tweaks Archives - Positive Feedback

The Duelund-Corona 832A Project - Serendipity to Ecstasy!

Jeff Day — Mon, 13 Oct 2025 15:23:14 +0000

Greetings friends, I hope you are doing well. Today's feature article is about "The Duelund-Corona 832A Project" that Frederik Carøe (Duelund Coherent Audio) and I have collaborated on, but before I delve into the details of our project, let me give you a little background about Duelund Coherent Audio. Duelund Coherent Audio is located in Fredensborg,... Read More »

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SteinMusic Acoustic Disc - Correctly Tune an Entire Listening Room with just Six 2-inch Discs!

Robert H. Levi — Wed, 08 Oct 2025 23:23:08 +0000

Bob Levi: a moment. LAOC Gala Board Banquet, 2022 (Photograph and image processing by David W. Robinson) One of my pet peeves in listening room acoustic treatments is devices that not only enhance the sound quality, but also cause an irregularity to the musical reproduction at certain frequencies. I run across these items almost weekly... Read More »

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Node Audio SS-1 Cable Lifts

Marshall Nack — Thu, 11 Sep 2025 15:47:08 +0000

When the Support System One (SS-1) from Node Audio came to my attention, I was smitten by its elegant looks, intrigued by its intelligent design, and impressed by its very sensible list of materials. Welcome to SS-1, a modular component support eco-system that isolates equipment from its support, drains equipment vibrations, and focusses stray magnetic... Read More »

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The Premier of Two Extraordinary Audiophile Accessories by SteinMusic of Germany: the Schumann Generator S1 and the Inline Speaker Signature Silver

Robert H. Levi — Tue, 19 Aug 2025 00:55:09 +0000

Bob Levi, a portrait. (Photograph and image processing by David W. Robinson) I am delighted to have the first opportunity to experience the perfected Schumann Generator S1 and the Inline Speaker Signature Silver for the first time in America. They are both exquisitely finished products and enhance the listening experience in vastly different ways. From... Read More »

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Waters on the Hardware: The Gingko Audio Cloud System and Arch Loudspeaker Isolation Device

Dean Waters — Thu, 24 Jul 2025 00:40:13 +0000

The Maestro himself! (Portrait and image processing by David W. Robinson) My LP life When writing audio reviews, reviewers are often called on to describe things we readily hear that aren't always easily quantifiable. We use adjectives like 'open,' 'free,' 'effortless,' 'relaxed,' etc. The list goes on and on. Every once in a while, we... Read More »

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Audio Ramblings - Seasonings?! I Don't Need No Stinking Seasonings!

Editors at Positive Feedback — Thu, 01 May 2025 16:54:38 +0000

This article by Dave Clark originally ran in 2006, 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. Want to add some flavor or seasoning to your system. Spice it up a bit!... Read More »

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Coherence Systems Sorcer Apprentice and Vivid

Will Wright — Fri, 14 Mar 2025 16:42:08 +0000

I was passionate about music in my youth. I lived for Rock & Roll. I had a good voice and, like many young men in that era, I started learning guitar and piano. When it was time for me to head off to college I had some choices to make. Earn my living on music... Read More »

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New! HiFi-Tuning Diamond Fuses

Marshall Nack — Mon, 27 Jan 2025 20:42:06 +0000

Audiophiles spend thousands for a 39" (1 meter) power cord, only to follow it with an inch of conductor that costs around $3 at a local hardware store. That power cord may be highly rated, but current flow and sound quality will be constrained by the cheap fuse element at its tip. Surely, we can... Read More »

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The Synergistic Research Pink Fuse, Low Hanging Fruit That Just Might Jump Start Your System

Robert S. Youman — Mon, 02 Dec 2024 19:26:30 +0000

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 »

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Getting Top Performance From Your Digital Media: Shine Ola Optical Disc Cleaner, the Acoustic Revive RIO-5II Negative Ion Generator, and the Acoustic Revive RD-3 Disc Demagnetizer

Editors at Positive Feedback — Sun, 01 Sep 2024 15:14:54 +0000

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 »

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The Fuse Box, an Ice Box, and the Mixed Metal Arts - Further Rumination on the Swiss Digital Fuse Box

Bruce Kinch — Fri, 12 Jul 2024 22:00:02 +0000

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 »

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The Acoustic Revive Chronicles, Chapter 15: RTS-30 Turntable Mat, RHS-1 Headshell, RHR-21 Helmholtz Resonator, CS-3K Outlet Stabilizer, RCI-3HK Cable Lifts, and RGC-24K Ground Conditioner!

Jeff Day — Wed, 10 Jul 2024 18:31:57 +0000

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 »

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Adventures at the Far End of Reality

Editors at Positive Feedback — Wed, 01 May 2024 20:25:10 +0000

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 »

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Puron AC Power Conditioners, Now with Worldwide Distribution by HiFi House UK

Tom Gibbs — Sat, 03 Feb 2024 16:54:14 +0000

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 »

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IsoAcoustics Gaia I Footers

John Hoffman — Sat, 23 Sep 2023 16:30:15 +0000

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 »

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Waters on the Hardware: Brief Notes on the AudioQuest HDMI Noise-Stopper

Dean Waters — Fri, 01 Sep 2023 21:57:23 +0000

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 »

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Neurochrome Purifi 1ET400A / Hypex NC500 Input Buffer

Pete Davey — Mon, 17 Jul 2023 22:51:09 +0000

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 »

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Fono Acustica FAL-2 Cable Lift

Marshall Nack — Fri, 02 Jun 2023 16:16:14 +0000

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 »

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Origin Live Gravity Weight

Larry Cox — Tue, 23 May 2023 21:35:56 +0000

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 »

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The Carbide Audio Multi-Axis Vibration Isolator Footers Get It Right

Juan C. Ayllon — Sat, 20 May 2023 16:56:11 +0000

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 »

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Audio Ramblings and the Telos GNR 5.1 Plus+ Active Grounding Box

Dave Clark — Mon, 20 Feb 2023 21:42:01 +0000

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 »

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Confessions of a Setup Man Part 12: Failed Experiments

Frank Doris — Sat, 28 Jan 2023 22:51:32 +0000

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 »

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Audio Ramblings - the Coherence Systems ADD-POWR Symphony I/O

Dave Clark — Tue, 08 Nov 2022 21:04:16 +0000

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 »

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The Arya Labs RevOpod Damping Foot

Arnis Balgalvis — Fri, 14 Oct 2022 19:48:20 +0000

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 »

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Vibration Issues with Your Turntable? Try A/V RoomService Equipment Vibration Protectors

Juan C. Ayllon — Sat, 24 Sep 2022 15:41:23 +0000

Concerned about vibrations in your home negatively impacting your vinyl listening experience? If you're like me, you want to extract every bit of performance out of your high fidelity music system, and eliminating unnecessary noise and vibrations is one way to do that. In a previous system in a former home, I used A/V RoomService... Read More »

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