All turntables need proper grounding, otherwise electrical hum may be induced. If a turntable is not properly grounded, it may have a different reference potential than the connected amplifier. Consequently, these potential differences induce a compensating current that can be heard as a hum.
Therefore, all good turntables have a separate ground wire that can be connected to standard amplifiers or phono stages, which usually have a ground terminal. In this way, the different potentials are equalized and the hum is no longer audible.
However, many modern amplifiers, especially most sound bar amplifiers or streaming speakers, are not grounded. These systems are called "floating mass systems." If a standard turntable is connected to such a "floating mass" amplifier, the result will be an audible hum.
That's why we designed the High Power it power supply. The High Power it is a three-pin grounded power supply for Pro-Ject turntables to get rid of these ground-related hum problems, which especially occur with "floating mass" amplifiers, which do not have a true grounding.
Additionally, the High Power it provides cleaner current and more power to all 15V DC Pro-Ject turntables.
Characteristics:
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