mini-i uses two AD1955 D/A chips, its USB port supports up to 16Bit/48kHz of digital signal input and other ports support up to 24Bit/192kHz of digital signal input. It has a LCD display and 90 digital volume control. it also has both balanced and unbalanced line outputs. Headphone output can drive 300 ohms of headphones. With a digital output which can output digital signals to other devices. Infrared remote control can remotely operate the volume, mute, input channel and switch.