USB Audio refers to the transmission of sound data through a Universal Serial Bus (USB) connection. This technology allows digital audio signals to be sent from devices like computers, smartphones, or tablets to audio equipment such as speakers, headphones, or digital-to-analog converters (DACs). Using USB for audio provides several advantages, including improved sound quality and reduced interference compared to traditional analog connections. It also supports various audio formats and can deliver power to connected devices, making it a versatile choice for both casual listeners and professional audio setups.