Available now are these Sennheiser model EM 2050 dual channel wireless microphone receivers that operate in the 626-698MHz frequency range, we have fully tested each of these with a transmitter and they work great. You will be receiving the unit exactly as shown, it includes the power cable but no transmitter or antennas. Overall these are in nice preowned condition, they may show light to normal signs of use but nothing excessive, please let us know if you have any other questions.