There can be any number of receivers on the same channel of the master transmitter. This number can be as high as 1000

There is 50 channel possible. The master transmitter and the receiver or receivers should be on the same channel from 01 to 50.

The slave transmitter (red) is a second source of transmission to the receiver. Sound can be send to the receiver from two sources: from the blue transmitter and from the red transmitter. The red and the blue transmitter don’t have to be at the same location.
The participant can choose any earphone or headphone with an interface of 3.5 mm