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Yayuma Audio, a company whose sound processor we wrote about in the February issue of High Fidelity (No. 154), was created out of passion and on the basis of knowledge. These two elements are something normal in the audio industry, but not necessarily in a combination. There are a lot of enthusiasts, indeed—what would a hobby... Read More »

Ripping CDs is a job that's easy to put off.  "Honey, what's the plan for these CDs?" my wife says sweetly. I may be a little obtuse at times, but even I speak enough Spouse to know that what she really means is, "When are you going to get off your duff and do something... Read More »

This article, by Clark Johnsen, originally ran when Positive Feedback was in print - Volume 8, Issue 2, 1999 I. In The Beginning Was The Tone The amiable, estimable John Marks (or is that, inestimable?), before appearing on the cover of our previous issue, addressed in TAS #115 the vital topic of how to engage (or is that,... Read More »

The Bybee iQSE (photograph courtesy of Bybee Technologies) iQSE Disks or Quantum Signal Enhancers by the legendary Jack Bybee is quite a tweak at an affordable $150 per 4 inch x 2 inch disk. You can read a full report on these from Larry Cox in Positive Feedback. I found all new uses for these that I feel... Read More »

The Rogoz Audio website shows no less than 23 anti-vibration rack models and that doesn't include the latest series. Some of them are versions of the same model, a wider one or featuring more shelves, but still, it's a large number. Mr. Janusz Rogoz's company, since 2010, when it was founded, has gone a long... Read More »

The bad is a magical space Whispers screams and laughter There is room for happiness There is room for sin It's an island of pleasure A sea of loneliness It's a place of birth And a door to nothingness Olga Jackowska, Łóżko in: Maanam, Łóżko, Kamiling Co. | Pomaton EMI 852718, CD (1996) Let's replace... Read More »

Acoustic Revive was founded in Japan in 1997 by Mr. Ken Ishiguro, who is the design genius behind the innovative and ultra-quality Acoustic Revive products. Like many hi-fi enthusiasts, Ken-san's interest in audio arose through his love for music as a youngster. Ken-san told me, "I was listening to the Beatles when I was fourteen... Read More »

This article, by Bruce Kinch, originally ran when Positive Feedback was in print - Vol. 6, No. 5, 1997. An Introduction The name at the head of this article is probably unfamiliar, as this is my first contribution to Positive Feedback, so perhaps I should include a few words about myself. I started patching together audio... Read More »

This article, by Doug Blackburn, originally ran when Positive Feedback was in print - Vol. 6, No. 4, 1997. There is so much stuff going on here lately I'm beginning to think I could write a 1-man magazine. But that might not be as interesting as PF's Assembly of the Diverse so I'll compress my thoughts... Read More »

Jack Bybee's iQSE or internal Quantum Signal Enhancer (iQSE) differs from the AC Purifiers I wrote about last month. As you'd expect the signal from your component runs through the AC Purifiers. It is with some bother I note no signal passes through the iQSE, it neither plugs into anything nor does anything plug into... Read More »

Stein Music The Perfect Interface,  Pi Slip Stein Music's Pi Interface Sheet under your LP and prepare for sonic improvement most every time. Whether you have a mat or bare surface on your turntable, these superbly designed Japanese paper mats are a bell ringer for sure. Comes in two models:  the Signature White brings nuance... Read More »

A general rule, which I try to follow selecting audio products for my tests and when performing the test boils down to credibility. On the one hand, my own, ultimately, what I write will stay online "forever" and it attests in my favor or against me, and on the other hand it defines a company... Read More »

I have been enjoying quite a lot of audio adventures over the last year or so while doing audio projects where I experimented with various wire types, capacitors, inductors, and resistors in audio circuits. As a result, my knowledge, skills, and confidence related to developing, modifying, and optimizing audio circuits have been progressing to where... Read More »

The Critical Mass Systems QXK Mk. III Rack in Four-Shelf Configuration, photograph courtesy of Critical Mass Systems. The latest chapter in a story… Some designs and products that I review are from new companies. This is a very good thing; it shows that the world of fine audio remains vibrant, creative, and open to innovation.... Read More »

Stein Music's "The Perfect Interface" Carbon Signature Resonance Control mat in place on our EMT 948 turntable. Every now and then I receive a product whose benefits are so obvious, and whose design is so straightforward that there's no point in holding back or trying to write an extended essay. It isn't a complicated call,... Read More »

So yeah, I like to dabble in tweaks and stuff that might add that much more to our musical enjoyment. Something that gets us that such more from our music. I admit it, I am a junkie for such things. People who have visited here look at the system and comment about its complexity and... Read More »

Bybee filters. These things have been available for audio in various iterations for nearly twenty years, as far as I can tell. The filters are said to employ some of the technology used to reduce the noise floor of military submarines to improve sonar performance. I first read about these in the early 2000s, if... Read More »

Greetings from the underground, fellow music lovers and seekers after audio nirvana. As I may have conveyed in my last ruminations many, many moons ago, I am luxuriating in the aural glow of an extended series of incremental tweaks, which coming as they have, in drips and drabs, have brought me to the point where... Read More »

An issue or two back, I wrote enthusiastically about the grounding units from Entreq (HERE), and how these passive grounding boxes allowed me to hear way more into the music. Yeah, they work as advertised and for sure, they should be seen as a requisite addition to anyone who is serious about audio and their... Read More »