Talk about a Scarlet Letter. The term class-D amplification, which describes PS Audio’s new M1200 monoblocks, exists only because another amplifier innovation had already parked in the “C” space. Soon after appearing in high-performance audio gear, class-D became synonymous with “digital amplification” in part because, like early CDs, many listeners found the sound glary, hard, and unpleasant. Besides, class-D is related to “pulse width modulation” and requires a low-pass filter to block high-frequency pulses—that sure sounds digital. But they’re not (see sidebar, p.85).
To this day, many audio enthusiasts remain unconvinced by class-D technology. Why?
According to Bruno Putzeys, one of the format’s leading innovators, “a high-performance class-D amplifier contradicts every single item of audiophile superstition. Designing one is the ultimate test to see if you’ve got your head screwed on right.”1 Maybe that’s why. Judging by this powerful amplifier’s sonic performance, Stellar M1200 designer Darren Myers definitely has his head “screwed on right”!
Putzeys also said, in the same interview with Sound & Vision’s Bob Ankosko, that “there are a few distortion mechanisms conspicuously missing in class-D, mostly those related to the input stage of a class-A(B) solid state amplifier and nonlinear capacitances” that are also “missing in valve [tube] amplifiers.” This newfangled technology, then, has much in common with old-school tubes.
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Denne historien er fra January 2021-utgaven av Stereophile.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
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INSTANTLY ICONIC
AUDIO SALON HOST/ENTREPRENEUR/SYSTEM AND FASHION DESIGNER DEVON TURNBULL'S RECORD-BREAKING ART OF NOISE SHOWING AT SAN FRANCISCO MOMA.
Buckeye PURIFI EIGENTAKT 1ET9040BA1
Back in 2016,' I documented the rise of class-D amps using the early Tripath technology. Used in the Bel Canto eVo 200.2, TriPath cracked open the door to the High End but was never admitted due to a dim and opaque treble.
Moon 891
No less than eight boxes, powered by six after-market power cables, comprise my current reference front-end.'
Clearaudio Signature
The Clearaudio allowed each mix, each sonic artifact, to reveal its unique character.
Gryphon Audio Designs Diablo 333
What's in a name? Denmark-based Gryphon Audio Designs laid down a marker when company founder Flemming Rasmussen chose that name in 1985. Browsing through the current Stereophile Recommended Components list, I only found one other manufacturer that utilizes an animal moniker.
The Rega Naia Turntable. Add Lightness.
To watch as Rega very slowly expands its turntable offerings upmarket requires the patience of a Thomas Pynchon addict waiting for each new tome from the notoriously slow-working and reclusive author.
Phono Preamplifier Seduction
Give me the seduction, give me the pleasure,\" Ron Sutherland was nearly shouting into the phone. \"I want to turn off the analytical mind and just enjoy myself!\"
Record Player Revelations
Like romance or car racing, the act of playing records is tactile by design. Like drifting through curves or making out, spinning vinyl is a learned skill that requires users to touch everything with practiced assurance.
Taking Care of Business
As Jim Austin wrote in this space in the December 2024 issue, following a medical procedure that he had in mid-October, he needed to take several weeks' leave to recuperate. He delegated the magazine's production to Managing Editor Mark Henninger, AVTech Editorial Director Paul Miller, and myself. The three of us worked with copy editor Linda Felaco and longtime art director Jeremy Moyler to produce the issue you hold in your hands.
Estelon X Diamond Mk II
Taste is a funny thing. Love cilantro? Millions swear it tastes like soap.
