In the Belriner Ensemble, a new concept for room acoustics and immersive sound design was developed for the theater hall in “Haus 1” and the “Neues Haus”. A uniquely immersive sound design was implemented for the world-famous “Threepenny Opera” (directed by Barrie Kosky, musical director Adam Benzwi), which represents naturalness and speech intelligibility. This was developed by MMT for guest performances that are in great demand around the world. The immersive acoustic design based on d&b soundscape are verified and implemented throughout various venues. The orchestra pit was optimized in terms of sound propagation with the help of diffusing wall elements.