Audio Consulting


Audio Consulting Music System - You Tube Video



Audio Consulting was presented two Awards by Positive Feedback Magazine:

Meteor Autoformer Volume Control

Meteor AVC black

Silver Rock Toroidal
Phono Amplifier

Silver Rock Toroidal Phono

Award Meteor AVC Award Silver Rock Toroidal Phono

pf Positive Feedback - Writers' Choice Awards for 2014 - The Best of the Best!

"It is a clean sound, like only battery power provides; a pure sound, like only passives allow. 

With links to the past in its naturalism and aspects of contemporary in its dynamics and resolution—still, it bears little resemblance to modern digital. 

In fact, this type of reproduction only points out how artificial modern digital really is."
-  Marshall Nack, Positive Feedback  -
read more..

A Visit to Audio Consulting, Switzerland

 "Jürgen Saile at HIFISTATEMENT"


Serge Schmidlin and Autor Jürgen Saile

".. Immediately after the first few bars we could hear just how much potential this system has. I have just one word: amazing! This system plays with more dynamics than I have ever heard and I’ve heard quite a lot. But not only that - tonality, airiness, imaging, and the illusion that real musicians are playing in the room are all at their finest. Nonsense - at their very best! These properties are, of course, not only evident listening to the Qin, but on all subsequently played tracks – irregardless of whether playing a record or a CD - a stunning performance was delivered. Drums played on a hifi system usually sound like “feet that fell asleep.” Whoever does not want to believe this should take a seat right near my drummer. It sounds like a shooting gallery with impressive reality and that reality very close by. Of course, a big horn speaker system could also have its say."  JÜRGEN SAILE - HIFISTATEMENT ...more.

Switzerland's Gems - at Serge Schmidlin's place

"Chapeau to Serge Schmidlin and Audio Consulting of Switzerland for reaching such an high level of musical bliss... making it so easy to be appreciated and enjoyed.

Difficult things made easy is something which only happens to the best... the very best.
- Stefano Bertoncello's Blog - ".... more

Stereo Times' High End 2014 Munich Report

München 2014

Another demostration that proved to be worth the travel away from the MOC and NOT provide free shuttle service was the new Swiss-built Steinheim Reference loudspeaker. The venue was the hotel Kempinski located downtown Munich on Maximilianstrasse. The room also featured Audio Consulting of Switzerland's new Meteor Autoformer Passive preamp, Silverock phonostage and electronics from Nagra. All in all, it appeared the entire layout came out of Switzerland. I never really got the chance to sit and listen as I wanted due to time constraints and all the small talk surrounding the debut of these products. But I will admit, I'm a long time fan of Audio Consulting and think they've got my pick (alongside Audio Note) for what's sounds actually closest to pure and natural. And I do not think these guys were far from achieving that once again. My only wish was that I could have had a chance to sit in that sweet spot. Awesome!! -  Clement Perry - ." 

Stenheim, Nagra and Audio Consulting were exhibiting at the Kempinsiki Hotel 

During the Munich High End Show 2014, and together with Stenheim and Nagra, Audio Consulting was exhibiting this year at the Hotel Vier Jahreszeiten Kempinski.

Silver Rock Toroidal Phono Amplifier in an new chassis

 Test: Audio Consulting Silver Rock Meteor 

Hifi Statement

The Meteor AVC passive preamplifier was reviewed by Jürgen Saile at HIFISTATEMENT:

Silver Rock Meteor AVC 

For those who are not so familiar with the German language, Google Chrome offer simultanous translation. We plan however to have this article translated by a professional ASAP.


"Die beste passive Linestufe, die ich bisher gehört habe. Wenn ein Eingang ausreicht, kann sie einen Vorverstärker voll ersetzen. Sehr dynamische und mühelose Wiedergabe. Für Puristen. Mit dem nötigen Kleingeld. - JÜRGEN SAILE - HIFISTATEMENT"

Audio Consulting Meets Scaena

"CES 2014 - Stereophile - by Jason Victor Serinus"

"CES 2014 - Stereo Times - Staff Report"

"CES 2014 - Stereo Times - "Staff Report Part 2"

"CES 2014 - The Audio Beat - Paul Bolin"

The Silver Rock “Meteor” AVC

Meteor AVC Toroidal Transformer

The new "Meteor" inductive volume control really is a quantum leap in this technology:

Some time ago, one of our customers and Silver Rock enthusiast made an inquiry for a cost-no-object toroidal TVC. Moreover, the customer wanted to have the HF resonance set as high as possible, and thus a very wide bandwidth as well as less than 100 ohms DCR. After several trials, we decided to go for an toroidal autotransformer volume control device.
Mind you, even AVC do have HF resonance and it took us a few more prototypes to get there.
In the end, we came up with a device that is resonance free up to 2 MHz, where it slowly starts to attenuate the signal with a 6 dB slope.

To our knowledge, this is the first magnetic volume control device that uses toroidal magnetic cores. It takes two and a half days of hand labour (no machine in the process whatsoever) to produce such a coil.
This AVC was meant for the purist, and thus has only stereo input and stereo output.

More Info ...

ReMusic visits Audio Consulting


"In this sense, I can define Audio Consulting devices and systems designed by Serge Schmidlin as the most live, vivid and close to give back "the air" of the original sound event, through an audio reproduction, than I have ever had the lucky and the honour to listen to.

And the air, if you notice that, is the element into which the music spread." - by Giuseppe Castelli - ...more

Test: Audio Consulting Reference RCA 

Hifi Statement

RCA Caqbel

"Statement: Ich muss leider gestehen, mit dem RCA Reference spielt meine Anlage auf einem höheren Niveau. Ich hätte nicht gedacht, dass mit der CD eine derartige Fülle an Klangfarben und homogener Wiedergabe möglich ist."   - JÜRGEN SAILE HIFISTATEMENT - ...more


Audio Consulting MIPA 30 W Stereo Ampflifier

 MIPA Endstufe

Test: Audio Consulting MIPA 30 W Stereo Amplifier 

Hifi Statement

"Stereo Times most wanted components 2012 - Silver Rock phono preamplifier

Stereo TimesSilver Rock Phono

".... So far, with the Silver Rock in the system, it's been one of those "died and gone to heaven" type experiences. I can only imagine what the rest of his components would do. It's hard to believe folks that just starting out with battery-powered phono stage, could infuse this much magic into my own rig. Yes, and it's only the start! " - Stereo Times  -  ....more

Super Tweeter for the Rubanoide FamilyRubanoide Tweeter

We have tried to further improve the Rubanoide by using a super tweeter. This turned out to be much more difficult that we originally thought. We tried many Ribbon based designs as well as some compression drivers. They never really blended in with the fabulous Rubanoide.

Then we tried a new design that is a planar membrane based and features efficiency equal to the Rubanoide's. It totally blends in, and for the first time we noticed a tremendous improvement without any drawbacks ...more

Silver Solder - 10 % Ag

Silver Solder 10 % AG

We have been looking for high percentage silver containing silver solder for quite a while. All we could find was 4% silver and 96% tin. Higher silver percentages were also accompanied by copper and even gold.

We have clearly made the experience that the less there is metals the better the sound. Thus we have custom produced our own silver solder with 10% silver content and 90% tin and NO copper or gold ....more

Little Prince in person... at Serge Schmidlin's place

... also if "little" he's not... he's a giant, actually... and still a Prince of taste and kindness and bon vivre, a truly sincere, open-minded and both young and passionate, old-timey gentleman.

Since 2000, is still walking in awe on it, experimenting and building and learning and improving, trial & errors, illuministic and illuminated as he can be, a visionary unafraid of world, detractors and market sirens and dogmas, yet a scientist and not a voodoo wannabe!

What I heard yesterday represents the Zenith - my personal and maybe, to a broader/broadest/universal extent - of the detailing and "rightness" of reproduced sounds and music at home.

Nonetheless, Rubanoid's speakers with their Japanese coffee-colour handmade paper and gorgeous wood short horns simply disappeared and became the time and sound and air bubble where maestro Bailes performed his seldom heard lute music; the growling low notes and the music arrived straight at our hearts in a truly seldom heard way! ...more

Visiting dr. Serge Schmidlin's Audio Consulting AG from Switzerland

Test: Audio Consulting MIPA 30 W Stereo Amplifier 

Hifi Statement

MIPA Endstufe

"To me, some transistor equipment sometimes sounds too much like hifi and too little like music. This is totally my personal opinion that you, of course, may disagree with. Here, however, a piece of equipment is only successful if it can really make music. And nowhere is a tube to be found! Its sound reproduction is very clear, especially in the upper frequencies. But also an acoustic bass is reproduced with a lot of color and nuance. Particularly for a "grandma", bass sounds are not a black hole, a clear distinction between open and fretted strings must be heard. When connected to speakers with the right efficiency, reproduction on the MIPA is tremendously exciting and fast. The music gets very intense – reading the newspaper at the same time is not possible!" - JÜRGEN SAILE HIFISTATEMENT - ....more

A Chance Listen to Audio Consulting of Switzerland's all-battery Powered Components

Stereo Times, Key Kim 

R-evolution “Stealth” turntable

"Bilan / Luxe - été 2012"

Silver Wire with cotton isolation

 We offer this wire for the DIYer that wants to create his own speaker, line or digital cable.

Silver Wire Cotton



Audio Consulting comes back to a product we used to sell a lot 10 years ago:

The 600 Ohms LCR RIAA



New Dealer  - Algorythme / Audio-Consulting USA
The brand new address for Audio Consulting ready for use equipment.
Two speaker systems ready for demonstration in a 100 square metre room.
Analogue and digital front ends.

Budapest - from 28 to 31 August, 2011
LECTURE: Music therapy and high fidelity
Dr. SCHMIDLIN, Serge, Director of the Audio Consulting Institute, Switzerland,
expert of high fidelity and high end

Audio Consulting of Switzerland: A Day in the Life...

StereoTimes, Clement Perry

Clement Perry Stereo Times

A visit by Clement Perry, Stereo Times, to Audio Consulting

Video - Stereo Times visits Audio Consulting


Clement Perry (Stereo Times), Serge Schmidlin (Audio Consulting),  background new
R-evolution Stealth Turntable - the article will be published soon.

Clement Perry, Stereo Times:
"For starters, my first stop was Geneva, Switzerland a full day before flying to Munich. This trip was by way of an open invitation from Audio Consulting of Switzerland designer Serge Schmidlin (photos above). At the '09 High End show (here), I awarded his eclectic battery-powered electronics Best Sound. The sound, as I mentioned to anyone who'd listen, was indefatigable: totally devoid of any electronic haze and/or interference whatsoever. In addition to giving it Best Sound, Audio Consulting of Switzerland immediately became my new reference standard. In a world of insanely expensive gear I would view Schmidlin's wears as "reasonably obtainable" (I've heard far more expensive rigs, one belonging to the Frenchman Jean Yves Kerbret, whose setup sounded every bit as good but at one million dollars...I don't think so!). See my full report on this amazing system and my sonic impressions at the conclusion of my show report."

Stereo Times

New Turntable: R-evolution Minima

R-evolution Minima

New: Meteor MC Step Up Transformer
Meteor Step Up Transformer 


Audio Consulting is reseller of Koetsu Cartridges

KoeTsu Rosewood Signature

Rosewood Signature Platinum

Silver Rock Phono

Test LP 4/2010

"Serge Schmidlin has built a sensationally good phono preamp. This is a phono preamp with almost magical properties of sound. "


Article LP-Magazine 04/2010