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As in days of olde when men strode forth to slay dragons (or chase windmills), the modern-day audiophile is on a crusade. This villain appeared relatively recently, coincident with the world economy's tectonic shift to the Information Age. As many have observed, Radio Frequency Interference wasn't an issue for audiophiles circa 1970. Nowadays, it might... Read More »

The highlight bout begins with King Resolution dancing in his corner taunting Bishop Musicality across the ring, both egged on by PR guys with stakes in the outcome. The handicappers lay odds on the King. Why? Because resolution trumps all in the audiophile arena. These bouts occur regularly in my sound room. While I love... Read More »

Acoustic Revive is a Japanese company that was set up in 1997, run by Mr. Ken Ishiguro-san. It specializes in connectors and anti-vibration products, but also offers innovative devices, most often the brainchildren of the University of Tokyo. We are testing one of the company's products that filter ground interference—the RGC-24K. The artificial ground, or—as... Read More »

A fellow-traveler who delights in extracting the max from his gear relayed this narrative the other day. "When guys come over for a listen, they often comment they never heard XYZ gear sound this good. Why is that? I tell them it is the attention paid to the little things—like premium fuses, RFI noise stopper... Read More »

WORLD PREMIERE Acoustic revive is a Japanese company founded in 1997 and run by Mr. Ken Ishiguro-san. It specializes in connection cables and anti-vibration products, but offers also  innovative products, the ideas of which are most often sourced from the University of Tokyo. We test its products containing a mineral called Kiyoh-stone. The use of minerals... Read More »

David W. Robinson, a portrait in late August of 2021. (Photograph by John Robinson.) "We will serve no wine before its time." – Carlo Rossi It's time. I have a set of brief impressions about some of the audio gear that's made its way over here to Positive Feedback in 2021. The second year of... Read More »

Too good to keep a secret! Review By Rick Becker With this article, Positive Feedback continues its content-sharing relationship with Enjoy the Music where Rick Becker shares his thoughts on the NPS 1260 3D Enhancer Solution. Dr. David W. Robinson, Editor-in-Chief Rick Schultz assured me that letting the NPS 1260 settle in for at least six weeks would reveal... Read More »

Acoustic revive is a Japanese company founded in 1997 and run by Mr. Ken Ishiguro-san. It specializes in audio cables and anti-vibration accessories, but it also offers innovative products, the ideas of which are most often inspired by the University of Tokyo. We are testing one of the products used to correct room acoustics, the... Read More »

Acoustic revive is a Japanese company founded in 1997 and run by Mr. Ken Ishiguro-san. It specializes in audio cables and anti-vibration products, but it also offers innovative ones, the ideas of which most often come from the University of Tokyo. We are testing one of the products used to filter the AC supply voltage,... Read More »

Garbage in, garbage out—health-conscious individuals focused on nutrition will nod their heads knowingly. This same aphorism applies to high-end audio, where electrically-powered components draw their sustenance from AC power. Audiophiles often go to great lengths to optimize the power flow to their systems, employing dedicated lines, power conditioners, upgraded power cords, and upgraded fuses. Aftermarket... Read More »

I am sometimes ashamed of how little we know about audio, how little we understand about it. We fly to the Moon, we are getting ready to fly to Mars, we have quite good knowledge of how the universe is changing and what its structure is, we have found thousands of planets that are similar... Read More »

Vibrations. They occur in every aspect of the listening room environment, whether that room is dedicated to the listening experience, or just happens to be your living room—or any other room where your audio equipment resides, for that matter. The problem is—even when you think you've taken the greatest precautions to prevent spurious vibrations from... Read More »

Every once in a while you meet someone special in this industry. Jim Whithorne is that guy. Owner and proprietor of Butcher Block Acoustics (BBA), he has a wonderful back story including 40 plus years selling and distributing products in the Butcher Block industry. But, his real passion in life is music, and this connection... Read More »

As I stated in my Axpona 2019 show report, if you have not experienced one of Ted Denney's presentations on acoustics and specifically his demonstration of the Synergistic Research (SR) High Frequency Transducer (HFT) product line, you really need to include it on your bucket list. This year, the demonstration was probably my favorite at... Read More »

I've just gotten in and installed a really cool review unit from ADD Powr (which stands for Algorithm Digital Defined Power), the Sorcer X2, which employs high-tech digital technology to enhance and condition either the dedicated electrical line servicing your audio equipment stack, or perhaps even your entire electrical system. The design is from Bill... Read More »

This time we got for a review the anti-vibration feet of the German company Finite Elemente, Ceraball and Cerabase Classic models. This brand is one of the precursors among specialized firms fighting against unwanted vibrations, which with these products returns to the market after a few years absence. We published an interview with the current... Read More »

The new 1.5-inch tall Critical Mass Systems CenterStage2 footer packaged with two different thickness of shims, provided to assure the best possible contact. I've honestly no idea why I was so surprised to hear from Critical Mass Systems' Joe Lavrencik this past July asking if I'd like to audition the "new" CMS CenterStage2 footers. He... Read More »

After I had such a positive experience with the Gingko ARCHs vibration control devices, Vinh Vu of Gingko asked me if I'd like to listen to the latest addition to the ARCH line, the ARCH Platform. It took me about a millisecond to say "yes, please." The ARCH Platform is an attractive, low-maintenance vibration control... Read More »

When this review offer came from Norman Varney's company, AV RoomService, Ltd., I knew Norman from the Facebook experience, and I knew that he worked with custom audio installations that appeared to me to be fairly high-end. He seemed to me to be a really nice, knowledgeable guy, and I enjoyed seeing photos of some... Read More »