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Kudos and Pictures

From Holger Hoffmann-Riem

Dear Ralph,

I finally managed to install Ambio software and try it out on my stereo system. The difference between Ambio and Stereo is just unbelievable! The music becomes so much more alive. You really don't want to switch back to Stereo. A couple of months ago I bought a rather expensive DAC. With that new DAC, the music became considerably more emotional than without it. However, that effect was nothing compared to switching to Ambio! A few dollars (or Euro) for Ambio software is certainly much better value than buying expensive gear.

I made a couple of interesting observations. I could now hear details that were not available in Stereo. You really had this feeling of "being there", even with only 2 channels. I am sure that ambience channels would make this impression even stronger.

I don't think I have "golden ears". I have two different pairs of speakers. When I listen to them in Stereo mode, they don't sound that different. Comparing them in Ambio mode, however, the difference was much more pronounced! There was also a much greater difference between a reasonable speaker placement and a rather unsuitable speaker placement (next to my TV set).

Best wishes,


From William Leebens, Loudspeaker Manufacturers' Representative, Florida.

The Stereo reproduction-process that we know and sometimes love is fundamentally flawed. There�s simply no way conventional Stereo can recreate the panoramic spread of sound we hear in concert halls. The best we can hope for is a �they are here� experience, with a scale-model musicalensemble struggling to escape the speakers, to appear in your room. With Ambiophonics, YOU ARE THERE. With Ambiophonics, music has the breadth and depth of a live concert. You are taken to Carnegie Hall or Red Rocks, the sound framed by proscenium or cliff wall--not by two speakers spaced 60 degrees apart. Just as with a live performance, the music will not be ignored.

What is Ambiophonics? Ambiophonics is a process which eliminates the errors found in conventional recordings, allowing you to hear the music in its full scale for the first time. There are no bizarre effects as with processors which synthesize ambience: if you hear a 40-foot-wide piano through Ambiophonics, sorry, that�s how it was recorded. With good recordings, you�ll hear for the first time the true size of the orchestra, the hall, the chorus. Even solo recordings will allow you to hear the musician accuratelyplaced in the hall or studio, the sound dying away naturally. How can I hear Ambiophonics? Go to: http://www.ambiophonics.org/Ambiofiles.htm#Setup --download the files and burn them to a CD. Move your speakers closertogether than usual-- about 20 degrees apart-- then play the tracks through your sound system. You�ll hear the sound of real music in your room, anastonishingly palpable presence unlike any recording you�ve ever heard. That�s just a taste of things to come. Later this year, a DVD-V sampler, �Ambiophonics Evolution�, will become available. Then, TacT Audio will introduce their Ambiophonics 4.0 Processor, which will allow you to discover the hidden magic of your favorite recordings, and unleash the stunning sound of true Ambiophonic recordings in your own home. With Ambiophonics, YOU ARE THERE!


Members of NY RAVE experiencing Pan-Ambio surround sound at the Ambiophonics Institute.

John Marks in Stereophile following its HE2007 show wrote:"A special honorable mention goes to the noncommercial Ambiophonics demonstration room, where my organ and carillon level-setting snippet sounded eerily like the inside of the church it was recorded in, right down to the echo signature of the transept sidewalls. Huge Sound-Lab Majestic panel speakers coped effortlessly with the full gamut of organ tones; rack upon rack of TacT processing, room correction, and power amps crunched the numbers and put into practice Ambiophonics' nonprofit promoter Ralph Glasgal's dream of creating a stable surround experience."In other recent press - Attending HE2007, Robert Deutsch of Stereophile wrote in "Most exciting was Ralph Glasgal [above left with Boz Radomir of Tact Audio] and the Ambiophonics system. I was quite blown away with the huge soundstage, precision of imaging, and sheer ease of the sound."

CES, Las Vegas - The Audiophile Voice's Arnis Balgalvis said, "Ralph Glasgal's presentation was ear-opening. What he managed to accomplish from two very closely placed speakers was to create a very refined soundspace that extended way beyond the outside of these closely positioned speakers. I sat there astonished. Switched back to normal, the soundstage contracted into the two speakers with just about nothing in the way of soundstage width."

"The Most Realistic System I've ever heard."
Clark Johnsen, Positive Feedback

"I'm still incredulous"
Ken Kessler, Hi-Fi News & Record Reviews 9/98

Raves for Tact RCS-2.2XP with Ambiophonics DSP

In an open letter to stereophiles, Michael Graw of Luebeck, Germany, wrote: "I had the chance to listen to a TacT 2.2 XP with its [Ambiophonic] cross talk cancellation (XTC) function activated and must admit: It really works even in a normal stereo loudspeaker arrangement. The [Ambiophonic] XTC is the biggest improvement I could experience in my 35 years of optimization of my system and searching for a true high fidelity system."

Kudos from the Basque Country

poldus's Avatar 

I have tried Stephan Hotto´s RACE implementation and I am very impressed. Having crosstalk cancellation without a physical barrier before me is quite something. So far I can´t route the laptop´s cd player through the XTC software so I´m having to convert cd´s to wave files and load individual tracks one at a time. I still have to try analog to digital and back conversion of my beloved SACD´s. Quite inconvenient, but it certainly pays off nontheless.

There is no question to my ears this is miles ahead of the standard stereo triangle. Everybody should try it.

All recordings I have tried benefit from ambiophonics, but some are simply jaw-dropping. Penderecky´s Seven Gates of Jerusalem on the Naxos label and the classic (it´s the one in Kubrick´s Space Oddisey) 1968 recording of Ligety´s Requiem conducted byMichael Gielen are magical. I have been trying to gather information as to the microphone configurations employed but I drew a blank. There is something unique about them that is not present on most other recordings and it would be interesting to find out what that is. Anyone who knows what I´m talking about could contribute with a list of their recordings that do this for others to try.
I want to say thanks to Ralph Glasgal and others who are contributing to the Ambiophonics cause for this real and substantial leap in music reproduction.

Poldus, diy Audio Forum


Hi-fi is fun. Why else are we in it?

After hearing how Mr. Koo enthused over Mr. Chelvam's set-up, I decided to check it out. Ambiophonics did deliver a convincing portrayal of musical reality. This is not to be confused with live music but it certainly can thrill.  Impressive. I don't know whether you'll ever get used to it. You not only will amaze yourself, but will be musically rewarded. 

The ambiophonic player is in public domain. My suggestion is simply to audition it. Now I can relate to Koo's enthusiastic endorsement. Let me not forget to thank Mr. Chelvam also. 

Kong Seng Chee

Today I tried Ambiophonics with 4 speakers and normal CDs.  I used Adobe Audition in order to run two instances of the Ambiophonics plugin and routed them to the front and rear speaker pairs respectively.  It was absolutely fantastic!......

Albert-Georg Lang

Many thanks to STC for the warm hospitality, it was truly an evening which had me intimately embraced by virtue of the achievements of his Ambiophonics!  I couldn’t visualize the abilities of such a setup with speakers less than 2 feet apart, but true enough I have been convinced of being transported directly to the music venue be it a studio recording or live concert.  In very a quick manner, I may humbly opine that my stereophonics (as I have barely achieved) could churn out/reproduce imaging, sound staging, and even sound scape extension into the listening room to mislead me to feel that I have been transported to the music venue while Ambiophonics goes straight to have directly sent me to the music venue!!

Tikoo Today (not a native English speaker)

I have just had a listening session using the Ambiophonic iPad app from Hotto through some KRK VXT8 powered monitors.  Well Blow me down.  It’s like going from black and white TV to colour (UK spelling).  I listened to a variety of styles of music and there was definitely an enhancement in the listening experience.  The band 10CC sounded magnificent.  All in all I was blown away and shall be spreading the word.  Keep up the good work.

David Kane