The PSU101 is a universal non-switching, analog power supply. The voltage regulator circuitry is built with discrete components. It is very low noise but still capable to drive complex loads.
The mains transformer has a toroidal core for low radiation and low noise. The housing uses a double frame consisting of an external aluminium shell and an internal stainless steel frame for shielding and safety. The integrated heat-sink is oversized by a decent margin.