Phono stage with external power supply

External power supply

— the presence of an external power supply unit (PSU) in the device.

Most often, the meaning of such an arrangement is to move the PSU, which is a potential source of interference, outside the case, to the maximum distance from the components of the phono stage. This is especially true for high-end models. In some cases, an external PSU may also be provided to reduce the size and weight of the device; this moment, on the contrary, is typical mainly for correctors of the budgetary level.