“The sound performance of the DUO has amazed us - an unforgettable experience. The sound image is like virtual reality , making the speakers to totally disappear. The sound stage has realistic dimensions, unlimited depth, life like height, accurate positions of each instrument, musicians and singers in the music scene. The listener does not only hear music, but is living, feeling and seeing the music exactly as it was performed.” (HITECH, T. Katsenis, GREECE)
» Continuer THE DUO HAS AMAZED US. AN UNFORGETTABLE EXPERIENCE
“With the DUO OMEGA the pins and needles come at once. Especially timbals and trumpets have the weight and authencity of the real thing. What is truly decisive? We believe its the incredible speed of the ultra-sensitive horns. This way even fine details of the recording have no chance to escape. One thing is for sure: where other speakers at the most reproduce hot air, the DUO OMEGA excels with drive, impact and structure. It´s worth every penny.” (HIFI TUNES, U. Heckers, GERMANY) 
“The DUO is simply the finest horn loudspeaker we have ever heard, and we’ve heard plenty of them over the years. Amazingly, it isn’t even their top-of-the-line model. It is the first horn loudspeaker I’ve heard that doesn’t have horn colorations. The dynamic gradations are state of the art. It’s sense of immediacy and transparency are amazing. It’s simply “alive” sounding. We tried to find its “fatal flaw”- but we failed!” (HIGH END AUDIO, A. Salvatore, CANADA)
“The DUO GROSSO showed its awesome musical authority. This said, I feel that the Avantgarde system has a sonic signature, not intrinsically organic, but delightfully musical, the sonic signature signed by an artist who understands tonal harmony. The Avantgarde system can be considered art — audio art, which transcends technological wonders and offers some of the best entertainment I’ve run across in years.“ (INNER EAR, E. Fisher, CANADA) 
“For the amplifier on duty, the 18-ohm impedance of the DUO OMEGA appears to remove the load altogether. Combine that with its extreme high sensitivity and the amplifier might think it’s just idling while creating the most beautiful music for us. We now have more real music in the house which is effortless transmitted and completely free of constraints from the loudspeakers. The difference between the DUO and the DUO OMEGA is more then a small improvement. It is a major step towards TRIO Omega level.” (6MOONS, Dr. Henk & Dr. Marja, HOLLAND)