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Blue Circle RPD-15 DC Offset Blocker


It's interesting, to wonder about the electricity that enters your home, and the overall effect it can have on your audio reproduction system. I think most people put it "out of sight out of mind," as they may feel there isn't anything they can do to improve upon it, but there is. Just like tap... Read More »


Symposium Acoustics Segue ISO Platform


  As an occasional contributor to this site, may I also mention that I "read" every issue of Positive-Feedback.com in more or less the same way I read the TAS and S'phile pulps. That is, not every word, but for the musings of certain personalities, and for others' commentary on topics, recordings, and equipment of... Read More »


Kubala-Sosna XPander Power Distributor - Neutrality and Coherency taken to the Next Level


Talking About Power Distributors (With a response by Jim Merod) Every time I'd get in a new power product, Joe Kubala would come over to check it out. And always, after assessing it, the same question lingered in the air: when—not if—would we see a Kubala-Sosna Power Distributor? During the five years it took to... Read More »


Audio Intelligent Vinyl Solutions' Premium One-Step Formula No. 6


"No man ever steps in the same river twice, for it's not the same river and he's not the same man." – Heraclitus That's how I feel about most things in life; I appreciate the subtle differences and I don't like to experience the exact same things over and over. While I certainly have my... Read More »


Codia Acoustic Design Stage 3000 Duo Audio Rack


My first experience with an audiophile rack was Grand Prix Audio's Monaco which blew my mind both in price and performance. Up until that point I knew that the material a component sat upon tended to alter its sonic signature to some degree and not always in a favorable manner. To my way of thinking... Read More »


Townshend Seismic Isolation Pods


Attack of the PODs! No they are not from Mars! They are from London: Designed, constructed, and shipped from London, England by the brilliant Max Townshend to American audiophiles like us, for the best replacement of the air filled bladder sinks of old. The PODs isolate your gear like it was suspended in outer space.... Read More »


From Clark Johnsen's Diaries: The Polarity Problem Redux, Then Redux Again


More than once this writer has been accused of having a single-track mind when it comes to talking audio. This view I must heartily confute: in fact he has three tracks. But the one that attracts attention foremost does concern polarity, also known as acoustic polarity, also under proper circumstances known as Absolute Polarity. On... Read More »


Symposium Acoustic Shelves Svelte and Segue Line of Platforms


The importance of resonance and vibration control in allowing a high end audio system to perform at its very best is beyond debate. There may some holdouts in the audiophile community, but there are more than a few credible studies on the effects of resonance on electronic equipment in critical applications. The aerospace, military, and... Read More »


Duelund Coherent Audio from Denmark: The Duelund-WRSE Project, Part 3: Duelund CAST Silver Capacitors and Duelund CAST Silver & Copper Autotransformers


The Duelund Coherent Audio/Tannoy Westminster Royal Special Edition Project article I wrote for Issue 70 of Positive Feedback was the most fun I've had writing about audio ever!  In that amazing project we took a 'no holds barred' approach to building ultra-high performance external crossovers for my Westminster Royal SE loudspeakers using the exotic, hand-crafted-in-Denmark, Duelund CAST capacitors, inductors,... Read More »


HiFi Supreme and Audio Horizons' "Platinum Reference More Than A Fuse" Fuses


It started with a dare. A good friend of mine has always been very respectful and complimentary of my current system. I have to give him much of the credit for getting the sound to reach the level of excellence that now exists. All our late night listening sessions and passionate if not heated discussions... Read More »


Akiko Audio Tuning Sticks - A Hard to Ignore Tweak


Over the past 30 years, I have learned to tread carefully when exploring the world of tweaks. Experience has taught me that, with thorough due diligence, you can find tweaks that offer a significant degree of improvement in the sound quality of your audio system and in many cases they are keenly priced and offer... Read More »


Impressions: Notes on the Minus K Technology 100BM-8


It has been a long while since I wrote about a vibration isolation platform. In fact, I would have to go back to the days of the Vibraplane Model 2210 passive platform's arrival here at Clark Johnsen's strong recommendation to find the last time that I did this. And that takes it back to the... Read More »


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