the transmitter comprises a main signal processing portion, a 5G wireless transmitting portion, a first single chip portion, a LED indicating and displaying panel portion, and a first power supply portion, wherein the main signal processing portion comprises a universal interface unit, a digital audio processing unit, a multichannel analog input unit, a multichannel ADC, a first high speed multiway switch, and a second high speed multiway switch; the universal interface unit comprises a coaxial input interface, a surface panel optical fiber input interface, a rear panel optical fiber input interface, AES/EBU digital input interface, Bluetooth? antenna, USB input interface and TYPE-C input interface; the digital audio processing unit comprises a digital audio receiving module and an asynchronous sampling rate conversion module; an output end of the multichannel analog input unit is connected to an input end of the multichannel ADC; control ports of the first single chip portion are respectively connected to control ports of the TYPE-C input interface, the digital audio receiving module, the asynchronous sampling rate conversion module, and the 5G wireless transmitting portion; the LED indicating and displaying panel portion and the first power supply portion are respectively connected to the first single chip portion; the coaxial input interface, the surface panel optical fiber input interface, the rear panel optical fiber input interface, the AES/EBU digital input interface and the TYPE-C input interface are respectively connected to an input interface of the digital audio receiving module; the Bluetooth? antenna and an output interface of the digital audio receiving module are simultaneously connected to the first high speed multiway switch; the USB input interface has two signal output ends, one of which is connected to the first high speed multiway switch, and another one of which is connected to the asynchronous sampling rate conversion module; an output end of the asynchronous sampling rate conversion module and an output end of the multichannel ADC are simultaneously connected to the second high speed multiway switch; an output end of the second high speed multiway switch is connected to the 5G wireless transmitting portion;