The Spanish guitar maker Rubén Moisés López was born in Madrid in 1967, and is the sixth son of the luthier Marcelino López Nieto, and the only one to follow his father into building guitars.

Since his father's workshop was in their home, Ruben Lopez began learning about tools, woods, and guitar making from the time he was five. However, it has only been since the late 1990s, that he decided to devote himself to the art. Although he shares his father's workshop, he builds under his own label.

He has also built other stringed instruments such as copies of historical viola de gambas, viols, etc. Ruben Moises Lopez faithfully follows the tradition of his father and teacher as a maker of handmade concert classical guitars.