CLASS D: What we want is for a preamp or power amp to amplify only the AC, or the moving electricity, and we do not want it to amplify or have anything to do with DC on its input or output.  Seems simple enough.

Paul McGowan:  Recently I promised we’d jump into Class D amps and how they work – but before going there I wanted to take a short detour – one that a few of you have been on my case to get out in the open for a while: direct coupling. I really hesitate to write […]

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AUDIO RESEARCH: How they got it both right, and wrong

Paul McGowan writes: Starting in the late 1960s and gaining popularity in HIFI circles in the 1970s, the ubiquitous IEC 320 (shortened from 60320) was immediately embraced by manufacturers; not because it is better (it isn’t), but because it permits the use of multiple cable types without change to the hardware. Once manufacturers began shipping […]

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PS AUDIO: The problem with headphones

Paul McGowan writes: I am often asked what headphones I recommend and the answer for me is simple: I don’t.  While I certainly recognize the popularity of headphones and appreciate what they can do, I am personally not a fan for several reasons: I miss the visceral feel of the music as well as the […]

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IMPOSTERS: When it comes to our HiFi systems and how good they sound, I suspect they are far better than most of us inwardly fear

At some level, we’re all imposters. We fear our projected self-worth—the way we present ourselves or the way we believe others see us—doesn’t live up to expectations. In my 74 years, I haven’t met anyone that doesn’t to some extent suffer from what is commonly known as Imposter Syndrome. Maybe it’s a fear that our HiFi […]

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AUDIO INSIDER

TRADING VITRIOL FOR VIEWS: No, I am not going to mention any websites nor point any fingers. I don’t need to because you already know what I am talking about.

Angry forums with millions of views. If you build a platform for angry voices they will rush to spew their ill temper. One such site, by a famous person in our industry, has millions of viewers and he’s happy about that—not so much about the hate, but the millions. He likes the millions. Is it […]

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AUDIO INSIDER

USERS VS. LISTENERS

Interacting with a front panel has always been important, but rarely how we judge a piece of equipment. Even the klunkiest front panel layouts were tolerated if the unit’s sound quality was up to snuff. The user interface took a distant second to performance. As we rush headlong into the age of the user interface […]

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AUDIO INSIDER

FINDING JUST THE RIGHT SPOT: Most preamplifiers have a zone on their level controls where they sound best; typically higher on their dials.

Finding that perfect spot on the dial isn’t too hard, but getting there can be because much depends on the loudness levels of the source and the sensitivity of the speakers. Most sources don’t have level trim controls to help match their gains to the rest of the system. If you have a DAC, like […]

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LAMP CORD and THE INFINITY IRSV

On the rear of my Infinity IRSV is a wire bundle connecting all the tweeters and midranges to the crossover. The wiring appears to be standard lamp cord until you look closely. There, in small white writing, are the words Monster Cable. Before Monster Cable we all connected our speakers to our amplifiers with what is […]

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AUDIO INSIDER

WHAT, NO CANNONS?

Reader John Vookles sent me this note: “Years ago I was selling a pair of Acoustat 3s so I ran an ad in the paper (this was pre-internet).  A gentleman called and wanted to come listen and I recommended that he bring along a favorite recording. He came with a recording of artillery weapons being […]

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AUDIO INSIDER

OH DEAR: Every time I hear a system better than my own a new bar is set.

We all have a personal set of standards. These bar-setting rules determine just about everything in our lives from how we dress, eat, interact, advertise ourselves, choose our friends, and listen to music. Especially listen to music. The types and quality of music I listen to must meet a specific standard. Shrill, bangy, loud, and […]

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AUDIO INSIDER

WHEN IS IT GOOD ENOUGH?

Most of us live with good enough for the bulk of our lives. The problem for me is deciding when good enough isn’tgood enough—when I suspect something’s better but don’t really know. This can lead to an unsettled feeling filled with hand wringing and constant doubt or I can sometimes just take a deep breath and […]

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AUDIO INSIDER

THE ACTIVE ROOM

At my core, I am an inventor. I love nothing more than to be given a challenge—a problem—that needs a solution and the freedom to invent a new way to solve that problem. One of the greatest joys I have experienced is being part of a team of engineers that can take an idea and […]

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PS AUDIO: Direct Stream Dac Mk2

It’s been 8 years since we introduced the groundbreaking DirectStream DAC. 8+ years since designer Ted Smith blew me away with the sound of his prototype and we began the process of turning it into a product. It’s been an amazing journey and now we’re about to release the MK2 version of this stunning product. As we […]

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LINN ETHOS REVIEWED: Beginning or end?

Linn’s Ivor Tiefenbrun famously suggested that if you can’t get the information off the vinyl disc in the first place then nothing else you do afterward matters. There’s much truth in what he said (though I have never agreed with the conclusion that some make that turntables are more important than speakers). But this thought […]

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AUDIO INSIDER

UPDATE CHANGES

We are truly creatures of habit. We get into a comfortable routine and we don’t want to leave. Change comes along to yank us out of our reverie and we can take one of three paths: object, ignore, adapt. We just launched new Bridge firmware—the very essence of change. Most people will install the new […]

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AUDIO INSIDER

WHICH TO ENJOY?

There are people who use their stereo to enjoy their music. And there are people who use their music to enjoy their stereo. I do not begrudge those in the second group their fun, but I strive always to be in the first group. It’s an easy line to lose track of, but music just […]

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AUDIO INSIDER

THE TWO-LEGGED STOOL

PS Audio engineer Darren Meyers asked me an interesting question yesterday. One I have been pondering for the last twelve hours. Why are speaker measurements made with only one speaker? This was an intriguing thought. We listen to two speakers yet concern ourselves only with the frequency, amplitude, and phase response of one. Why should […]

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AUDIO INSIDER

USERS VS. LISTENERS

Interacting with a front panel has always been important, but rarely how we judge a piece of equipment. Even the klunkiest front panel layouts were tolerated if the unit’s sound quality was up to snuff. The user interface took a distant second to performance. As we rush headlong into the age of the user interface […]

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