"When you think, that you are proudly presenting a rosin to a George Enescu Philharmony...but it turns out that the Concertmaster is using the very same rosin. So I warmly recommend to everyone, the A&O bio, organic, fantastic rosin, by István Balázs. Use the rosin and listen to the difference!"

"The Alfa & Omega Rosin is clearly a very good rosin. It is definitely of the highest quality and standards, congratulations!"

"A&O Rosin - strictly for maximalists! I recommend this special rosin to all those who are desiring a 2.0 rosin experience: no dust or dirt, only an ideal connection between the bow and the strings. This artisanal rosin gives the best of this relationship, with uncompromising adhesion. A&O rosin optimises the tone of the instrument: it provides a bigger, clearer and warmer sound with an uncompromising grip power. A&O rosins are providing a clean sound without dust, in this aspect they are revolutionary."

"I warmly congratulate István Balázs, the dreamer and creator of the A&O Rosin family. As with all new innovations created in Hungary, we can now be proud of this product, I am sure that it will quickly spread in the world of musicians and, due to its handmade, unique nature, it will successfully compete with the other products of big companies. I found the rosin made for the viola really high-quality, despite its silkiness, it helps bring out the overtones from the bow. I wish that more and more musicians try and fall in love with this great product!"

"Using my Codabow Diamond GX paired with the rosin by Alfa & Omega GRANDE SALVEZZA - a good combination - intense grip yet warm tone."

"Quality. Tone. Adhesion. The way to music - A&O Rosins. My sincere congratulation for the new, excellent Hungarian product!"

"...the rosin... has the same important role in sound production as the quality of strings or bow hair. If the grip is adequate, it significantly helps the performer to create a sound with the least possible effort, which is limited only by his/her own creativity. Balázs István's A&O Rosin family has a wide spectrum, i.e. here everyone can find the type of rosin that best fits their instrument, string, bow, acoustic environment, and individuality. I recommend it with love!"​

"A&O Rosin is one of the great discoveries of recent years for me! A real gap-filler in the world of rosins! In addition to the perfect, precise sound start, the velvety sound remains and helps the overtone system of the instrument. It acts as a partner, not as an indispensable material. What is really unique about it, is that it does not become dusty after applying any amount of rosin, in fact, thanks to the oils in it, it specifically protects the hair, so it can even postpone the time of changing the bow hair. I can only recommend the entire product line! And let's not forget the humor: a dear friend and colleague of mine said that this is a rosin that it helps even the viola players' left-handed vibrato! 🙂 Congratulations to István Balázs!"

"From laser sharp focus to cashmere like gentleness this rosin is simply wonderful. I adore how it allows me to have a perfect contact at all times without any kind of harshness in the sound. By using it both on my violin and viola, I can feel the difference of the models and how they are perfectly adapted to suit the various strings tension and witness how it helps project and discover all of the different colours of each instrument. I am sincerely grateful to you! This is a fantastic product you’re bringing to life  and I am really proud to have the opportunity to discover and share the name of A&O Rosin on the concert stages."