Plug-and-play wireless audio system for connecting an instrument to a guitar amplifier without a cable. The system operates in the license-free 5.8 GHz band and provides 24-bit/48 kHz audio, four switchable transmission channels, and less than 6 ms latency. The transmitter and receiver support up to four hours of battery operation, with USB recharging in one hour. The system provides a range of up to 30 m outdoors and 15 m indoors and includes a transport bag.