Palmer Pan 05. The PAN-05 allows you to connect two microphones to a single channel on the mixing console when you do not have enough channels. Since the signal is decoupled through a balanced resistor network, the PAN-05 also allows phantom power to pass through, which is very useful when connecting condenser microphones.
Due to the difference in sound and signal levels, dynamic and condenser microphones should not be mixed. Better results are obtained with two identical microphones.