Aspectos críticos del diseño de convertidores A/D y D/A y relojes maestros en audio de alta gama

Igor Levin
A continuación una entrevista con Igor Levin publicada por Audio Times en 2012. Igor responde a preguntas sobre algunos aspectos críticos del diseño de convertidores A/D y D/A y relojes maestros.
 
Independientemente de la frecuencia de muestreo, ¿cuáles son realmente los elementos importantes en el diseño exitoso de convertidores A/D y D/A?
Hace unos 20 años cuando monté mi primer convertidor D/A también tuve que crear un reloj para él. Por entonces, los relojes no eran algo que pudieras salir y comprar. Así que construí mi primer reloj para mi primer convertidor D/A. A la gente le gustó el convertidor, pero lo que realmente apreciaron fue el reloj. Fue entonces cuando me di cuenta de la importancia de una sincronización de referencia estable para el audio digital.
 
Aún sigo creyendo que una sincronización precisa es la base para una conversión correcta. De hecho según mejoran los chips y los circuitos que luchamos por superar decrecen, la importancia de una buena sincronización ha aflorado como nunca antes. Hoy diría que conlleva al menos el 75% del total del sonido. Por supuesto hay una lista de otros factores importantes como un diseño adecuado, fuente de corriente estable, control de volumen basado en analógico, etc.

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HIGH END Munich 2012: World premiere of Antelope’s Rubicon at the EU-wide most successful trade fair for hi-fi consumer electronics

Antelope Audio's Rubicon world premiere at High End show 2012May 03-06, 2012 – Munich, Germany: The entire range of high-tech products could be found under a single roof including warmly glowing tubes, stylish turntables and multichannel audio streaming. With over 360 exibitors, 14.600,00 visitors and more than 480 journalists, the HIGH END Munich was a remarkable proof for the enhanced interest in audiophile technologies. Among all those hifi gear, our innovative Rubicon Atomic AD/DA Preamp attracted a high amount of visitors and international journalists at our booth. While on the one side the outstanding design was vividly discussed, on the other side the integrated Rubidium Atomic Clock led to many talks about AD/DA conversion and high resolution audio content with our staff, including mastermind Igor Levin.
 
No wonder, why he was the first of four speakers at the HIGH END lecture “High-resolution: The future of digital audio”. Followed by mastering engineer Morten Lindberg, highres audio distribution CEO Lothar Kerestedjan and CEO Daniela Manger from Manger Audio, the lecture made clear, that 384 kHz audiofile content is not a theoretical marketing issue, but a huge benefit to experience music.
 
Btw: Special thanks to the munich people, that allowed our staff to taste the wonderful german bear and food variations and led them listen to original bavarian tunes. :)

Antelope Audio presenta Rubicon, el primer preamplificador AD/DA atómico

Antelope Audio Rubicon Atomic AD/DA PreampRubicon es un convertidor de 384 kHz, preamplificador de etapa de phono y amplificador de auriculares con un reloj atómico integrado.
 
Santa Mónica, California, 19 de abril de 2012 – Antelope Audio introducirá Rubicon, un innovador preamplificador de audio digital a 384 kHz que integra el reloj atómico mundialmente conocido 10M Rubidium. Rubicon satisface el constantemente creciente interés por el audio de alta definición, dirigiéndose a las necesidades específicas de los mayores de la electrónica de consumo de una reproducción precisa y detallada del sonido de estudio tanto en grabaciones analógicas como digitales. El nuevo aparato será presentado al público durante el High End Show de Munich, del 3 al 6 de Mayo.
 
Rubicon es el primer DAC que integra un reloj atómico de Rubidio, que es 100.000 veces más estable que un oscilador de cristal tradicional. Conjuntamente con la tecnología de Antelope de Reloj Acústicamente Enfocado de 64 bit, el reloj de Rubidio logra un gran avance en la gestión del jitter (fluctuación), mejorando la calidad del sonido de una forma sin precedentes. La misma tecnología se aplica en los relojes maestros emblemáticos de la marca, utilizados para conseguir éxitos de taquilla como Avatar y que están disponibles en los mejores estudios de grabación y masterización de todo el mundo.
 
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Musikmesse Frankfurt 2012 – Our Take on the Industry’s Most Exciting Event

Musikmesse in Frankfurt is the biggest event of its kind in the music industry and one of the most exciting. It was especially exciting for our new Antelope Audio team members about to visit it for the first time.
 
The city welcomed us on Monday with a pleasant, mild climate and clear skies. We took it as a positive sign for a successful show in the upcoming week. Having checked into the hotel, we headed for the van rental company, then straight on to Ikea to buy the furniture for our stand. (Looking around the Messe in the next few days proved that we weren’t the only ones that had this idea.)

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What is the advantage of the volume control design in Zodiac DACs?

This is the next of the series of video-posts in which Igor Levin talks about Antelope Audio technologies.
 
It is time to discuss Antelope’s D/A converters (DACs) and in particular the design of the volume control.
 
In this post Igor talks about the specifics of the volume control within Zodiac DACs and explains why Antelope implements it in the analog part and not in the digital. The result is a much more accurate stereo placement of the audio especially in the lower listening volumes.
 
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Classical Audiophile Label 2L Relies on Zodiac Gold DAC to “Proof Listen” its High Resolution Masters

12-Time GRAMMY Nominee Morten Lindberg Specializes in Capturing Essence of the Performance in Various Norwegian Concert Halls, Cathedrals and Churches
 
Oslo, Norway, February 28, 2012 — Morten Lindberg is well-known in the audiophile community as head of 2L (Lindberg Lyd), a recording label based in Oslo, Norway that has been exporting its premium classical and folk recordings from Scandinavia for over a decade. Lindberg, who insists on extremely high quality production values throughout the entire recording, manufacturing and packaging processes, uses the Antelope Audio Zodiac Gold to ‘proof’ the carefully recorded 352.8 kHz/24-bit stereo master files before they are ever duplicated or distributed to the company’s discriminating international customers.
 
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Highend Massen Stockholm – More Than Just Hi-Fi

Although it was a cold weekend in Stockholm, the reception from the organizers, Life Consulting Ab was anything but chilly. In only their second year of running the show, the team headed By Robert Grubstad and Likki Luukinen made an excellent impression on all attendees. The team they had assembled was incredibly helpful, knowledgeable and fun.
 
Those music lovers who didn’t attend the show would do well not to miss out next time around.
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Antelope’s Zodiac DACs with iPad Control Bring Extra Level of Convenience to Audiophiles and Music Lovers

Listeners Can Now Enjoy Up To 384 kHz High-Resolution Audio Files, Played from Their iPads

Santa Monica, February 14, 2012 — Antelope Audio’s Zodiac D/A converters are now compatible with iPad, allowing music lovers to enjoy pristine audio of up to 384 kHz, played and controlled from their iPad through the Zodiac DAC.

It is easy to connect and operate. Simply plug an Apple® Camera Connection Kit jack into the iPad and then plug in a USB cable to the Zodiac DAC – that’s it. The devices are connected. Then swiftly tap the Music App on the iPad and play the track.

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New York City’s Masterdisk Counts on Antelope’s Trinity/10M Combination for its Image Stability and Sonic Integrity

World Renowned Mastering Facility Has Also Installed Several Zodiac DACs at Listening Stations to Maximize its Quality Control

 

New York, January 30, 2012Masterdisk, one of New York City’s foremost mastering facilities, has installed several of Antelope Audio’s Isochrone Trinity Master Clock and 10M Rubidium Atomic Clock units in its mastering suites, to maintain stereo imaging and the overall sonic integrity of projects passing through its studios. Masterdisk is installing multiple Antelope Audio Zodiac D/A converters at listening stations throughout the facility for quality control purposes.

 

According to owner Scott Hull, Masterdisk’s mastering suites were constructed with very high quality acoustics and solid grounding, and were already well clocked —therefore they did not appear to be candidates for improvement. “If it’s not broken, don’t fix it,” he says. Yet, the Antelope 10M — which incorporates a reference generator that is 100,000 times more accurate than the quartz oscillators in most equipment — and the Trinity, which offers 64-bit DSP and up to 384 kHz audio streaming, have had a noticeable impact on performance clocking the digital audio converters in the rooms.

 

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Pony Canyon, The Leader in Japanese Music and Film Industry, Meets Antelope Audio

Woong San, Korea's No.1 Jazz Vocalist

Tokyo, January 26th, 2012 – Pony Canyon Inc., a major leader in the Japanese music, film, anime and games industry, jointly produced a special seminar/liveshow/wine-tasting with Antelope Audio’s Japan Office. Held at Pony Canyon’s HQ, more than 150 guests including engineers, producers, artists and audiophiles attended the three-hour event – a showcase of vocal/piano talent, Antelope equipment and fine wine.

 

The audience were thrilled by Korea’s No.1 Jazz vocalist, the beautiful Woong San, and subsequent panel-discussion on “the making of” her new CD in which Antelope Audio’s masterclocks played an intrinsic role. The evening also featured an extensive presentation on the power of clocking, as told by Pony Canyon’s award-winning jazz/classical engineer Yoshihiko Kawasaki.

 
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