A:Answer YES , you can hook up two microphones to this , their are two ways to possibly get this done.
1st was BUY TWO SPEAKERS they can SINC to each other and the use each speakers mic in put.
2nd. Way , get a SPLITTER for the connectors ( mic port ) you might get distortion Using this method ? Just try to separate the mics as far as possible.
And lastly YES you can purchase a wireless microphone ( I did from EBAY $30.00 USD ) and it works well.