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.
The Digital Signal Processing that PS Audio uses to generate a new AC sinewave in the Power Plant models has a 16-bit, rather than 8-bit, DAC. They have also improved the software-based phase locked loop (PLL) circuit to make the Power Plant more tolerant of phase issues. The new regenerator can also cope with a wider range of incoming voltages: it can deliver a steady 220 to 230 VAC, while the power coming from the wall can vary between 190 and 275 VAC. However, I doubt that most of us in the UK see even a ten per cent swing. While the technology behind the regeneration process is digital the output stage is essentially a Class A/B analogue power amplifier that, in the case of the P5, has a 1250 VA output.
Technical Specifications
Output: 1250 VA
Features: Surge protection
Spike protection
Regulated output voltage
100% regenerated AC
Integrated oscilloscope
THD meter
Control over the web or network
Adjustable output voltage
Dimensions: W 430mm H 115mm D 360mm
Weight: 24kg
Manufacturer: PS Audio