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Acoustic Revive is a Japanese company founded in 1997 and led by Mr. Ken Ishiguro. It specializes in interconnect cables, anti-vibration products, but also offers innovative products with the University of Tokyo usually behind the ideas. We are testing a USB cable made of Triple-C copper and a USB filter with material doped with kiyoh-stone... Read More »

Backstory By accident, I recently blew a fuse in a Synergistic Research Galileo SX Ground Block. I won’t get into all the details, but let’s just say that my own human error was very much the problem. At that point in time, the original Synergistic Research Orange fuse was still being utilized in the Ground... Read More »

This article by Jeff Day originally ran in Positive Feedback ISSUE 45 September/October 2009, so while we call this section "New Old Stock - Articles from Our Days in Print" you are also going to see some articles from our early days of going online.  It's common knowledge that cleaning vinyl records makes a big... Read More »

Back in February's Issue 132 (HERE) I wrote about the remarkable improvement in my system from replacing a couple pricey audiophile fuses with first one, and then two Swiss Digital Fuse Boxes. At that time there remained a couple of unresolved issues—first was the impending arrival of a rhodium-plated tellurium copper "Super-Duper-Sluggo" (the actual metal... Read More »

Greetings friends, and welcome to Chapter 15 of the Acoustic Revive Chronicles! You can see a list of the previous chapters of the Acoustic Revive Chronicles in the archives HERE. In Chapter 15 of the Acoustic Revive Chronicles I'll be telling you about the new RTS-30 turntable mat, RHS-1 headshell, RHR-21 Helmholtz resonator, and the... Read More »

This article by Roger S. Gordon originally ran in Issue 8, August/September 2003, so while we call this section "New Old Stock - Articles from Our Days in Print" you are also going to see some articles from our early days of going online. Random surfing on the Web can produce interesting results. It was... Read More »

There are two recent observations I've made in high-end audio: 1) There are plenty of relatively inexpensive devices that can add significantly to your enjoyment of music and video playback, even if those devices might appear to be incapable of making a difference. Also, 2) The number of "audio enthusiasts" who dismiss the perceived benefits... Read More »

Premier Divine Acoustics is a Polish specialized company, founded in 2003 by Piotr Galkowski. It’s core business are loudspeakers, but the lineup also includes an anti-vibration platform, anti-vibration feet and loudspeaker cables. Divine Acoustics products are in-house developments, significantly different from other products of those kinds available on the market. We are Premier testing its... Read More »

Advanced Audio in Tacoma, Washington was the first high end audio shop I ever walked into. There I was introduced to the Linn LP 12 turntable, Vandersteen speakers, Meitner amplification, and several other iconic pieces. One day the shop owner had a pair of Martin Logan CLS speakers set up in the main listening room,... Read More »

Dean Waters at PAF 2023 (photograph and image processing by David W. Robinson) Here's a neat little product that aims to solve not one, but two challenges we face in our setups. The HDMI Noise-Stopper plugs from AudioQuest are metallic 'blanks' that are designed to fit over any unused HDMI ports. The primary objective here... Read More »

Hi Folks! Not in your typical fashion here but I have a quick review based on a module meant for the DIY folks. See, I've been on a journey to build my own amplifiers using *gasp* Class D modules readily available from a few different sources. I've built ICE-based amplifiers, some nondescript "chip amps" (which... Read More »

Kryna Inc. was established on 21st May 1980 in the city of Machida-shi, which is part of Tokyo Metropolis. Its CEO is Mr. Ryoka Ina who employs only five people. The company offers both cables and vibration reducing products. We are testing an untypical product, the Helca 1 and Helca 2, RFI/EMI and vibration filters,... Read More »

There's no getting around it, cable lifts are controversial. With so many competing designs and theories all claiming to remediate the same issues—mechanical vibrations, interactions between wires, and RFI/EMI contamination—sorting them out can make your head spin. One company says the best RFI solution is lifting the cable with a minimum of mass, coming close... Read More »

Image courtesy of Origin Live Audiophiles include people from a smattering of all spectra on the human scale, from the rigorously scientific—show me the data—to those who rely simply on their own experience, and those who take in others' opinions as their own. I'm largely in the second category but occasionally find myself in the... Read More »

I am convinced that, as a species, we are hardwired to respond with awe at sheer displays of power, largesse, and the overwrought, and I was reminded of that again when I arrived home to a UPS delivery of 12 Carbide Audio Multi-Axis Vibration Isolator Footers totaling 60-plus pounds enclosed in a 2' x 1'... Read More »

Telos has been around for quite some time. I reviewed their active grounding unit in 2016 after hearing it being demoed ion the Positive Feedback Hospitality room at THE SHOW.  Impressed by what it did to the music being played, I ended up buying the demo unit and we have been living happily ever after.... Read More »

Re-published from Copper magazine, Issue 133, and used by permission of PS Audio. Many audiophiles are tinkerers. We're constantly striving to squeeze the last iota of performance out of our audio systems, or we just like to putz with stuff, or we're obsessive-compulsive. Tinkering often involves experimentation. And (cue evil horror movie laugh), the experiments... Read More »

So, let me pick up where I left off in my last Audio Ramblings… As I had mentioned in the review of the Infigo cable, we have here the rather expensive switch and Ethernet cables from Ansuz, two items from Synergistic Research (the Black Box and the FEQ Carbon), and the Coherence Systems ADD-POWR Symphony... Read More »

Audiophiles are a compulsive bunch. They will try just about anything and everything when it comes to improving the sound of their systems. One very common recourse for mitigating this affliction is tweaking. Tweaking is a repetitive, at times even incessant activity where fine mechanical or electronic adjustments are made in attempts to achieve a... Read More »