A device that transmits an instrument’s signal to an amplifier or other audio equipment without the use of a cable provides freedom of movement and eliminates tripping hazards. An example would be a musician performing on stage, using a transmitter connected to their guitar and a receiver connected to the sound system, allowing them to roam freely without being tethered.
The use of such devices offers increased stage presence, a cleaner stage appearance free from cable clutter, and reduced risk of accidental cable disconnection. The technology has evolved significantly, transitioning from early systems prone to interference and signal degradation to modern digital systems offering improved audio quality and reliability. This innovation has profoundly impacted live performances and studio recording environments.