The NAD C 390 DD is a versatile integrated amplifier that combines modern digital technology with classic audio performance. It features a Class D amplifier design, supplying up to 80 watts per channel into 8 ohms, and up to 160 watts per channel into 4 ohms. The amplifier is equipped with a robust digital-to-analog converter (DAC) that supports high-resolution audio files, including PCM up to 24-bit/192 kHz. Additionally, it includes a range of digital inputs, such as USB, optical, and coaxial, allowing for easy connection to various audio sources. The C 390 DD also incorporates Bluetooth connectivity for wireless streaming, making it convenient to connect smartphones or tablets. The device's user interface is designed to be intuitive, featuring a clear display screen and an easy-to-navigate menu system. Furthermore, it supports a range of audio formats and protocols, including MQA for high-fidelity streaming. With its sophisticated digital processing capabilities, the C 390 DD aims to provide an immersive listening experience that caters to audiophiles and casual listeners alike.