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Amanda Mc Boom Boom again? 32

Posted 7 years ago

After reading yesterday’s post about the art of the demo, my friend Jim McCullough of Cello reminded me that the third side of the demo coin was the endless playing of the same Audiophile pap to demo equipment at shows. I can remember thinking if I hear Amanda McBroom one more time I am going […]
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Integrateds 23

Posted 7 years ago

In yesterday’s post about the preamp conundrummany of you correctly pointed out that what I was referring to is called an integratedamplifier but perhaps missed my point. The day of the preamp as a separate is long over and while there are multiple ways to address the issue: adding amps to all preamps or preamps […]
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The preamp conundrum 9

Posted 7 years ago

One of our customers was upset because he loved the sound of our phono preamplifier directly into his power amplifier but then not so much when he inserted his preamp between the phono stage and his amp. His question, naturally, was this: if my preamp sounds great by itself and the phono stage sounds great […]
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The invention of MultiWave 2

Posted 7 years ago

Oops. Sorry. This post got left out and was part 1 of a 3 part series – of which parts 2 and 3 have already run over the last 2 days. To complete the series, this first one, the invention of MultiWave, now runs. MultiWave is a feature unique to Power Plant regenerators. Unlike sine […]
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Striking Gold 7

Posted 7 years ago

In yesterday’s post we covered part 2 of the MultiWave story and how my experiments with higher frequencies feeding power to the connected equipment gave me breathtaking results in the top end and midrange, but lost midbass and bottom end at the same time. Truly, this was thequintessentialdouble edged sword – but I wasn’t about […]
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The double edged sword 14

Posted 7 years ago

In yesterday’s postwe began the story of how MultiWave was invented. We left off at the point where I started questioning what was so sacred about the 60Hz frequency that comes out of the wall socket and started experimenting with higher frequencies in an attempt to “increase” the size of the power transformer inside connected […]
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The cure can be worse than the disease 3

Posted 7 years ago

In our comments about amplifier damping and how higher damping factors offer better control of the loudspeaker than that of low damping factors, several of you wrote suggesting that some high damping amps sound cold while the opposite can also apply. This observation has merit but the conclusion that better control of the loudspeaker means […]
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Cartridge damping 2

Posted 7 years ago

In yesterday’s post about amplifier dampingwe covered what it meant and what happens when a power amplifier loses control of the loudspeaker – you get differences in amplitude that are anything but accurate. There is another type of damping that I reminded of: cartridge damping. Phono cartridges have a problem similar (and for the same […]
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Damping factor 7

Posted 7 years ago

The damping factor of a power amplifier is a metric used to describe the amplifier’s ability to control the loudspeaker. It’s basically calculated by dividing the amplifier’s output impedance into the loudspeaker’s input impedance when the speaker is operating near resonance. It’s a really important number to know when you’re making a decision on matching […]

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Two types of customers 4

Posted 7 years ago

I am convinced there are two main types of customers for high-end audio: dealers and end users. If you’re a manufacturer which customer do you design your product for? Both are absolutely valid. Dealers have constant day-to-day communication with end users and collect all the info from them and then ask manufacturers to fill the […]
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Cameras and stereos 6

Posted 7 years ago

I am a photo buff. Have been shooting pictures both as a professionaland anamateurfor most of my adult life. I shoot with a fancy pro camera. I shoot because I love the process, the kit, the whole magilla. In fact, sometimes when I frame a shot in the viewfinder that floats my boat I get […]
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Visionary vs. engineer 7

Posted 7 years ago

My friend Mark Levinson, the man not the company, is a visionary not an engineer. In fact, I doubt Mark knows how to design anything electronic yet his namesake adorns some of the best loved products in our industry’s history. I find this fascinating because many people I run into seem to believe every nerd […]
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Give me a good reason 5

Posted 7 years ago

There are plenty of products worth owning but only a very few worth buying and even fewer worth switching. If you have something in your home that works you don’t have an itch to replace it – in fact, you probably never think about it because it works. When the opposite is true you’re on […]
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Narrowing down the choices 5

Posted 7 years ago

If I walk into a restaurant and open the menu to be faced with 100 different choices: Italian, American, a little bit of this and a little bit of that I have learned it’s time to run and find another. In my experience the more choices on a menu the more mediocre the food will […]
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So sorry, we have no bananas 4

Posted 7 years ago

My little riff on power amplifiers and how I could tell I had a winner really sparked off a lot of comments and questions of where to buy or when it’s going to be available. One of you even scolded me about being a tease without offering anything in return. Let me just suggest my […]
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Slap in the face 8

Posted 7 years ago

Yesterday I wrote about a new power amp technology that simply blew my skirt up to the point where I have cleansed the listening room of anything but this product to amplify the Maggies. The decision to consider doing this took about 10 seconds: I knew immediately this was it. I then spent nearly a […]
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Shaking your world 4

Posted 7 years ago

Not often I run into something that simply shakes up my world and when that happens it’s hard for me to not stop everything we’re doing and shout it out loud. Thank goodness for this little blog – I can shout without disrupting PS Engineering. Case in point the new power amp we have been […]
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The best 0

Posted 7 years ago

After yesterday’s post about hearing the worst performance of a high-end system in a long time I would like to share with you the best which I encountered in the very same day here in Japan. We travelled far outside the city of Tokyo to visit a dealer with a showroom and listening/viewing environment in […]
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The worst 4

Posted 7 years ago

I am visiting the high-end show in Tokyo at the moment and last night, between demonstrations of the system, I was wandering the halls of the show when the strains of one of my all time favorite operas came drifting down the hall. La Boheme, as performed by Renata Tebaldi in 1951 on a classic […]
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Why I design with solid state exclusively 3

Posted 7 years ago

It may sound funny, the headline of this post. I love the sound of tubes, have owned tons of tube equipment and yet – I have never designed a tube piece ever. And add to that mystery the fact that when I design a piece of equipment I design for myself. I don’t ever design […]
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A bias right in the middle 2

Posted 7 years ago

How boring if you’re biased right in the middle eh? You don’t lean to the left or the right, you’re just middle of the road for everything – as if you don’t actually have an opinion. Well, in audio amplifier designs that’s exactly what you want – a totally neutral middle-of-the-road stance when it comes […]
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Best of both worlds 2

Posted 7 years ago

If you’ve managed to wade through this series of posts on tubes vs. transistors you’d know that while there are indeed fundamental differences between tubes and transistors that by themselves have a major impact on the sound of equipment using them, there is no single device that really does it all with perfect musicality and […]
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Odd or even? 3

Posted 7 years ago

No doubt you’ve heard terms like class A, push pull, , SET, full complimentary, single ended etc. These terms all refer to how we use an amplification device rather than the amplification device itself(like a tube or transistor). Many of us have also heard that tubes produce a warmer sound due to the fact they […]
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Solid state vs. fields 4

Posted 7 years ago

This post will most likely stand the hair up on the back of EE necks because it’ll be riddled with inaccuracies I will use to make a point about why devices sound differently in audio circuits. What I have to share hopefully will be interesting to both the uninformed as well as those knowledgable in […]
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High voltage and linearity 9

Posted 7 years ago

In yesterday’s post we covered the fundamental differences between tubes and transistors and one of those we’re interested in is linearity. Tubes and transistors are only partially linear devices – which means they will not always faithfully reproduce a larger version of the input signal on their outputs. In our example yesterday we placed a […]
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