BENCHMARK MEDIA: Howard Popeck speaks at length to people with interesting things to say: John Siau – Benchmark Media DACs

Originally published 2014 John … in the audiophile world Benchmark Media have entered quickly and built a terrific reputation from scratch. Very impressive. However from your perspective, how do you see the differences between studio buyers and audiophile end users? The short answer is that audiophiles talk more. Audiophiles are passionate about their love for […]

Read More

BENCHMARK: Audio application notes – Intersample Overs in CD Recordings

John Siau writes: We have frequently used Steely Dan’s Gaslighting Abbie from Two Against Nature in our listening tests. This is a spectacular CD recording with lots of dynamics and a low noise floor. Nevertheless, in a little over 5 minutes, this track has 559 intersample overs on the left track and 570 on the right track for a total […]

Read More

BENCHMARK: Audio application notes – Speaker Sensitivity and Amplifier Power

John Siau writes: Speaker sensitivity is a measure of how loud a speaker will play at a given input power or at a given input voltage. Sensitivity is normally measured with a 1 watt power input or a 2.83 Vrms voltage input. The acoustic output is normally measured in an anechoic space at a distance […]

Read More

BENCHMARK: Audio application notes – Interpreting THD Measurements – Think dB not Percent!

John Siau writes: Distortion measurements (THD, THD+N and IMD) are traditionally expressed in terms of percent. But what do 1%, 0.1%, 0.01% or 0.001% mean in terms of loudness or audibility? If you are like most people you just know that 0.001% is the best of the three numbers listed above. If you are a well-trained […]

Read More

BENCHMARK: Audio application notes – Laboratory Use of the Benchmark AHB2 Power Amplifier

John Siau writes: SEAS driver test system uses Benchmark AHB2 SEAS, a well-known manufacturer of high-quality loudspeakers, selected the Benchmark AHB2 as a key component for use in testing loudspeakers. They created an innovative test system that measures loudspeaker motor strength and moving mass with higher accuracy than previous methods. This new measurement system was […]

Read More

BENCHMARK: Audio application notes – Laboratory Use of the Benchmark AHB2 Power Amplifier

John Siau writes: SEAS driver test system uses Benchmark AHB2 SEAS, a well-known manufacturer of high-quality loudspeakers, selected the Benchmark AHB2 as a key component for use in testing loudspeakers. They created an innovative test system that measures loudspeaker motor strength and moving mass with higher accuracy than previous methods. This new measurement system was […]

Read More

BENCHMARK: Audio application notes – Relay-Controlled Volume – The Ultimate Solution for Analog Audio

John Siau writes: Benchmark has introduced the new HPA4 headphone/line amplifier with four 256-step relay-controlled attenuators and four 16-step relay-controlled boost amplifiers. Together these form two fully-independent, fully-balanced stereo volume controls. One volume control is dedicated to the line output and one is dedicated to the headphone output. Each has a +15 dB to -122 […]

Read More

BENCHMARK: Audio application notes – Balanced vs. Unbalanced Analog Interfaces

John Siau writes: If you look at the back of any Benchmark product, you will find balanced XLR analog-audio connectors. As a convenience, we also provide unbalanced RCA connectors on many of our products. In all cases, the balanced interfaces will provide better performance. We build our unbalanced interfaces to the same high standards as […]

Read More

SOLEDGE: Howard Popeck speaks at length to people with interesting things to say: Mr. Raphaël Bini, the driving force behind French audio maker Soledge High End Wireless Audio System.

Hello Raphaël. How did your interest in music reproduction start? Well, I suppose everything starts with music listening during as a youth, with a father playing music, either on a piano or guitar, or on his HiFi system. Then, my father being an electrician and repairing TV sets, meant that I grew up with electronic […]

Read More

Howard Popeck speaks at length to people with interesting things to say: Metaxas & Sons SOLITAIRE 2016 amplifier – Redefining what an amplifier can look like in Hi-End Audio

First published in early 2016 Howard Popeck: Hi Kostas. Unusual design, to say the least. What’s led to this? Kostas Metaxas: Hi Howard. After 40 years of creating audio equipment, the last thing that I wanted to produce was “another box with transistors on a heatsink”. I was dreaming of the most spectacular architecture, design […]

Read More

BENCHMARK: Audio application notes – Feed-Forward Error Correction

John Siau writes: The Benchmark AHB2 power amplifier and HPA4 headphone amplifier both feature feed-forward error correction. This correction system is an important subset of the patented THX-AAA™ (Achromatic Audio Amplifier) technology. It is one of the systems that keeps these Benchmark amplifiers virtually distortion free when driving heavy loads. It is also the reason […]

Read More

BENCHMARK: Audio application notes – Rules of Thumb for Music and Audio

John Siau writes: As an engineer I like to use “rules of thumb” to make quick estimates that help explain what can be expected from the physical world around me. These rules of thumb are easy-to-remember approximations that eliminate the need for complicated and needlessly precise calculations. If you learn a few key rules of […]

Read More

Howard Popeck speaks at length to people with interesting things to say: Mr. Dominique Mafrand, the driving force behind French audio maker l’enceintebleue

Hello Dominique. How did your interest in music reproduction start? It began when I was very young. One of my four brothers studied electronics at school and found a job in a French company called Ferisol manufacturing professional electronics equipment for the industry. It was back in 1960/1965. It was the beginning of pop music […]

Read More

Speaker Design Guru David Smith

Rahul Athalye (TNT-Audio ezine) writes: TNT-Audio caught up with noted speaker designer David Smith, ex-JBL, McIntosh, KEF, Snell, and PSB. Join TNT and Speaker Dave on a journey into the heart of speaker design, its history and current trends. Rahul Athalye (RA):Tell us about how you got started in the audio business. David Smith (DS): […]

Read More

HIROYASU KONDO: Founder of Audio Note Japan, and a legendary figure in his own time—took …..

Our interview with Hiroyasu Kondo—founder of Audio Note Japan, and a legendary figure in his own time—took place during HI-FI ’96 last June at the Waldorf=Astoria. It seemed very natural; the crowd at the Show was very internationalist. Herb Reichert of Audio Note New York found us a quiet corner after lunch, and we sat […]

Read More

Audiophile interview: Chris Connaker – computeraudiophile.com

Laurence A. Borden writes: LB: Chris, welcome to Dagogo. Please begin by telling us about your background, and what lead you to embrace computer-based audio and to start computeraudiophile.com. Chris Connaker: I have been an audiophile for as long as I can remember. In 1982, after talking my second grade teacher Mrs. Van de Weigh […]

Read More

The Single-Ended Amplifier: Cary’s Dennis Had

Robert Harley (Stereophile magazine) writes:  Cary Audio Design founder Dennis Had is largely responsible for popularizing single-ended amplifiers in America. Since appearing on the scene in 1989, Cary Audio Design has forged its own niche in the high-end audio industry. I spoke with Dennis Had about how he got started building amplifiers, and why he’s […]

Read More

KEF: Jack Oclee-Brown on Making Affordable Speakers

Back in the early summer of 2017, Jack Oclee-Brown, KEF’s Head of Acoustics, visited John Atkinson to set up the KEF Reference 5 loudspeakers in his listening room. JA’s review of the Ref 5 was published in October 2017, and during Jack’s visit JA talked to him about the design of that speaker. But they […]

Read More

BOWERS and WILKINS: Dr. John Dibb interview

David Lander writes: Before striding into the future, John Dibb enjoyed considerable exposure to his sceptered isle’s fascinating past. He was born in England’s North Country, in 1948, in a model West Yorkshire village established a century earlier by an enlightened industrialist determined to provide comfortable housing and communal amenities for his employees and their […]

Read More

Howard Popeck speaks at length to people with interesting things to say: Colin Wonfor (Inca Tech, Magnum, Proac-Magnum, T.O.C.A, Naim and Tellurium Q) sets the record straight (Part #2)

Hello again Colin. I guess you hold a couple of patents, possibly quite a few. in layman’s terms – if indeed such a thing is possible – can you explain what these are and perhaps their significance in the audiophile world? Crickey Howard, some of those got back a bit and now and are out […]

Read More

COLIN WONFOR: Discusses his MC-V power cord

Editorial note: Written by Alan Elsdon and Re-engineered by Colin Wonfor (above) Q: Looking at the EWA power cord – your MC-V – it doesn’t look anything special. But knowing you, there’s clever engineering that’s gone into it and so a few questions if I may. Let’s start by looking at the topic through the […]

Read More

SONUS FABER: Interview with Sonus Faber Livio Cucuzza

Mono & Stereo exclusive interview with Sonus Faber main designer Livio Cucuzza. An open view into his and company approach to design not only regarding Sonus Faber speakers, but also Audio Research and Waida. We looked into what is 21st century is going to bring for company and customers. How did all started for you at […]

Read More