I have used a PS Audio Power Plant Premier (PPP) for many years. It’s more or less a converter, AC to DC then back to AC. Before buying, I researched it and found it did not perform well with high current amps but I tried it with my VTL amps anyway. The amps sounded anemic and lifeless. My front end components only sounded slightly better than without the PPP. A few months later, I replaced my equipment rack and was thinking about selling the PPP. All my gear was plugged directly into the standard wall outlets and that’s when I came to appreciate the PPP. Without the PPP, the sound was ever so slightly harsh. I did not reinstall it for a few days to give my brain time to adjust to the change, then back it went and I just smiled. For me, the PPP is like a dialed in subwoofer, you don’t notice it, until it’s gone.
Note: my amps are on a single 20 amp dedicated circuit and the PPP is powered by a standard 20 amp household outlet. Also, my subdivision is 20 years old and the power company substation is a mile away. All the utility power lines are underground and a few months ago the Transformer serving our street was replaced by the utility co. They said it was close to the expiration date.
Note: my amps are on a single 20 amp dedicated circuit and the PPP is powered by a standard 20 amp household outlet. Also, my subdivision is 20 years old and the power company substation is a mile away. All the utility power lines are underground and a few months ago the Transformer serving our street was replaced by the utility co. They said it was close to the expiration date.