As some members know, I have been a big advocate of power regenerators for creating nice clean mains power with low output impedance and 'stiffness'. The PS Audio P10 has been in my system for over a decade. Just a couple of days ago, I took it one step further by buying a smaller P3 and moving all my source components from the P10 to it, keeping power for the constant load source components separate from power for the varying load power amp. It has been a great success, improving sound quality in virtually all parameters.
The feeling of endless power reserves comes partially from the ability of regenerators to present a lower output impedance than the mains itself, together with reserves that keep the power 'stiff' (unyielding to voltage drops during high demand). Deep bass transients, drum stick work and the general 'snap' of all music really benefits from this kind of power treatment. It's something that filters alone cannot achieve.
It sounds like an impressive upgrade. Is the P3 the smallest regenerator PS Audio do?
Yes, Mat, the Stellar P3, to give it its full name, is the smallest in the PS Audio range but it could potentially power an entire system or, as I use it, power all the source components. Being a new design, it also features lower noise and tighter regulation than my older P10.
When I was running the whole system from the P10 it only idled at 100W and rarely went above 200W even at huge volumes. So my issue was never overloading it, it's more about running the system from different zones of clean power.