Open-air amphitheaters are one of the most characteristic manifestations of Ancient Greek architecture. From an architectural renovation perspective, the legal framework results in minimal re-constructions of archaeological sites emphasizing on minimum interventions and low footprint impact. Contrary to the established treaty, this document addresses the rehabilitation of the selected site based on the use of the sound sketch software Esquis’Sons (Marchal, 2015) that allows you to sketch and hear sound scenes generated from a 3D digital model. By making a study based on in-situ recordings and using them in the sound sketch tool, one virtually builds a sound environment “in the making.” Multiple sound scenarios are then tested and used as feedback for spatial decision making.