The Naim XPS DR is a power supply upgrade designed to enhance the performance of compatible Naim audio equipment. It features Naim's advanced DR (Discrete Regulator) technology, which improves the stability and low noise operation of the power supply, resulting in cleaner power delivery to connected components. The XPS DR is built with a solid aluminum chassis to minimize resonance and external interference, ensuring that audio signals are transmitted without degradation. The device typically supports devices like the Naim ND5 XS and NDX, and is designed for easy integration into an existing Naim system. Key specifications include multiple outputs for various devices, a dedicated power supply for digital or analogue components, and a comprehensive internal regulation system that significantly reduces power supply noise. The device also emphasizes the importance of physical isolation and grounding for optimal performance, featuring high-quality connectors and cabling to maintain signal integrity.