PS Audio is a Colorado-based company that was founded 40 years ago, and has made everything from DACs to preamps in that time. It still has a commanding reputation in digital audio and more recently high-grade phono equalisers. Regardless, PS Audio has become best known for its power products; when original co-founder Paul McGowan bought the name back in 1997, it was power conditioners, and specifically regenerators, that gained the brand the most interest. Where most power products that are made to improve the quality of the AC mains are essentially filters designed to remove as much noise from the mains signal as possible, regenerators effectively recreate the mains sinewave from scratch.
Recently, PS Audio replaced its Premier regenerators with the Power Plant range. As well as being rather more attractive than its predecessor, this range has a number of distinct ‘firsts’. For starters, Power Plant models have a touch screen interface, which allows you to see the difference between incoming and outgoing AC sinewave. This lets the listener choose the best compromise between minimising distortion and degree of regulation, the latter for situations where the incoming AC mains fluctuates significantly. You can also choose to switch off outlets that are not in use, although there doesn’t seem to be a disadvantage in having them all powered up. Unsurprisingly for PS Audio (but less obvious on a power device), the Power Plant has a network connection and an SD card slot. The former means the Power Plant can report problems and show measurements online; it can even text or email you, which is perhaps a little more interaction than most of us need, but it’s certainly of the moment. The flash card slot allows firmware upgrades. The key difference between Power Plant and Premier is a 100x reduction in output impedance, which means a stiffer power supply, something from which all forms of supply could benefit.