Digital audio output refers to the transmission of sound signals in a digital format, which allows for high-quality audio reproduction. This type of output is commonly used in devices like computers, smartphones, and digital audio players, enabling them to send audio signals to speakers or headphones without losing sound quality. The digital audio output can be delivered through various connections, such as USB, HDMI, or optical cables. These connections convert the digital audio data into an electrical signal that can be processed by audio equipment, ensuring clear and precise sound reproduction for the listener.