a transmitter body, comprising a control module, wherein the control module is configured to convert a target audio analog signal sent by a transmitting device into an audio digital signal and can wirelessly transmit the audio digital signal;

a first connector, electrically connected to the control module, wherein the first connector is configured to be connected to one type of the transmitting device and comprises an audio plug configured to obtain the target audio analog signal and a power supply connection configured to obtain electric energy; and

a second connector, electrically connected to the control module, wherein the second connector is configured to be connected to another type of the transmitting device,

wherein the transmitter body further comprises a housing, and the control module is disposed in the housing; and the transmitter further comprises a connecting wire, the connecting wire is connected between the second connector and the control module, the second connector can move relative to the housing through the connecting wire and have a first state and a second state, in the first state, the second connector is mounted in the housing, and in the second state, the second connector is separated from the housing.