can be configured to the filter frequency content of combined signal and be configured to supply to a coarse filter signal of RF energy output quantity and the aflter-fillter signal or circuit of ultrasound energy output quantity can be configured between the output quantity of surgical instruments and be switched.