
Callens Audio Labs
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Born from a decade of making music, years of chasing speakers, and one master's thesis on room acoustics.
I've been producing music for over ten years and collecting, repairing, and selling loudspeakers since 2020. From Altec and TAD horns to Lowther full-range drivers, from ATC and Focal monitors to Klipsch and beyond - I've owned, measured, and listened to a lot of speakers in a lot of rooms.
I studied signal processing and acoustics at EPFL, and my master's thesis at Logitech focused on room acoustics. That engineering background shapes every recommendation and setup I do.
Today I run sessions in Lausanne where I produce music and host listening demos. When I discovered Dutch & Dutch, the combination of cardioid design, boundary coupling, and built-in room correction matched exactly what I value in real rooms.
Callens Audio Labs exists to bring that experience to the French-speaking part of Switzerland. I handle every demo, setup, and calibration personally - because the difference between a good speaker and a great-sounding room is always in the details.

Signal processing, acoustics, and audio engineering at one of the world's top-ranked technical universities.
Active music producer with a studio space in Lausanne. I listen critically every day - it's not just a hobby, it's how I use these speakers.
Years of buying, repairing, and selling loudspeakers - from vintage horns (Altec, TAD) and full-range drivers (Lowther) to modern monitors (ATC, Focal, Klipsch).
Fully comfortable with REW, DSP, acoustic measurement, speaker placement, and room interaction. Every setup is measured and optimized.
Every conversation starts with your music and your room. I listen to what you need before recommending anything.
I use professional measurement tools to optimize every installation. Your room is unique - the setup should be too.
I don't do hard sells or gear-of-the-month. The equipment we carry speaks for itself - literally.
I'm your local contact, not a transaction. Firmware updates, re-calibration, system changes - I'm here.
Demos happen by appointment in my studio space in Lausanne - a music production room where you can hear our speakers in a real, measured environment. Home demos are available across the Romandie region for qualified clients.