Firma Helle Willemstein is an Amsterdam-based audio post-production studio. Re-recording mixer Arno Willemstein and sound designer/editor Martijn Helle united in 2014 to build the ideal environment to explore and achieve the best sonic possibilities for your film, documentary or advertising project. We have the full range of sound design tech for editing, ADR/voice-over, customised field recordings, Foley, re-recording mix, mastering and deliveries. Two studios allow us to work on several projects simultaneously. The 5.1 Cinema Mixing Stage room is powered by a JBL Cinema Monitoring System – and has a home-cinema feel thanks to a comfy couch. The 5.1 sound design/editing room is powered by a Dynaudio Air Monitoring System – and has everything for dealing with all those tiny details. We work with you to bring your story to life – and give it balance.