Can we go back to the statement about not using speakers that dip below 4 ohms....what normal speaker doesn`t ?
John Atkinson did not write one should not use speakers that dip below four ohms.
He wrote “[I]t is a well-designed, well-engineered powerhouse of an amplifier, though it will perform at its best with speakers having an impedance of 4 ohms and above.” A perfectly reasonable statement as he found distortion increased slightly into four ohms and below. This finding is perfectly normal and common.
As a practical matter, one will never hear this measured increased distortion, even into speakers which truly present a four ohm load instead of merely dipping below four ohms on occasion. But, on a measured basis, the amp does do its carefully measured best above four ohms.
On another topic, I do not find Mr. Fremer’s brief observations on PS Audio’s marketing out of place. It is relevant, albeit not directly tied to the performance of the amp. I, too, find PS Audio’s marketing overly breathless and hyperbolic. It is appropriate to question the factual foundation of statements such as “has no peer,” “unparalleled in its ability to render details,” “one of the top five power amplifiers in the world, regardless of price.” But coming to know Paul, he is justifiably proud and fully believes what he is saying - as Mr. Fremer specifically noted.
And I would much rather read these comments than Mr. Dudley’s political observations, Mr. Tellig’s travel logs and hero worship, etc.
I would enjoy learning Mr. Fremer’s observations of the differences in the amp’s sound balanced v. single-ended. It is fully reasonable to have listened to the amps single-ended, but perhaps balanced operation would remove the slight reservations he expressed.