Stereophile write: "I don't believe it!"
I had just unplugged my preamplifier from the PS Audio Power Plant P300 and powered it from the wall socket, and was reacting to the resultant "grayness" that had been reimposed on my music. We seem to be more sensitive to hearing subtle but ultimately important sonic effects when they are removed than when they are introduced—as I describe in this issue's "Follow-Up," the AC regeneration offered by the Power Plant strips away a veil from the sound of my system and increases the saturation, the contrast of instrumental colors. It does this in a way that proved addictive, to my checkbook's detriment.
AC regeneration is not new to high-end audio. I first heard its effect in the mighty Mark Levinson No.33 Reference amplifiers, and in the Connecticut company's more recent No.32 Reference preamplifier. But the PSA Power Plant is the first standalone component to offer what I have come to believe is a significant step forward in freeing audiophiles' systems from the effects of the often-contaminated AC flowing through their walls. So when PS Audio's Paul McGowan passed through Santa Fe just before Christmas 1999 on his way back from Texas to home base in Colorado, I asked him for a bit of oral history.
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Neil McCauley / editor in chief