The ECD Series is a dual channel wireless microphone system. The ECD features dual receivers in a rugged plastic housing with two internal antennas, one for each receiver. Each receiver has 16 selectable channels and IR Sync from the receiver to the transmitter. Output from each receiver is controlled by the front mounted volume controls and is sent to the single 1/4" output jack on the back of the receiver. The ECDR can be used and will sync with either the HH38 handheld or the MBP38 body pack transmitters. Systems with the MBP38 body pack are available with either a lavalier, headset, or guitar cable. Both transmitters feature an on/off switch and are powered by two “AA” batteries. The MBP38 body pack transmitter also features a Mic/0/-10 selector switch for various input level sources.