Our mission

The company was founded 2007 in Z├╝rich, Switzerland by senior software engineer Rolf Eichenseher. We design and develop professional audio equipment which connects different worlds in the industry - always in close collaboration with our customers worldwide, to exactly meet their requirements. Our products are developed in Switzerland and manufactured by our long-term partner in Germany who is responsible for PCB and mechanical assembly, QA and logistics. This one-stop service approach, together with ISO9001 certification, ensures best quality and shortest lead times.

Our History

2017Launch of the SRC-64 Sample Rate Converter plug-in module
2016Launch of the MVR-64
2015First MVR-64 prototypes shown on the Prolight+Sound show in Frankfurt/Germany
2014Development done as full-time job to launch MVR-64 project
2013Bi-directional ADAT extender ADX-16 launched to fill the gap between ADX-8 and ADX-32
2012 Remote Gain Control modkit RGC-24A-M launched. This truly unique product allows you to add remote gain control to non-remotable preamps
2011 New version (ADX-32B/ADX-64B) with MIDI
2009 Multi-channel ADAT extender ADX-32A and ADX-64A introduced
2007Founding of Appsys ProAudio as part-time business and first product launch (ADX-8, still made today)

Our Team

Rolf Eichenseher
Design & Development
Martina Eichenseher
Marketing & Sales
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