A "digital amplifier" in audio technology refers to an electronic device that boosts audio signals using digital processing. Unlike traditional analog amplifiers, digital amplifiers convert audio signals into digital format, process them, and then convert them back to analog for output. This offers advantages like improved efficiency, clearer sound quality, and the ability to implement advanced features such as equalization and dynamic range control. Digital amplifiers also tend to be more compact and lightweight, making them suitable for modern audio equipment and environments.