Audiophilepure

https://www.stereophile.com/content/piega-coax-811-gen2-loudspeaker

Any tendency toward tightness was mitigated by the Puritan PSM156 mains purifier ($2400), a six-outlet unit into which I’d plugged all my electronics except the Krell. I also used two Puron plug-in AC line conditioners ($295 each), cylindrical devices about the size of a KT88 tube. Inserting the Purons into the wall receptacle and/or the first outlet of a power conditioner will reduce system noise, the manufacturer claims. The Puritan, meanwhile, is said to battle both common-mode and differential-mode interference, remove DC offset, and scrub the earth-ground line of sonic impurities. It also offers 9000A of surge protection.

Adding first the Puritan and then the Purons made the air in classical recordings seem a bit more expansive, and music went up a step in effortlessness. The Puritan and Purons also subtly increased my system’s resolution. When, during this review, I spent a few days auditioning a 30-year-old Aragon 4004 MKII power amplifier—I was trying to decide whether I should keep it—the Puritan ably suppressed some low-level transformer hum. The three Ps—Piegas, Puritan, and Purons—played well together, but even without help from power-massaging devices, the Swiss speakers impressed with imperturbable precision and the ability to express fine detail.

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