A two-way Opencable multi-input and multi-output device used with a tuner, and the multi-input and multi-output device includes an over-the-air signal input port connected for an over-the-air signal, a cable signal input port connected for a cable signal, at least one or more splitters to split the over-the-air signal or the cable signal to plural output ports, a shield cable to connect the splitter connected to the over-the-air signal input port and the splitter connected to the cable signal input port. The two-way OpenCable system can prevent transient states upon channel changes.