In this lecture, the DFG Research Group Sound System Epistemologies (SSE) of the Institute of Musicology and Media Studies at Humboldt Universität zu Berlin presents its work. SSE is an interdisciplinary research group that studies the intersections of sonic performance, knowledge production, and masculinity. The six-year project, funded by the German Research Foundation (DFG), theorizes the sound system as a form of musical performance and thus develops a new musicological model. SSE explores types of popular music in which speaker towers, DJs, and the interaction of audiences play an important role. SSE focuses on kuduro and Afro house from Lisbon, FreeTek, and FLINTA-run sound systems from London. The research group, headed by musicologist Stefanie Alisch, is the first project in the field of sound system studies to be based in Germany and aims to transcend the false dichotomy of live music and recorded music. The project breaks new ground in research on masculinity research and enriches music research by documenting little-studied repertoires.