Who we are

a picture of the dualo team

Founded in 2011, in Paris, France, Dualo designs and manufactures a new generation of music instruments based on a new arrangement of notes which is original and patented, called the dualo principle. The purpose of Dualo is to revolutionize musical practice and to make it available to everyone. We are a team of passionate people dedicated to musicians and people who want to become musicians.


Jules Hotrique
is a mathematician as well as a musician who is deeply interested in musical harmony. After studying harmonics forms for two years, Jules made up a mathematical model allowing the representation of notes inside a geometrical space. He calls this model the “dualo principle”.

In 2007 and 2008, he implemented this theory by making two prototypes of dualo keyboard. He got a patent in 2009 and since then the instrument has been presented to a number of amateur and professional musicians as well as financials institution and manufacturers. The prototype made in 2008 is regularly used in rehearsals, demonstrations and concerts.

In december 2009, following the advice of the Francilian innovation Centre and considering the enthusiasm aroused each time he gives a concert, Jules decides to develop this product and to associate with Bruno Verbrugghe, a friend of his and a member of Pavé Jazz association. Besides, he is an engineer specialized in electronical instruments making as well as in the interaction between sound and gesture and karaoke video games. This collaboration ended up by the creation of the Dualo Company in January 2011 and by the extension of the team.

Since its creation, the very first prototype of a dualo instrument has been presented to more than 1500 amateur or professional musicians as well as  numerous retailers, distributors, composers, researchers, teachers and instruments makers.

Considering this experience, Dualo has conceived a new generation of dualo instruments called “du-touch”. The dualo team brings together various talents having high level technical skills and love for music. Our ambition is to offer to amateur or professional musicians a new instrument characterized by its intuitive, evolutive and mobile possibilities. This instrument is the result of several decades of technological achievements allowing great virtuosity and important ways of expression.


If you are passionate, hardworking and want to take part to the amazing challenge of building new instruments, we would be happy to hear from you.
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