Ok I'm selling 2 of these receivers because I don't really know which one goes with the 2 mics. I know that one of them does either the 123 or the 124. I know that the microphone model numbers are MH-203 so if you know which one goes with the set please let me know. For some reason I want to say that the 123 goes with these mics but I'm not quite sure. I don't have speakers to test them with. Both units have been pluged in and do power up fine and the mics do work as well. Ok so like I said you'll get the 2 receivers but only one will go with the 2 mics. If you have any questions please email me.